1,721,110 research outputs found
Estimating sedimentary thickness and uplift of argillaceous extensional basins by a geotechnical and stratigraphic approach: the case of the Radicofani Basin (inner Northern Apennines, Italy)
No full textThe Apennines: Tectonics, Sedimentation, and Magmatism from the Palaeozoic to the Present
No full textThe Apennine orogenic system is a natural laboratory for multidisciplinary and integrated studies. The evolution of the Apennines is framed by the fragmentation of Pangea and the development of the Tyrrhenian Basin. Thus, the Apennines have carried this memory from the Permian and Triassic–Early Jurassic rifting, to the Oligocene–Miocene collision, and finally to the Miocene–Present, during which extension and compression have progressively migrated eastwards. Magmatism, hydrothermalism, and sedimentation in the Apennines have accordingly evolved in time and space.
In this Special Issue, we aim to discuss:
(a) the development of deformation and metamorphism in different tectonic environments, from the rifting stage to the subduction, exhumation, and late-orogenic stages;
(b) the evolution of sedimentation, from the Permian to the Present, and its relation to tectonics;
(c) the Meso-Cenozoic carbonate platform/basin systems, their evolution, and their role in the Apennine orogeny;
(d) the thermochronological evolution of sedimentary units and the dating of deformation episodes through geochemical techniques;
(e) magmatism in space and through time, and its connection to geodynamic evolution, from the mountain chain to the Tyrrhenian Basin;
(f) processes forming geological resources, from oil to ore deposits and geothermal fields;
(g) recent tectonics, as reconstructed through seismological and paleo-seismological studies; and
(h) the crustal structure, as derived by geophysical methods and their interpretation.
The overall aim of this Special Issue is to present a collection of studies that highlights a multiscale and multidisciplinary approach to improving our knowledge of the Apennines
Restricted rifting and its consistence with compressional structures: results from CROP 3 traverse (Northern Apenninies, Italy)
No full textTectonic and sedimentary evolution of the Upper Valdarno Basin: new insights from the lacustrine S. Barbara Basin
No full textWe describe stratigraphic, structural and kinematic data from the sediments of the Upper Pliocene Santa Barbara Basin and from its substratum. The results shed light on the relationships between tectonics and sedimentation in the larger Late Pliocene-Middle Pleistocene Upper Valdarno Basin of which the Santa Barbara Basin is considered a precursor. The sediments filling up the Santa Barbara Basin are made up of alluvial to deltaic and lacustrine deposits, grouped in the Castelnuovo dei Sabbioni (CSB) Synthem, related to Late Pliocene. This synthem was deposited in a tectonic depression reasonably delimited to the East by a west-dipping normal fault system and delimited to the North and to the South by left-lateral trans-tensional shear zones, which controlled the main directions of the alluvial drainage. During Early Pleistocene, a new master normal fault system (Trappola fault system) developed further to the East, determining the widening of the previous tectonic depression, now delimited to the North and to the South by the regional Piombino-Faenza and Arbia-Val Marecchia transfer zones, respectively. In this new tectonic depression, with a dominant axial drainage direction, alluvial, fluvio-aeolian and fluvial sediments (Montevarchi Synthem, VRC) deposited during Early Pleistocene. The VRC Synthem, being located in the hanging-wall of the Trappola normal fault system, is slightly tilted to the NE. Finally, during Early-Middle Pleistocene, axial fluvial deposits (Torrente Ciuffenna Synthem, UFF), sealed the previously formed brittle structures. Our kinematic and structural data allow us to confirm the interpretation that the Santa Barbara Basin is the precursor of the Upper Valdarno Basin and that both basins developed in structural depressions formed by the interplay between normal and transfer faults, framed in the extensional tectonics which characterizes Tuscany since Miocene
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Geology of Montecastelli Pisano (inner Northern Apennines, Italy): normal and transfer fault zones affecting a dismantled ophiolite bearing orogenic wedge
No full textWe present the geological map (1:10.000) of the Montecastelli Pisano area, where (i) the relationships between Neogene-Quaternary transfer and normal faults have been carefully mapped (Sheet 1), and (ii) the mantle sequence of the Ligurian Ocean has been analysed (Sheet 2). Fault analyses allowed to define: (i) NE-trending fault system (left-lateral strike- to oblique-slip faults) belonging to a transfer shear zone; and (ii) NW-trending normal to oblique-slip faults. Their evolution is framed in the extensional tectonics affecting the Northern Apennines since Early-Middle Miocene. The ophiolite complex is constituted by serpentinized spinelharzburgite with minor serpentinized dunite channels cut by gabbro dykes. A km-scale cataclastic zone cut the mantle section, locally hosting Cu-Fe mineralization. The goal of this work is to present the distribution of the main fractures affecting an area where the occurrence of ophiolite can favor the success of the CO2 reinjection project
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Preliminary results on the blasthesis-deformation relationships in the thermometamorphic aureole of Rossano Calabro (Sila Massif, Northern Calabria)
No full textIn the Rossano area, the metapelite and meta-arenite sequence of the Bocchigliero Complex (Ordovician-Carboniferous) was intruded by a late Variscan granodiorite belonging to the Sila Batholith. The granodiorite emplacement determined a widespread thermal metamorphic aureole with poikiloblastic cordierite and diffuse crenulation cleavage, with increasing fabric intensity toward the pluton boundary. Microstructural observations and porphyroblasts inclusion-trails analysis provided evidence for the syn-kinematic growth of the cordierite with respect to the developing crenulation cleavage
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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