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Consolidation And Break-up Of The South American Platform In Southeastern Brazil: Tectonothermal And Denudation Histories
No full textThe different tectonic stages that occurred at the end of the Proterozoic and during the Phanerozoic have an important bearing on the tectonothermal history of the South American Platform and its consolidation. Geochronological data (U/Pb monazite, 40Ar/39Ar whole rock) and apatite fission-track analysis, from Precambrian rocks of the southeastern Brazilian coastline, permit the modeling of a long-term thermal history of the crust and constrain variable denudation rates. Using these data, a temperature-time diagram reflects a period of accelerated exhumation during the end of the Brasiliano Orogeny, followed by long stability and reactivation of the platform during the Rifting Phase of the South Atlantic Ocean. U/Pb zircon and monazite (blocking temperature of ca. 650°C) data from a series of igneous bodies suggest that a tangential and transpressional tectonic regime occurred between 625 and 610 Ma. During the following escape tectonics, between 610 and 590 Ma the exhumation process indicates cooling rates of ca. 12°C/Ma. 40Ar/39Ar biotite ages between 540 and 510 Ma (ca. 300°C) and a corrected fission-track age on apatites (100°C) of 480 Ma indicate an exhumation event related to block tectonics with huge vertical displacement along shear zones. A long stabilization phase, with low exhumation, and cooling rate around 0.25°C/Ma was recorded from the Cambro/Ordovician to the Mesozoic. At 65 Ma an acceleration of the exhumation through denudation and reworking of the South American surface with cooling rate of 1.5°C/Ma is observed. The uplift of the Mantiqueira and Serra do Mar mountain ranges along the southeast Brazilian coastline works as a climatic barrier provoking lateral erosional processes causing long-term scarp retreat, combined with intense, but progressive denudation towards the continent. A denudation of 2.5 to 4 km was calculated for such processes. This lateral retreat of escarpments and flexural response can provide important insights regarding marginal isostatic uplift and the evolution of offshore sedimentary basins of southeast Brazil.7191101de Almeida, F.F.M., (1976) The System of Continental Rifts Bordering the Santos BasinAnais Da Academia Brasileira de Ciências, 48 (SUPPL.), pp. 13-26de Almeida, F.F.M., Carneiro, C.D.R., Origem e evolução da Serra do Mar (1998) Revista Brasileira de Geociências, 28, pp. 135-150Amaral, G., Born, H., Hadler, N.J.C., Iunes, P.J., Kawashita, K., Machado Jr., D.L., Oliveira, E.P., Tello Sáenz, C.A., Fission track analysis of apatites from Sāo Francisco craton and Mesozoic alcaline - Carbonatite complexes from central and southeastern Brazil (1997) J. S. Amer. Earth Sci., 10, pp. 285-294Bigazzi, G., Guedes, S., Hadler, N.J.C., Iunes, P.J., Odone, M., Osorio, A.M., Paulo, S.R., Zuniga, A., Potentialities and practical limitations of absolute neutron dosimetry using thin films of uranium and thorium applied to the fission track dating (1999) Radiation Meassurements, 31, pp. 651-656Bigazzi, G., Guedes, S., Hadler, N.J.C., Iunes, P.J., Paluo, S.R., Tello, S.C.A., Application of neutron dosymetry by natural uranium and thorium thin flims in fission tracks dating (2000) Book of Extended Abstracts of 9th International Conference on Fission Track Dating and Termocronology, pp. 33-35. , Lorne, AustraliaBurbank, D.W., Anderson, R.S., (2001) Tectonic Geomorphology, p. 274. , Blackwell SciColtrinari, L., (1974) Contribuiçāo à Geomorfologia Da Região Guaratinguetá - Aparecida, p. 156. , Doctoral Thesis, Universidade de Sāo Paulo (Instituto de Geografia), Sāo Paulo (SP)Dantas, E.L., Hackspacher, P.C., Fetter, A.H., Sato, K., Pimentel, M.M., Godoy, A.M., Nd isotope systematics related to Proterozoic evolution of the Central Ribeira Belt in the State of Sāo Paulo, SE Brazil (2000) Revista Brasileira de Geociências, 30, pp. 140-143Gallagher, K., Brown, R.W., Johnson, C.J., Geological applications of fission track analysis (1998) Ann. Rev. Earth Planet. Sci., 26, pp. 519-572Gilchrist, A.R., Summerfield, M.A., Differential denutation and flexural isostasy in formation of rifted - Margin upwarps (1990) Nature, 346, pp. 739-742Green, P.F., Duddy, I.R., Gleadow, A.J.W., Tingate, P.R., Laslett, G.M., Thermal annealing of fission tracks in apatite, 1. A qualitative description (1986) Chem. Geol. (Isotopic Geoscience Section), 59, pp. 237-253Green, P.F., Duddy, I.R., Laslett, G.M., Hegarty, K.A., Gleadow, A.J.W., Lovering, J.F., Thermal annealing of fission track in apatite 4: Qualitative modeling techniques and extension to geological timescales (1989) Chem. Geol. (Isotopic Geoscience Section), 79, pp. 155-162Guedes, S., Hackspacher, P.C., Hadler, N.J.C., Iunes, P.J., Paulo, S.R., Ribeiro, L.F.B., Tello, S.C.A., The Plio - Pleistocene period in the Mantiqueira Mountain Range, SP/MG - Brazil: Apatite fission tracks (AFTA) and tectonic significance (1999) Actas II South American Symposium on Isotope Geology, pp. 306-309. , Cordoba, ArgentinaGuedes, S., Hackspacher, P.C., Hadler, N., Iunes, J.C., Machado Jr., P.J., Paulo, S.R., Ribeiro, L.F.B., Tello, S.C.A., Thermal history by fission track analysis of Serra Negra, Salitre, Catalāo II and Tapira carbonatite complexes, Brazil: Methodological study (1999) Book of Abstracts 1st Latin America Symposium on Nuclear Tracks and Its Applications in Physics, Health, Enviromental Studies and Industry, p. 127. , Universidad Simon Bolivar - Caracas - VenezuelaGuedes, S., Hackspacher, P.C., Hadler, N.J.C., Iunes, P.J., Paulo, S.R., Ribeiro, L.F.B., Tello, S.C., Constraints on the Evolution and thermal history of the Continental Platform of Southeast Brazil, São Paulo State, using Fission Track Analyses (AFTA) (2000) Revista Brasileira de Geociências, 30, pp. 107-109Hackspacher, P.C., Godoy, A.M., Vertical displacement during late-collisional scape tectonics (Brasiliano Orogeny) in Ribeira Belt, Sāo Paulo State, Brazil (1999) J. Afri. Earth Sci., 29, pp. 25-32Hackspacher, P.C., Dantas, E.L., Spoladore, A., Fetter, A.H., Oliveira, M.A.F., Evidence for neoproterozoic backarc basin development in the Central Ribeira Belt, Southeastern Brazil: New geochronological and geochemical constraints from the Sāo Roque - Açungui Groups (2000) Revista Brasileira de Geociências, 30, pp. 110-114Hackspacher, P.C., Fetter, A.H., Dantas, E.L., Hadler Neto, J.C., Ribeiro, L.F.B., Tello Sáenz, C.A., Tectonothermal events of southeastern Brazil: Implications for consolidations of the South American platform (2001) South-American Symposium on Isotope Geology, 3, p. 43. , Pucón/Chile. AnaisHackspacher, P.C., Juliani, C., Fetter, A.H., Dantas, E.L., The evolution of the Central Ribeira Belt, Brazil: Implications for the assembly of west Gondwana (2001) Gondwana Res., 4, pp. 626-627Hackspacher, P.C., Fetter, A.H., Ebert, H.D., Valdecir, A., Janasi, V.A., Dantas, E.L., Oliveira, M.A.F., Braga, I., Magmatismo cálcio-alcalino a ca. 660-640 Ma no Domínio Socorro: Registros de convergência pré-colisional na aglutinaçāo do Gondwana Ocidental (2002) Revista Geologia (Universidade de Sāo Paulo), , in pressHadler, N.J.C., Iunes, P.J., Paluo, S.R., Tello Sáenz, C.A., The study of apatite fission tracks annealing: Experimental measurements of density and lenght in basal and randomly oriented faces (2000) Book of Extend Abstracts of the 9th International Conference on Fission Track Dating and Termochronology, pp. 143-145. , Lorne, AustraliaJanasi, V.A., (1999) Petrogênese de Granitos Crustais Na Nappe de Empurrão Socorro-Guaxupé (SP-MG): Uma Contribuição Da Geoquímica Elemental E Isotópica, p. 304. , Livre Docência Thesis, Universidade de Sāo Paulo. Sāo Paulo-SPJuliani, C., Hackspacher, P.C., Dantas, E.L., Fetter, A.H., The Mesoproterozoic Volcano-Sedimentary Serra do Itaberaba Group of the Central Ribeira Belt, Sāo Paulo State, Brazil: Implications for the age of the overlying Sāo Roque Group (2000) Revista Brasileira de Geociências, 30, pp. 82-86King, L.C., A geomorfologia do Brasil Oriental (1957) Revista Brasileira de Geografia, 18, pp. 147-265Krogh, T.E., A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations (1973) Geochim. Cosmochim. Acta, 37, pp. 485-494Laslett, G.M., Green, P.F., Duddy, I.R., Gleadow, A.J.W., Thermal annelaing of fission track in apatite 2: A quantitative analysis (1987) Chem. Geol. (Isotopic Geoscience Section), 65, pp. 1-3Light, M.P.R., Maslanyj, M.P., Banks, N.L., New geophysical evidence for extensional tectonics on the divergent margin offshore Namibia (1992) Magmatism and the Causes of Continental Break-up, 68, pp. 257-270. , Stiy, B.C., Alasbater, T. and Pankurst, R.J. (Eds.), Geol. Soc. Spec. PubLutz, T.M., Omar, G., Na inverse method of modeling thermal histories from apatite fission track data (1991) Earth Planet. Sci. Lett., 104, pp. 181-195Moore, M.A., England, P.C., On the inference of denutation rates from cooling ages of minerals (2001) Earth Planetary Sci. Lett., 185, pp. 265-284Nürnberg, D., Müller, R.D., The tectonic evolution of the South Atlantic from late Jurassic to present (1991) Tectonophys., 191, pp. 27-53Park, R.G., Jaroszewzki, W., Craton tectonics and seismicity (1994) Continental Deformation, pp. 200-222. , Hancock, P.L. (Ed.), Oxford: Pergamon PressRaab, M.J., (2001) The Geomorphic Response of the Passive Continental Margin of Northern Namibia to Gondwana Break - Up and Global Scale Tectonics, p. 253. , Doctoral Thesis, Universität zu Göttingen, GöttingenRenne, P.R., Deckart, K., Ernesto, M., Féraud, G., Piccirillo, E.M., Age of the Ponta Grossa dike swarm (Brazil), and implications to Paraná flood volcanism (1996) Earth Planet Sci. Lett., 144, pp. 199-211Ribeiro, L.F.B., (2002) Morfotectônica Da Região Centro Leste Do Estado de São Paulo E Adjacências De Minas Gerais: Termocronologia E Paleotensões, p. 195. , Phd. Thesis Universidade Estadual Paulista, Rio Claro - SPSchobbenhaus, C., Campos, D.A., Derze, G.R., Asmus, H.E., (1981) Mapa Geológico Do Brasil E Da área Oceânica Adjacente Incluindo Depósitos Minerais. 1: 2 500 000, , Departamento Nacional de Produção Mineral, BrasíliaStacey, J.S., Kramers, J.D., Approximation of terrestrial lead isotope evolution by a two-stage model (1975) Earth Planet. Sci. Lett., 26, pp. 207-221Stewart, K., Turner, S., Kelley, S., Hawkesworth, C., Kirstein, Mantovani, M., 3 - D 40Ar/39Ar geochronology in the Paraná continental flood basalt province (1996) Earth Planet. Sci. Lett., 143, pp. 95-109Stüwe, K., White, L., Brown, R., The influence of eroding topography on steady state isotherms.Applications to fission track analysis (1994) Earth Planet. Sci. Lett., 124, pp. 3-74Teixeira, W., Renne, P.R., Bossi, J., Campal, N., D'Agrella Filho, M.S., 40Ar/39Ar and Rb/ Sr geochronology of the Uruguayan dyke swarm, Rio de La Prata Craton, and implications for Proterozoic intraplate activity in western Gondwana (1999) Precambrian Res., 93, pp. 153-180Tello Sáenz, C.A., (1994) Termocronologia de Algumas Regiōes Brasileiras Através Da Análise De Traços De Fissāo Em Apatitas, p. 103. , Master Dissertation. Universidade de Campinas, Campinas- SPTello Sáenz, C.A., (1998) Estudo de Annealing de Traços de Fissão Em Apatitas, Tanto Em Seçōes Basais Quanto Em Seções Sem Orientaçāo Preferencial, Análise Dos Comprimentos Dos Traços De Fissāo, p. 111. , Doctoral Thesis, Universidade de Campinas, Campinas-SPTello Sáenz, C.A., Hackspacher, P.C., Hadler Neto, J.C., Iunes, P.J., Guedes, S., Ribeiro, L.F.B., Paulo, S.R., Recognition of Cretaceous, Paleocene and Neogene tectonic reactivation through apatite fission-track analysis in Precambriam areas of southeast Brazil: association with the opening of the south Atlantic Ocean (2002) J. South Amer. Earth Sci., 15, pp. 765-774Töpfner, C., Brasiliano-Granitoide in den Bundesstaaten Sāo Paulo und Minas Gerais- eine vergleichende Studie (1996) Münchner Geologische Hefte, A17, p. 258Tucker, G.E., Singerland, R.L., Erosional dynamics, flexural isostasy, and long - Lived escarpments: A numerical modeling study (1994) J. Geophys. Res., 99, pp. 12229-12243Turner, S.P., Hawkesworth, C.J., Gallagher, K., Stewart, K., Peate, D., Mantovani, M., Mantle plumes, flood basalts and thermal models for melt generation beneath continents: Assessment of a conductive heating model (1996) J. Geophys. Res., 101, pp. 11503-1151
