145,476 research outputs found
Tarjeta Postal de Antonio Bosch a Pedro Dorado Montero
Tarjeta Postal de D. Antonio Bosch, en nombre de Agustín Bosch, a D. Pedro Dorado Montero, remitiéndole un catálogo de obras de Derecho
Bosch-Ausrüstung für Kraftwagen Aufbau, Arbeitsweise u. Behandlung d. elektrischen Anlage ; Anhang: Bosch-Ausrüstung für Diesel-Fahrzeuge
Bax (Dr. D.). Ontcijfering van Jeroen Bosch
De Tervarent Guy. Bax (Dr. D.). Ontcijfering van Jeroen Bosch. In: Revue belge de philologie et d'histoire, tome 29, fasc. 2-3, 1951. pp. 659-662
Pyroxenite diversity in suprasubduction mantle: preliminary data from the New Caledonia ophiolite
The New Caledonia ophiolitic sequence consists of mantle rocks (harzburgites and minor lherzolites) locally
overlain by mafic-ultramafic cumulates. The harzburgites are highly refractory residues which underwent fluidassisted melting in a fore-arc setting (e.g. Secchiari et al., 2019), whereas the moderately depleted lherzolites
show an abyssal-type affinity (Secchiari et al., 2016). In this study we report the first petrological data on
pyroxenites associated with the peridotites. The pyroxenites were collected in the harzburgites from the central
part of the island (Bogota Peninsula) and in the northern lherzolites (Poum Massif). The Bogota mylonitic
harzburgites record deformation along a paleotransform fault (Prinzhofer and Nicolas, 1980; Teyssier et al.,
2016). The pyroxenites (~5-15 cm thick) generally cut at variable angles the peridotite foliation but concordant
layers, locally boudinaged, also occur, thus suggesting emplacement during and after HT shearing deformation
(Titus et al, 2011). Pyroxenites display textures ranging from cumulitic to porphyroclastic or granoblasticpolygonal. They include orthopyroxenites (Opx+Cr-Spl ±Ol) and websterites, (Opx+Cpx ± Cr-Spl± Edenite).
The pyroxenites commonly have refractory assemblages characterized by Opx and Cpx with high Mg# (91-
92 and ~93, respectively), Cr-rich spinel (Cr# = 50-61) and Fo-rich olivine (91-93 mol%), whereas Cpx and
Opx with higher Fe contents and negligible Cr2
O3 occur in the amphibole-bearing rocks. The Poum lherzolites
contain cm-thick concordant orthopyroxenites characterized by exsolved Opx (Mg# ~91-92), Fo-rich Ol (91-
92 mol%), Spl with variable Cr# (25-52) and small amounts of Cpx. Equilibration T calculated employing
conventional pyroxene geothermometers for the Bogota pyroxenites (930-1040°C) are comparable with those
obtained for the enclosing harzburgites (~950°C). The Poum pyroxenite yields higher T (~1000-1100°C) in the
range of those determined for the porphyroclastic assemblage of the host lherzolites (Secchiari et al., 2016).
Prinzhofer A. & Nicolas A. (1980) - The Bogota Peninsula, New Caledonia: A possible oceanic transform fault. J. Geol.,
88, 387–398.
Secchiari A., Montanini A., Bosch D., Macera, P. & Cluzel D. (2016) - Melt extraction and enrichment processes in the
New Caledonia lherzolites: evidence from geochemical and Sr-Nd isotope data. Lithos, 260, 28-43.
Secchiari A., Montanini A., Bosch D., Macera, P. & Cluzel D. (2019) - Sr, Nd, Pb and trace element systematics of the
New Caledonia harzburgites: Tracking source depletion and contamination processes in a SSZ setting. Geosci. Front.,
in press.
Teyssier C., Chatzaras V. & Von Der Handt A. (2016) - Microfabrics in depleted mantle paleotransform (New Caledonia).
Geophys. Res. Abstr., 18.
Titus S.J., Maes S.M., Benford B., Ferré E.C. & Tikoff B. (2011) - Fabric development in the mantle section of a
paleotransform fault and its effect on ophiolite obduction, New Caledonia. Lithosphere, 3, 221-244
D. R. Bosch Collection index
This index describes the D. R. Bosch collection which contains material regarding opening Stellenbosch University to all racial groups, the political students' organisation (POLSTU) and the UDF Stellenbosch. The collection contains pamphlets ; newspaper clippings ; correspondence ; declarations ; flyers in 4 folders in a pamphlet box
El testamento de D. Juan I, novela histórica de una escritora olvidada: Teresa Arróniz y Bosch
In this article the historical novel El testamento de D. Juan I by Teresa Arróniz y Bosch (1827-1890) also known as Gabriel de los Arcos is analysed. The author passionately narrates a story of crossed political interests and doomed love. The historical events of the novel are not only a pretext for the story but rather they are further developed by the personal motivations of the characters. This has produced a splendid fusion of history and fiction.En el artículo se analiza El testamento de D. Juan I, novela histórica de una escritora olvidada por la crítica actual: Teresa Arróniz y Bosch (1827-1890), conocida también en su tiempo por su pseudónimo Gabriel de los Arcos. La autora narra con gran habilidad una apasionante historia en la que se entrecruzan intereses políticos y amores desgraciados. El gran acierto de Teresa Arróniz es haber creado una novela en la que los hechos históricos no son un mero pretexto, sino que forman parte sustancial de la misma y que se explican por encima de la información documental, por las motivaciones íntimas de sus personajes. Fusión espléndida, en definitiva, entre historia y ficción
Geochemical and Sr-Nd-Pb isotope investigation of the New Caledonia harzburgite: unravelling the evolution of a sub-arc mantle source
The New Caledonia Ophiolite hosts one of the largest obducted mantle sections worldwide, offering a unique opportunity to investigate key mantle processes. The mantle section is dominated by a harzburgite-dunite sequence but it also includes minor spl and pl lherzolites. Geochemical data indicate that the harzburgites suffered multiple melting episodes followed by localized interaction with fluids in a supra-subduction zone setting, while the lherzolites are akin to abyssal-type peridotites (Secchiari et al., 2016).
