Geologica acta

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Geologica acta	Encontrados 5 registros	La búsqueda tardó 0.01 segundos.

11 p, 2.5 MB

Late Holocene tectonic implications deduced from tidal notches in Leukas and Meganisi islands (Ionian Sea) / Evelpidou, N. (National and Kapodistrian University of Athens. Faculty of Geology and Geoenvironment) ; Karkani, A. (National and Kapodistrian University of Athens. Faculty of Geology and Geoenvironment) ; Pirazzoli, P. A. (Paolo A.) (Laboratoire de Géographie Physique (Meudon, França))
In this paper the tectonic behavior of Leukas and Meganisi islands (Ionian Sea) is examined through underwater research carried out in both islands. A possible Late Holocene correlation between coseismic subsidences is attempted and evidenced by submerged tidal notches in both islands. [...]
2017 - DOI (Digital Object Identifier)

10.1344/GeologicaActa2017.15.1.1
Geologica acta, Vol. 15 Núm. 1 (march 2017) , p. 1-9, I-II (Articles)

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14 p, 2.4 MB

The Triassic-Liassic volcanic sequence and rift evolution in the Saharan Atlas basins (Algeria) : eastward vanishing of the Central Atlantic magmatic province / Meddah, A. (Centre Universitaire de Tindouf. Laboratoire GEOREN) ; Bertrand, H. (Laboratoire de Géologie de Lyon, Terre, Planètes, Environnement (Lyon, França)) ; Seddiki, A. (Université d'Oran (Algèria). Faculté des Sciences de la Terre et de l'Univers) ; Tabeliouna, M. (Université d'Oran (Algèria). Faculté des Sciences de la Terre et de l'Univers)
We investigate the Triassic-Liassic sequence in ten diapirs from the Saharan Atlas (Algeria). Based on detailed mapping, two episodes are identified. The first one consists of a volcano-sedimentary sequence in which three volcanic units were identified (lower, intermediate and upper units). [...]
2017 - DOI (Digital Object Identifier)

10.1344/GeologicaActa2017.15.1.2
Geologica acta, Vol. 15 Núm. 1 (march 2017) , p. 11-23 (Articles)

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22 p, 1.9 MB

Zircon U-Pb geochronology and emplacement history of intrusive rocks in the Ardestan section, central Iran / Sarjoughian, F. (University of Kurdistan. Department of Earth Sciences) ; Kananian, A. (University of Tehran. School of Geology)
The Urumieh-Dokhtar Magmatic Arc (UDMA) is part of the Alpine-Himalayan orogenic belt and interpreted to be a subduction-related Andean-type magmatic arc. Along this belt, Eocene volcanics and some gabbroic to granitic bodies crop out. [...]
2017 - DOI (Digital Object Identifier)

10.1344/GeologicaActa2017.15.1.3
Geologica acta, Vol. 15 Núm. 1 (march 2017) , p. 25-36, i-x (Articles)

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17 p, 2.7 MB

The Pobei Cu-Ni and Fe ore deposits in NW China are comagmatic evolution products : evidence from ore microscopy, zircon U-Pb chronology and geochemistry / Liu, Y. G. (Xi'an Center of Geological Survey) ; Li, W. Y. (Xi'an Center of Geological Survey) ; Lü, X. B. (China University of Geosciences. Institute of Geological Survey) ; Huo, Y. H. (Lanzhou University. School of Earth Science) ; Zhang, B. (Peking University. Key Laboratory of Orogenic Belt and Crustal Evolution)
The Pobei mafic-ultramafic complex in northwestern China comprises magmatic Cu-Ni sulfide ore deposits coexisting with Fe-Ti oxide deposits. The Poshi, Poyi, and Podong ultramafic intrusions host the Cu-Ni ore. [...]
2017 - DOI (Digital Object Identifier)

10.1344/GeologicaActa2017.15.1.4
Geologica acta, Vol. 15 Núm. 1 (march 2017) , p. 37-50, III (Articles)

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16 p, 2.8 MB

Late extensional shear zones and associated recumbent folds in the Alpujarride subduction complex, Betic Cordillera, southern Spain / Orozco Fernández, Miguel (Universidad de Granada. Departamento de Geodinámica) ; Alonso Chaves, Francisco Manuel (Universidad de Huelva. Departamento de Ciencias de la Tierra) ; Platt, J. P. (University of Southern California. Department of Earth Sciences)
The existence in the Alpujarride Complex (Betic Cordillera, southern Spain) of a relatively continuous extensional event (following crustal thickening) is based on detailed structural studies and is consistent with the P-T paths and geochronological data established for the Alpujarride rocks. [...]
2017 - DOI (Digital Object Identifier)

10.1344/GeologicaActa2017.15.1.5
Geologica acta, Vol. 15 Núm. 1 (march 2017) , p. 51-66 (Articles)

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