Structural And Geochronological Studies Of The Médio Coreaú Domain, Ne Brazil: Constraints On Brasiliano/pan-african Tectonic Evolution In The Nw Part Of The Borborema Province
No full textRecent structural investigations and geochronological studies of rocks from the Médio Coreaú domain in the NW part of northeast Brazil's Borborema Province provide important constraints on the tectonic evolution of the region both preceeding and during the assembly of West Gondwana. Field observations of structural features and fabrics have revealed the presence of four distinct deformational phases in the MCD: D1, D2, D3 and D4. Only the early Paleoproterozoic gneisses record the D1 tectonic event and its preservation is cryptic owing to strong overprinting by the subsequent tectonic phases. The D2, D3 and D4 events affected younger supracrustal rocks and Neoproterzoic magmatic units, and U-Pb geochronological constraints show that all of these tectonic phases represent deformational events that occurred during Brasiliano collision between the West African craton and the NW part of the Borborema Province. The D2 phase, lasting between ca. 622 and 591 Ma, represents a frontal collision stage, which generated NW verging thrust-nappe systems, low-angle foliation, high-grade metamorphism and crustal anatexis. Transition to a strike-slip regime (D3) occurred at around 591 Ma when the region entered a phase of escape tectonics. During this time, the motion of crustal blocks towards NE and E was accommodated along numerous anastomosing shear zones. Syntectonic emplacement of granitoid plutons took place in transtensional domains of the shear zone system. The intrusion of late tectonic granitoids and rapid uplift and cooling of the orogen around 560 Ma as a result of D4 transpressional movements marked the end of the D3 transcurrent regime. These findings show that only the early Paleoproterozoic gneisses in the Médio Coreaú domain are polycyclic in nature. Rather than representing distinct orogenic events, the D2, D3 and D4 tectonic phases are a manifestation of progressive deformational events that developed in response to changes in the regional stress field during convergence and collision between the Borborema Province and its surrounding cratons.17Almeida, F.F.M., Hasui, Y., Brito Neves, B.B., Fuck, R.A., Brazilian structural provinces: An introduction (1981) Earth Science Reviews, 17, pp. 1-29Bouchez, J.L., Tubià, J.M., Mainprice, D., Déformation naturelle du quartz: Coexistence des systèmes de glissement de direction et à haute température (migmatites de la nappe d'Ojén, Espagne) (1985) Comptes Rendus De L'Académie Des Sciences De Paris, 301, pp. 841-846Brito Neves, B.B., dos Santos, E.J., Van Schmus, W.R., Tectonic history of the Borborema Province, northeastern Brazil (2000) Tectonic Evolution of South America. Proceedings of the Thirty-first International Geological Congress, pp. 151-182. , In: Cordani, U., Milani, E.J., Thomaz Filho, A., Campos, D.A. (Editors, Rio de Janeiro, BrazilBrito Neves, B.B., Van Schmus, W.R., Santos, E.J., Campos Neto, M.C., Kozuch, M., O evento Cariris Velhos na Província Borborema: Integração de dados, implicações e perspectivas (1995) Revista Brasileira De Geociências, 25, pp. 279-296Brito Neves, B.B., Campos Neto, M.C., Fuck, R.A., From Rodinia to Western Gondwana: An approach to the Brasiliano-Pan African Cycle and orogenic collage (1999) Episodes, 22, pp. 155-166Brito Neves, B.B., Cordani, U.G., Tectonic evolution of South America during the Late Proterozoic (1991) Crustal Evolution In the Late Proterozoic. Precambrian Research, 53, pp. 23-40. , In: R.J. Stern and W.R. Van Schmus (editors)Caby, R., Precambrian terrenes of Benin-Nigeria and northeast Brazil and the Late Proterozoic south Atlantic fit. Geological Society of America (1989) Special Paper, 230, pp. 145-158Caby, R., Arthaud, M.H., Archanjo, C.J., Lithostratigraphy and petrostructural characterization of supracrustal units in Brasiliano Belt of Northeast Brazil: Geodynamic implications (1995) Journal of South American Earth Sciences, 8, pp. 235-246Cavalcante, J., Ferreira, C.A., (1983) Mapa Geológico Do Estado Do Ceará. Scale 1:500.000, , MME/CPRM - BrasíliaCondie, K., (1989) Plate Tectonics and Crustal Evolution, p. 476. , Pergamon Press. Third edition, New YorkDantas, E.L., Hackspacher, P.C., Van Schmus, W.R., Brito Neves, B.B., Archean accretion in the São José do Campestre Massif, Borborema Province, Northeast Brazil (1998) Revista Brasileira De Geociências, 28, pp. 221-228Fetter, A.H., (1999) U-Pb and Sm-Nd Geochronological Constraints On the Crustal Framework and Geologic History of Ceará State, NW Borborema Province, NE Brazil: Implications For the Assembly of Gondwana, p. 164. , PhD thesis, Department of Geology, Kansas University, Lawrence, KS - USAFetter, A.H., Van Schmus, W.R., Santos, T.J.S., Arthaud, M., Nogueira Neto, J.A., U-Pb and Sm-Nd geochronological constraints on the crustal evolution and basement architecture of Ceará State, NW Borborema Province, NE Brazil: Implications for the existence of the Paleoproterozoic supercontinent "Atlantica" (2000) Revista Brasileira De Geociências, 30, pp. 102-106Fetter, A.H., Van Schmus, W.R., Santos, T.J.S., Arthaud, M., Nogueira Neto, J.A., (1997) Geologic History and Framework of Ceará State: Northwest Borborema Province, NE Brazil. South American Symposium On Isotope Geology, pp. 112-114. , Brazil, Extended AbstractsFetter, A.H., Santos, T.J.S., Nogueira Neto, J.A., Van Schmus, W.R., Geochronology U/Pb in zircon and Sm/Nd in