In order to constrain how these processes affected the behaviour of highly siderophile (HSE: PGE=Os-Ir-Ru-Rh-Pt-Pd+Au-Re) and chalcophile elements (S-Se-Te), a set of fully characterised peridotites (major, trace element, Sr-Nd-Pb isotopes) has been studied.
The lherzolites are slightly serpentinized and display chondritic to slightly suprachondritic 187Os/188Osi (0.1273-0.1329 at 53 Ma). The gently sloping HSE patterns with increasing depletion towards Au are similar to other oceanic or continental lherzolites. These features were inherited from sulphide melt-silicate partitioning during partial melting, melt infiltration and mixing of different generation of sulphides. S contents (202-1268 ppm) were likely increased by serpentinization, whereas Se/Te are similar to other lherzolites.
The harzburgites can be grouped in two sub-types. Type-A (+9.3≤Ndi≤+13.3) have subchondritic 187Os/188Osi (0.1203-0.1254), low Os (0.55-1.51 ppb) and very low Re/Os. Their HSE patterns display strong fractionations, enriched Os-Ir-Ru segments and Pt-Au positive spikes. S-Se-Te are often below the detection limit. These patterns can be ascribed to high melting degrees, leading to sulphide exhaustion and PGE alloys stabilization.
Type-B harzburgites (-0.8≤Ndi≤+4.0) show chondritic to suprachondritic measured 187Os/188Os (0.1273-0.1524), notably low Os-Ir contents (0.003-0.277 ppb) and highly variable 187Re/188Os (2-30). The “melt-like” HSE patterns exhibit strongly fractionated Os-Ir-Ru (OsN/RuN=0.02-0.46), negative Pt anomalies and positive Au spikes. S-Se-Te are close to or below the detection limit. We interpret these compositions as reflecting localized modification of type-A harzburgites by subduction-related fluids and/or hydrous melts, leading to partial destabilization of Os-Ir rich alloys due to high fO2.
Our work suggests that some of the features shown by arc lavas (e.g., positive Pt spikes) may mirror the geochemical signature of the sub-arc mantle.
REFERENCES
Secchiari, A., Montanini, A., Bosch, D., Macera, P., Cluzel, D. (2016): Melt extraction and enrichment processes in the New Caledonia lherzolites: Evidence from geochemical and Sr–Nd isotope data. Lithos, 260, 28-4
The Golden germ du Dr. F. D. K. Bosch
Roşu Arion. The Golden germ du Dr. F. D. K. Bosch. In: Arts asiatiques, tome 10 fascicule 1, 1964. pp. 95-99
Familia Gómez Bosch [Material gráfico]
ÁLBUM FAMILIAR CASA DE COLÓN
Están los hermanos Gómez Bosch, junto con sus padres, D. Castor Gómez Navarro, fundador de "La Tropical", y Dª Ana Bosch Sintes.
De izqda a dcha y de arriba a abajo:
De pie: Pedro Gómez Bosch, José Mesa y López (esposo de Margarita Gómez Bosch), Antonio Gómez Bosch, Juana Gómez Bosch, Tomás Gómez Bosch, José Gómez Bosch, Eduardo Benitez Inglott (Esposo de Francisca Gómez Bosch), Cástor Gómez Bosch.
Sentados: Margarita Gómez Bosch, Ana Bosch Sintes (`Mamabuela`), Mercedes Gómez Bosch, Cástor Gómez Navarro, Francisca Gómez Bosch en brazos su hija Ana Benítez Gómez, Ana Gómez Bosch.
Sentados en el suelo: Juan Gómez Bosch, Sofia Benitez Gómez, Eduardo Benitez Gómez.Copia digital. Madrid : Ministerio de Educación, Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 201
Robert Bosch 1861-1942 - Bosch 1886-1986 Katalog zu d. Jubiläums-Ausstellung im Robert-Bosch-Haus, Stuttgart 24. Sept. bis 16. Nov. 1986
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