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Jurassic paleogeography and Neogene faulting at Corno di Catria (Marche, northern Apennines)
No full text[No abstract available
Deepwater channels and lobes systems in the Messinian turbidite deposits of Laga Basin (central Apennines, Italy).
No full textThe Terni “corridor”: new stratigraphic constraints for the reconstruction of the Jurassic paleotopography of Central Apennines.
No full textThis paper is an outcome of a field-mapping project encompassing the Sabini, Martani and Narnesi-Amerini Mts.
Here, Meso-Cenozoic rocks referable to the Umbria-Marche-Sabina succession are unconformably overlain by Neogene-
Quaternary marine-to-continental and volcanoclastic deposits. During field-work, our attention was focused on the
analysis of Pelagic Carbonate Platform (PCP)/Basin systems, in particular on the identification of Jurassic submarine
paleoescarpments and of facies associations, these being the key tools for understanding the original Jurassic-Early
Cretaceous architecture of the local depositional system and its tectono-sedimentary evolution.
The Terni area is crucial for appreciating the influence of inherited structures on younger deformation (Neogene-
Quaternary). The present-day geological setting of the Terni basin is that of an intermontane basin, bounded by Plio-
Pleistocene normal faults and filled with lacustrine-to-continental deposits of the Tiberino basin. Surrounding it, however,
the Mesozoic inherited elements and their original (Jurassic-to-Early Cretaceous) relationships are well-preserved.
As a result of the Early Jurassic rifting stage, a huge shallow-water carbonate platform (Lazio-Abruzzi Platform)
characterized the eastern sector of the study area (present-day coordinates), passing west-ward to a slope and basinal
setting with intra-basinal highs (respectively, Sabina and Umbria-Marche-Tuscany Basins).
Abundant neritic material was resedimented in the deeper-water environments, and the dispersion patterns mirrored
the sea-bottom rift topography. The widest PCP recognized in the area is the Sabina Plateau, a N-S trending fault-bounded
high passing east- and north-ward to the Sabina Basin via steep paleoescarpments. In particular, the N or NW-dipping
escarpment of the Sabina Plateau is exposed near Terni, facing the Terni plain. Opposite to this across the Plain, the circa
S-dipping Jurassic paleoescarpment of the Poggio Cisterne Vecchie PCP is well-exposed on the southern slopes of the
Martani Mts. These Jurassic paleo-structures imply the existence of a Jurassic basin in the subsurface of the Terni Plain,
as marked by: i) unconformable contacts between the horst-block Calcare Massiccio (silicified) and the Jurassic-Lower
Cretaceous olistolith-bearing hangingwall-block pelagites; ii) neptunian dykes. The existence of an arm of the Sabina
Basin branching westwards (the Terni “corridor”) is constrained by the occurrence of shallow-water material embedded
in Lower-to-Upper Jurassic basin-fill pelagites exposed in the Amelia Ridge. This post-lower Pliensbachian resedimented
material implies a productive carbonate platform (Lazio-Abruzzi Platform) other than the Sabina Plateau, which was
already drowned, as the source-area. The Narni Ridge, in contrast, during the Jurassic was effectively shielded by the
huge Sabina Plateau from the influx of shallow-material shed by the Lazio-Abruzzi Platform
The Outer Albanides: Geodynamic setting, structural architecture, and petroleum potential.
No full textConferenza organizzata da:
Petroleum Group Tectonic Studies Group (TSG
Facies, geometries and architecture of channel and lobe elements of the Messinian Laga 1 and Laga 2 Turbidite complexes.
No full textResearch Activity Report, Contratto di Ricerca tra SAPIENZA Università di Roma e le compagnie petrolifere NorskeShell e Statoi
Relationships between coexisting geodynamic processes and hydrocarbon occurences in the Outer Albanides
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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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