total rock of the State of Ceará-results initials (1995) 16th Symposium of Geology of the Northeast, Recife. Sociedade Brasileira De Geociências, 14, pp. 418-422Fetter, A.H., Santos, T.J.S., Van Schmus, W.R., Hackspacher, P.C., Brito Neves, B.B., Arthaud, M.H., Nogueira, J.A., Wernick, E., Evidence for Neoproterozoic continental arc magmatism in the Santa Quitéria Batholith of Ceará State, NW Borborema Province, NE Brazil: Implications for the assembly of West Gondwana (2003) Gondwana Research, 6, pp. 265-273Guimarães, I.P., Almeida, C.N., Silva Filho, A.F., Araújo, J.M.M., Granitoids marking the end of the Brasiliano (Pan-African) orogeny within the central tectonic domain of the Borborema Province (2000) Revista Brasileira De Geociências, 30, pp. 177-181Hackspacher, P.C., Van Schmus, W.R., Dantas, E.L., Um embasamento Transamazônico na Provincia Borborema. XXXVI Congresso Brasileiro de Geologia (1990) Natal, 6, pp. 2683-2696Jardim de Sá, E.F., Fuck, R.A., Macedo, M.H.F., Peucat, J.J., Kawashita, K., Souza, Z.S., Bertrand, J.M., Pre-Brasiliano orogenic evolution in the Seridó belt, NE Brazil: Conflicting geochronological and structural data (1995) Revista Brasileira De Geociencias, 25, pp. 307-314Jardim de Sá, E.F., (1994) A Faixa Seridó (Província Borborema, NE Do Brasil) E O Seu Significado Geodinâmico Na Cadeia Brasiliana/Pan-Africana, , PhD Thesis, Universidade de Brasilia, Brasilia, DF, BrazilLister, G.S., Hobbs, B.E., The simulation of fabric development during plastic deformation and its application to quartzite: The in-uence of deformation history (1980) Journal of Structural Geology, 2, pp. 355-370Law, R.D., Crystallographic fabrics: A selective review of their application to research in structural geology (1990) Deformation Mechanisms, Rheology and Tectonics. Geological Society of London, Special Publication, 54, pp. 335-352Mainprice, D., Bouchez, J.L., Blumenfeld, P., Tubià, J.M., Dominant slip in naturally deformed quartz: Implications for dramatic plastic softening at high temperature (1986) Geology, 14, pp. 819-822Monié, P., Caby, R., Arthaud, M.H., Timing of the Neoproterozoic Brasiliano orogeny in northeast Brazil: 40Ar/39Ar ages and petrostructural data from Ceará (1997) Precambrian Research, 81, pp. 241-264Passchier, C.W., Trouw, R.A.J., (1996) Micro-tectonics, , Springer, BerlinSantos, T.J.S., (1999) Evolução Tectônica E Geocronológica Do Extremo Noroeste Da Província Borborema, p. 186. , PhD Thesis, Instituto de Geociências e Ciências Exatas IGCE/UNESP-Rio Claro, SP, BrazilSantos, T.J.S., Nogueira Neto, J.A., Fetter, A.H., Hackspacher, P.C., Petrografia e Litogeoquímica das Rochas do Embasamento Cristalino da Região de Granja-CE (2001) Revista De Geologia (UFC), 14, pp. 33-48Sá, J.M., McReath, I., Leterrier, J., Petrology, geochemistry and geodynamic setting of Proterozoic Igneous Suites of the Orós fold belt, Borborema Province, Northeast Brazil (1995) Journal of South American Earth Science, 8, pp. 299-314Sial, A.N., Ferreira, V.P., Almeida, A.R., Romano, A.W., Parente, C.V., Costa, M.L., Carbon isotope fluctuations in Precambrian carbonate sequences of several localities in Brazil (2000) Anais Da Academia Brasileira De Ciências, 72, pp. 539-558Silva Filho, A.F., Guimarães, I.P., Van Schmus, W.R., Crustal evolution of the Pernambuco-Alagoas Complex, Borborema Province, NE Brazil: Nd isotopic data from Neoproterozoic granitoids (2002) Gondwana Research, 5, pp. 409-422Torquato, J.R., Cordani, V.G., Brazil-Africa geological links (1981) Earth Science Reviews, 17, pp. 155-176Toteu, S.F., Van Schmus, W.R., Penaye, J., Nyobe, J.B., U-Pb and Sm-Nd evidence for Eburnian and Pan-African high-grade metamorphism in cratonic rocks in southern Cameroon (1994) Precambrian Research, 67, pp. 321-347Trompette, R., (1994) Geology of Western Gondwana, Pan-African-Brasiliano Aggregation of South America and Africa, p. 350. , A.A. Balkema, Rotterdam, BrookfieldVan Schmus, W.R., Brito Neves, B.B., Hackspacher, P.C., Babinski, M., U/Pb and Sm-Nd geochronologic studies of the eastern Borborema Province, Northeastern Brazil: Initial conclusions (1995) Journal of South American Earth Science, 8, pp. 267-288Van Schmus, W.R.V., Brito Neves, B.B., Williams, I.S., Hackspacher, P.C., Fetter, A.H., Dantas, E.L., Babinski, M., The Seridó Group of NE Brazil, a late Neoproterozoic pre-to syn collisional basin in Western Gondwana: Insights from SHRIMP U-Pb detrital zircon ages and Sm-Nd residence (TDM) ages (2003) Precambrian Research, 127, pp. 287-327Weinberg, R.F., Sial, A.N., Mariano, G., Plutons and shear zones in the Borborema Province, Brazil (2004) Geology, 32, pp. 377-38
Interview With P.C. Hodgell
No full textP.C. Hodgell, author of God Stalk and Dark of the Moon, was one of the many authors who attended Mythcon XIX in Berkeley last summer. She was good enough to meet with the Mythic Circle writers\u27 roundtable and share some of her experiences with us. The following is transcribed from a low-quality tape; when it was possible to recognize a speaker’s voice I have identified them - others are noted as ct. Hope you enjoy it
Neoproterozoic Tectonic And Magmatic Episodes In The Nw Sector Of Borborema Province, Ne Brazil, During Assembly Of Western Gondwana
No full textThe Médio Coreaú domain of NE Brazil is located along the northwest margin of Borborema Province, the western branch of a Brasiliano/Pan-African collisional belt that formed during the assembly of Western Gondwana. The early Paleoproterozoic basement of the Médio Coreaú domain is composed of migmatitic gneisses and juvenile granulites, overlain by late Paleoproterozoic and Neoproterozoic rocks intruded by syn- to post-tectonic Brasiliano granitoids. According to integrated structural and geochronological data (U-Pb zircon and monazite ages), the Neoproterozoic tectonic evolution of the Médio Coreaú is characterized by low-angle thrusting and transcurrent deformation. U-Pb geochronological data from plutons intruded during this compressional regime indicate the collisional evolution began at approximately 622 Ma and continued until about 591 Ma. The continuation of convergence until approximately 560 Ma resulted in the formation of NE-SW and E-W shear zones within the Borborema Province and adjoining West African provinces. The final stage of the ductile tectonism was characterized by uplift and high-angle fault generation between approximately 560 and 545 Ma. The last tectonic event was an extensional phase, resulting in the formation of the Jaibaras graben and intrusion of post-orogenic granites at around 532 Ma. © 2007 Elsevier Ltd. All rights reserved.253271284Almeida, F.F.M., Hasui, Y., Brito Neves, B.B., Fuck, R.A., Brazilian structural provinces: an introduction (1981) Earth Science Reviews, 17, pp. 1-29Boher, M., Abouchami, W., Michard, A., Albarede, F., Arndt, N.T., Crustal Growth in West Africa at 2.1 Ga (1992) Journal Geophysics Research, 97, pp. 345-369Brito Neves, B.B., 1975. Regionalização geotectônica do pré-Cambriano nordestino. Thesis, Universidade de São Paulo, p. 198Brito Neves, B.B., 1983. O mapa geológico do nordeste oriental do Brasil, Escala 1;1.000.000. Thesis, Livre docência, Universidade de São Paulo, p. 177Brito Neves, B.B., Cordani, U.G., Tectonic evolution of South America during the Late Proterozoic (1991) Precambrian Research, 53, pp. 23-40Brito Neves, B.B., dos Santos, E.J., Van Schmus, W.R., 2000. Tectonic history of the Borborema Province, northeastern Brazil. In: U. Cordani, E.J. Milani, A. Thomaz Filho, Campos, D.A. (Eds.), Tectonic Evolution of South America. Proceedings of the Thirty-first International Geological Congress, Rio de Janeiro, Brazil, pp. 151-182Brito Neves, B.B., Van Schmus, W.R., Fetter, A.H., North-western Africa-North-eastern Brazil. Major tectonic links and correlation problems (2002) Journal of African Earth Sciences, 34, pp. 275-278Brown, M., Solar, G.S., Granite ascent and emplacement during contractional deformation in convergent orogens (1998) Journal of Structural Geology, 20, pp. 1365-1393Caby, R., 1989. Precambrian terrane of Benin-Nigeria and northeast Brazil and Proterozoic Atlantic fit barks. Geological Soc. of America, Special paper, 230, pp. 145-158Caby, R., Arthaud, M.H., Major Precambrian nappes of the Brazilian Belts, Ceará, Northeast Brazil (1986) Geology, 14, pp. 871-874Caby, R., Arthaud, M.H., Archanjo, C.J., Lithostratigraphy and petrostructural characterization of supracrustal units in Brasiliano Belt of Northeast Brazil: geodynamic implications (1995) Journal of South American Earth Sciences, 8, pp. 235-246Caby, R., Sial, A.N., Arthaud, M.H., Vauchez, A., Crustal evolution and the Brasiliano orogeny northeast Brazil (1991) The West African orogens and circum-Atlantic correlative, pp. 373-397. , Dallmeyer R.D., and Lécorché J.P. (Eds), Springer-VerlagCastaing, C., Feybesse, J.L., Thiéblemont, C., Triboulet, C., Chevremont, P., Paleogeographical reconstructions of the Pan-Africano/Brasiliano Orogen: closure of an oceanic domain or intracontinental convergence between major blocks? (1994) Precambrian Research, 69, pp. 327-344Castro, N.A., Basei, M.A.S., Sato, K., 2003. Nd data from Central Ceará Domain: Archean relics, Paleoproterozoic record and Neoproterozoic crustal reworking. In: Proceedings IV Symposium on South American Isotope Geology, Brazil, pp. 160-163Cavalcanti, J., Ferreira, C.A., 1983. Mapa Geológico do Estado do Ceará. Scale 1:500,000, MME/CPRM - BrasíliaCosta, M.J., França, J.B., Bacchiegga, I.F., Habekost, C.R. Cruz, W.B. da, 1973. Geologia da Bacia JaibarasCeará, Piauí e Maranhão. Projeto Jaibaras. DNPM/CPRM. Relatório final (5 vols.)Dantas, E.L., Van Schmus, W.R., Hackspacher, P.C., Fetter, A.H., Brito Neves, B.B., Cordani, U., Nutman, A.P., Williams, I.S., The 3.4-3.5 Ga São José do Campestre massif, NE Brazil: remnants of the oldest crust in South America (2004) Precambrian Research, 130, pp. 113-137Djouadi, M.T., Gleizes, G., Ferré, E., Bouchez, J.L., Caby, R., Lesquer, A., Oblique magmatic structures of two epizonal granite plutons, Hoggar, Algeria: late-orogenic emplacement in a transcurrent orogen (1997) Tectonophysics, 279, pp. 351-374Duguet, M., Faure, M., Granitoid emplacement during a thrusting event: structural analysis, microstructure and quartz c-axis patterns. An example from Hercynian plutons in the French Massif Central (2004) Journal of Structural Geology, 26 (5), pp. 927-945Ferré, E.C., Caby, R., Peucat, J.J., Capdevila, R., Monié, P., Pan-African, post-collisional, ferro-potassic granite and quartz-monzonite plutons of Eastern Nigeria (1998) Lithos, 45 (1-4), pp. 255-279Ferreira, V.P., Sial, A.N., Jardim de Sá, E.F., Geochemical and isotopic signatures of Proterozoic granitoids in terranes of the Borborema structural province, northeastern Brazil (1998) Journal of South American Earth Sciences, 11 (5), pp. 439-455Fetter, A.H., 1999. U-Pb and Sm-Nd Geochronological constraints on the crustal framework and geological history of Ceará State, NW Borborema Province, NE Brazil: implications for the assembly of Gondwana. University of Kansas, Ph.D. thesis, 164 ppFetter, A.H., dos Santos, T.J.S., Van Schmus, W.R., Hackspacher, P.C., Brito Neves, B.B., Arthaud, M.H., Nogueira Neto, J.A., Wernick, E., Evidence for Neoproterozoic continental arc magmatism in the Santa Quitéria batholith of Ceará State, NW Borborema Province, NE Brazil: implications for assembly of West Gondwana (2003) Gondwana Research, 6, pp. 265-273Fetter, A.H., Van Schmus, W.R., dos Santos, T.J.S., Arthaud, M.H., Nogueira Neto, J.A., 1997. Geologic history and framework of Ceará State: northwest Borborema Province, NE Brazil. South American Symposium on Isotope geology, Brazil, Extended Abstracts, pp. 112-114Fetter, A.H., Van Schmus, W.R., dos Santos, T.J.S., Arthaud, M., Nogueira Neto, J.A., 2000. U-Pb and Sm-Nd geochronological constraints on the crustal evolution and basement architecture of Ceará State, NW Borborema Province, NE Brazil: implications for the existence of the Paleoproterozoic supercontinent "Atlantica". Revista Brasileira de Geociências, 30, pp. 102-106Fowler Jr., T.K., Paterson, S.R., Timing and nature magmatic fabrics from structural relations around stoped blocks (1997) Journal Structural Geology, 19, pp. 209-224Gaudette, H.E., Abreu, F.d.A.M.d., Lafon, J.M., Gorayeb, P.S.d.S., Evolução transamazônica do cinturão de cisalhamento noroeste do Ceará: novas evidências geocronológicas (1993) Ann. Simp. Geologia do Nordeste, 13, pp. 317-319Gorayeb, P.S.S., Abreu, F.A.M., Moura, C.A.V., Geração de corpos graníticos batolíticos sin-transamazônicos na Província Borborema: o exemplo do granitóide Chaval (1995) Simpósio de Geologia do Nordeste, Recife, 14 (2), pp. 414-417Guimarães, I.P., Almeida, C.N., Da Silva Filho, A.F., Araújo, J.M.M., Granitoids marking the end of the Brasiliano (Pan-African orogeny within the Central Tectonic Domain of the Borborema Province (2000) Revista Brasileira de Geociências, 30 (1), pp. 177-181Heilbron, M., Machado, N., Timing of terrane accretion in the Neoproterozoic - Eopaleozoic Ribeira orogen (SE Brazil) (2003) Precambrian Research, 125, pp. 87-112Jardim de Sá, E.F., 1994. A faixa Seridó (Província Borborema) e o seu significado geodinâmico na cadeia Brasiliana/Pan-Africana. Inst. De Geociência, Universidade de Brasília, Ph.D. thesis, 803pKrogh, T.E., A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations (1973) Geochimica et Cosmochimica Acta, 37, pp. 485-494Krogh, T.E., Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique (1982) Geochimica et Cosmochimica Acta, 46, pp. 637-649Ludwig, K.R., 1993. ISOPLOT - A plotting and regression program for radiogenic-isotope data: version 2.70. U.S. Geological Survey Open-File Report 91-445, 42pMacedo, M.H.P., Sá, J.M., Kawashita, K., A idade da faixa Orós: resultados preliminares (1988) Revista Brasileira de Geociências, 18, pp. 1-24Monié, P., Caby, R., Arthaud, M.H., The Neoproterozoic Brasiliano Orogeny in Northeast Brazil: 40Ar/39Ar and petrostructural data from Ceará (1997) Precambrian Research, 81, pp. 241-264Nascimento, D.A., Gava, A., Pires, J.L., Teixeira, W., 1981. Geologia da folha sa 24 - Fortaleza. In: Projeto Radam Brasil. DNPM, Rio de Janeiro. vol. 21, 23-212Neves, S.P., Mariano, G., Assessing the tectonic significance of a large-scale transcurrent shear zone system: the Pernambuco lineament, northeastern Brazil (1999) Journal of Structural Geology, 21 (10), pp. 1369-1383Neves, S.P., Vauchez, A., Feraud, G., Tectono-thermal evolution, magma emplacement, and shear zone development in the Caruaru area (Borborema Province, NE Brazil) (2000) Precambrian Research, 99 (1-2), pp. 1-32NogueiraNeto, J.A., Marques Jr., F., Néri, T.F.O., Pedreira, L.H.S.T., 1989. Contribuição à geologia do município de Chaval (CE). Atas do XIII Simpósio de Geologia do NE. Fortaleza, SBG, 11, 27-28Oliveira, D.C., Stratigraphic interplays between igneous and sedimentary events in the Early Paleozoic Jaibaras trough (Northeast Brazil) (2000) Revista Brasileira de Geociências, 30 (3), pp. 423-427Oliveira, D.C., Mohriak, W.U., Jaibaras trough: an important element in the early tectonic evolution of the Parnaíba interior sag basin, Northern Brazil) (2003) Marine and petroleum geology, 20, pp. 351-383Paquette, J.L., Caby, R., Djouadi, M.T., Bouchez, J.L., U-Pb dating of the end of the Pan-African orogeny in the Tuareg shield: the post-collisional syn-shear Tioueine pluton (Western Hoggar, Algeria) (1998) Lithos, 45 (1-4), pp. 245-253Parrish, R.R., U-Pb of monazite and its application to geological problems (1990) Canada Journal of Earth Science, 27, pp. 1431-1450Parrish, R.R., An improved micro-capsule for zircon dissolution in U-Pb geochronology (1987) Isotope Geoscience, 66, pp. 99-102Passchier, C.W., Trouw, R.A.J., (1996) Microtectonics, , Springer Verlag pp. 325Paterson, S.R., Vernon, R.H., Tobisch, O.T., A review of criteria for the identification of magmatic and tectonic foliations in granitoids (1989) Journal of Structural Geology, 11 (3), pp. 349-363Santos, T.J.S., 1993. Aspectos geológicos de uma área a sudoeste de Granja, NW do Ceará. Dissertação de mestrado, Instituto de Geociências e Ciências Exatas IGCE/UNESP-Rio Claro, São Paulo, p. 159Santos, T.J.S., 1999. Evolução Tectônica e Geocronológica do Extremo Noroeste da Província Borborema. PhD unpublished thesis, Instituto de Geociências e Ciências Exatas IGCE/UNESP-Rio Claro, São Paulo, 186pSantos, T.J.S., Hackspacher, P.C., 1991. Geologia do Grupo Martinópole, NW do Ceará. Anais do XXX Congresso Brasileiro de Geologia, São PauloSantos, T.J.S., Nogueira Neto, J.A., Fetter, A.H., Hackspacher, P.C., 2001. Petrografia e Litogeoquímica das Rochas do Embasamento Cristalino da Região de Granja - CE. Revista de Geologia (UFC) 14, pp. 33-48Santos, T.J.S., Santos, A.A., Dantas, E.L., Fuck, R.A., Parente, C.V., 2003. Nd Isotopes and the provenance of metasediments of the Itataia Group, northwest Borborema Province, NE Brazil. Proceedings of the IV Symposium on South American Isotope Geology, Brazil, pp. 286-289Santos, T.J.S., Souza, G.M., Queiroz, H.B., Nogueira Neto, J.A., Parente, C.V., 2002. Tafrogênese estateriana no embasamento paleoproterozóico do NW da Província Borborema: uma abordagem petrográfica, geoquímica e geocronológica. XLI Congresso Brasileiro de Geologia, João Pessoa, pp. 337-337Sial, A.N., Long, L.E., Figueiredo, M.H., Rare Earth element geochemistry of the Meruoca and Mucambo plutons, Ceará, Northeast Brazil (1981) Chemical Geology, 31, pp. 271-283Stacey, J.S., Kramers, J.D., Approximation of terrestrial lead isotope evolution by a two-stage model (1975) Earth and Planetary Science Letters, 26, pp. 207-221Steiger, R.H., Jäger, E., Subcommision on Geochronology: convention on the use of decay constants in geo- and cosmochronology (1977) Earth and Planetary Science Letters, 36, pp. 359-362Torquato, J.R., Cordani, V.G., Brazil-Africa geological links (1981) Earth Science Reviews, 17, pp. 155-176Trompette, R., (1994) Geology of western Gondwana Pan-African/Brasiliano aggregation of South America and Africa, , Brookfield: Balkema, Rotterdam 350pVan Schmus, W.R., Brito Neves, B.B., Hackspacher, P., Babinski, M., U/Pb and Sm/Nd geochronolgic studies of eastern Borborema Province, northeastern Brazil: initial conclusions (1995) Journal South America Earth Sciences, 8, pp. 267-288Van Schmus, W.R., Brito Neves, B.B., Hackspacher, P., Fetter, A.H., Dantas, E.L., Babinski, M., The Seridó Group of NE Brazil, a late Neoproterozoic pre- to syn-collisional basin in West Gondwana: insights from SHRIMP U-Pb detrital zircon ages and Sm-Nd crustal residence (TDM) ages (2003) Precambrian Research, 127, pp. 287-32
Nonequilibrium and classical dissipation scalings in DNS of homogeneous isotropic decaying turbulence
No full textWe present data from direct numerical simulations of homogeneous isotropic decaying turbulence showing both the non-equilibrium and the classical dissipation scalings reported in wind-tunnel experiments of both regular and fractal grid-generated turbulence, i.e. Cε ∼ (Re0/Reλ)n with n of order unity and Cε ∼ constant, respectively (Re0 and Reλ are global and local Reynolds numbers). These two dissipation behaviours lead to different power-law decay exponents in both regimes also in accord with the experiments. Finally, we show that in both regimes the maximum non-linear energy cascade flux, Π, reasonably satisfies the classical expectation that Π ∼ K3/2/l
Reinforcing glass with glass: Application of transport reinforcement in structural glass beams
No full textDue to the increasing demand of transparency in buildings, it is no longer unusual to apply transparent elements into the bearing structure. Glass is a strong but very brittle material, which means safety is rather problematic should it break. Safety is an issue that has to be improved before glass can be considered suitable for structural elements. Earlier studies have shown that reinforcing glass beams will provide reasonable residual load-bearing capacity, which could provide this safety. Glass fibre is suitable as reinforcement material when the transparency is regarded as important. In February 2009 at the Faculty of Architecture at Delft University of Technology, P.C. Louter designed and tested a laminated glass beam with embedded glass fibre rods. The bonding interlayer consisted of SentryGlas foil, developed by DuPont and often applied for lamination in hurricane-resistant windows. The results were promising and the concept showed high potential for further research. The study of this thesis project is focussed on improving the concept of embedding reinforcement in laminated glass beams.Design and ConstructionCivil Engineering and Geoscience
Thermochronology Of The South American Platform In The State Of São Paulo, Brazil, Through Apatite Fission Tracks
No full textThe fission-track method (FTM) in apatite was applied to 45 samples collected in the Serra da Mantiqueira (Mantiqueira mountain range), the Serra do Mar (Mar mountain range), regions next to these mountain ranges and the coastal region between Ubatuba and Santos in the State of São Paulo, Brazil, to study the thermochronology of the South American Platform in southeast Brazil and its influence on Santos and Campos basins. The data presented in this work complement the previously presented data on the same region (Tello Saenz et al., 2003. J. S. Am. Earth Sci. 15, 765-774) with 31 new samples analyzed. The weighted mean of the corrected ages from high Mantiqueira (around 1000 m), (121±6)Ma, coincides with the South Atlantic opening. The fact that its thermal history starts at a relatively low temperature (∼80°C) suggests that the age of ∼120Ma would be the formation age of Serra da Mantiqueira due to a rapid pulse, in which tracks had no time to be retained at the closure temperature, that is ∼120°C. The Serra do Mar presents a more complicated thermal history, with several reactivations indicated by the changes in the slope of its cooling curve. The thermal histories obtained in the regions next to these mountain ranges are compatible with the results mentioned above. The Santos Basin has unconformities that agree with changes in the slope thermal histories of the studied region. © 2005 Elsevier Ltd. All rights reserved.396635640Almeida, F.F.M., Carneiro, C.D.R., Origem e evolução da Serra do Mar (1998) Rev. Bras. Geociência, 28, pp. 135-150Amaral, G., Born, H., Hadler Neto, J.C., Iunes, P.J., Kawashita, K., Machado Jr., D.L., Oliveira, E.P., Tello Saenz, C.A., Fission track analysis of apatites from São Francisco craton and mesozoic alcaline-carbonatite complexes from central and southeastern Brazil (1997) J. S. Am. Earth Sci., 10, pp. 285-294Fleischer, R.L., Hart, H.R., Fission track dating: Techniques and problems (1972) Proceedings of Burg Wartenstein Conference on Calibration of Hominoid Evolution, pp. 135-170. , W.W. Bishop D.A. Miller S. Colle Scottish Academic Press EdinburghGuedes, S., Hackspacher, P., Hadler Neto, J.C., Iunes, P.J., Paulo, S.R., Ribeiro, L.F.B., Tello Saenz, C.A., Constraints on the evolution and thermal history of the continental platform of southeast Brazil, São Paulo state, using Fission Track Analyses (AFTA) (2000) Rev. Bras. Geociências, 30, pp. 107-109Guedes, S., Hadler Neto, J.C., Iunes, P.J., Paulo, S.R., Zuñiga, A., The spontaneous fission decay constant of 238U using SSNTD (2000) J. Radioanal. Nucl. Chem., 245, pp. 441-442Guedes, S.O., Hadler Neto, J.C., Iunes, P.J., Zuñiga, A.G., Tello Saenz, C.A., Paulo, S.R., The use of the U(n,f) reaction dosimetry in the determination of the λf value through fission-track techniques (2003) Nucl. Instrum. Meth. A, 496, pp. 215-221Guedes, S., Hadler Neto, J.C., Sarkis, J.E.S., Oliveira, K.M.G., Kakazu, M.H., Iunes, P.J., Saiki, M., Paulo, S.R., Spontaneous-fission decay constant of 238U measured by nuclear techniques without neutron irradiation (2003) J. Radioanal. Nucl. Chem., 258, pp. 117-122Hadler Neto, J.C., Paulo, S.R., Iunes, P.J., Tello Saenz, C.A., Balestrieri, M.L., Bigazzi, G., Curvo, E.A.C., Hackspacher, P., A PC compatible Brazilian software for obtaining thermal histories using apatite fission track analysis (2001) Radiat. Meas., 34, pp. 149-154Hadler Neto, J.C., Bigazzi, G., Guedes, S., Iunes, P.J., Oddone, M., Tello Saenz, C.A., Paulo, S.R., Spontaneous U-238 fission half-life measurements based on fission track techniques (2003) J. Radioanal. Nucl. Chem., 256, pp. 155-157Holden, N.E., Hoffman, D.C., Spontaneous fission half-lives ground-state nuclides (Technical report) (2000) Pure Appl. Chem., 72, pp. 1525-1562Iunes, P.J., Hadler Neto, J.C., Bigazzi, G., Tello Saenz, C.A., Guedes, S.O., Paulo, S.R., Durango apatite fission-track dating using length-based age corrections and neutron fluence measurements by thorium thin films and natural U-doped glasses calibrated through natural uranium thin films (2002) Chem. Geol., 187, pp. 201-211Laslett, G.M., Green, P.F., Duddy, I.R., Gleadow, J.W.A., Thermal annealing of fission tracks in apatite 2. The quantitative analysis (1987) Chem. Geol., 65, pp. 1-13Lutz, T.M., Omar, G., An inverse method of modeling thermal histories from apatite fission-track dates (1991) Earth Planet. Sci. Lett., 104, pp. 181-195Pereira, M.J., Feijó, F.J., Bacia de Santos (1994) Bol. Geociências Petrobrás, 8, pp. 219-234Tello Saenz, C.A., Hackspacher, P., Hadler Neto, J.C., Iunes, P.J., Guedes, S.O., Paulo, S.R., Ribeiro, L.F.B., Recognition of Cretaceus, Paleocene and Neogene Tectonic reactivation, through apatite fission-track analysis, in Precambrian areas of the Southeast Brazil: Association with the South Atlantic Ocean opening (2003) J. S. Am. Earth Sci., 15, pp. 765-774Tello Saenz, C.A., Hadler Neto, J.C., Iunes, P.J., Guedes, S., Paulo, S.R., Annealing experiments on induced fission tracks in apatite: I. Measurements of horizontal-confined-track lengths and track densities in basal sections and randomly oriented grains (2004) Am. Mineral., , submitte
Foreign Direct Investment. The key determinants of foreign direct investment in Poland. Case company: ArgusPack P.C.
No full textThe aim of this thesis was to provide a better understanding of the determinants of foreign direct invest-ment (referred to hereafter as “FDI”). The company ArgusPack P.C. is a flexible packaging manufacturer located in Greece which decided to engage using FDI in Poland. Thus, the factors that favors FDI into the selected region had to be determined.
This thesis was a qualitative research, an empirical non-numerical data research. For primary data a series of interviews was conducted by the author and for secondary data peer-reviewed articles and literatures that fully-describe the determinants of FDI were utilized. There are numerous theories that define the FDI, such as Vernon’s product life cycle (Vernon, 1966), Buckley and Casson’s internalization theory (P. Buckley, 1976) and Dunning’s eclectic paradigm (Dunning J. , 2001). In this project, the Dunning’s eclectic paradigm theory was selected and applied, aiming to provide a better understanding of the factors that motivates a company or an organization to become involved using FDI. Through a research study the primary data were collected and through excessive academic research the secondary data were collected as well. In conclu-sion, an analysis of the primary data in combination with the secondary data was done mainly focusing on the participants’ point of view and the way it aligns with the theoretical aspect given by this thesis. In the end a conclusion and recommendation were formed based on all data mentioned and the personal belief of the author.
Finally, since the key determinants have been identified and examined. Foreign direct investment seems to be an adequate business strategy for ArgusPack P.C. in Polan
The Quest for Citations: Drivers of Article Impact
No full textWhy do some articles become building blocks for future scholars, while many others remain unnoticed? We aim to answer this question by contrasting, synthesizing and simultaneously testing three scientometric perspectives – universalism, social constructivism and presentation – on the influence of article and author characteristics on article citations. To do so, we study all articles published in a sample of five major journals in marketing from 1990 to 2002 that are central to the discipline. We count the number of citations each of these articles has received and regress this count on an extensive set of characteristics of the article (i.e. article quality, article domain, title length, the use of attention grabbers and expositional clarity), and the author (i.e. author visibility and author personal promotion). We find that the number of citations an article in the marketing discipline receives, depends upon “what one says†(quality and domain), on “who says it†(author visibility and personal promotion) and not so much on “how one says it†(title length, the use of attention grabbers, and expositional clarity). Our insights contribute to the marketing literature and are relevant to scientific stakeholders, such as the management of scientific journals and individual academic scholars, as they strive to maximize citations. They are also relevant to marketing practitioners. They inform practitioners on characteristics of the academic journals in marketing and their relevance to decisions they face. On the other hand, they also raise challenges towards making our journals accessible and relevant to marketing practitioners: (1) authors visible to academics are not necessarily visible to practitioners; (2) the readability of an article may hurt academic credibility and impact, while it may be instrumental in influencing practitioners; (3) it remains questionable whether articles that academics assess to be of high quality are also managerially relevant.Impact;Citation Analysis;Referencing;Scientometrics;Cite
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