Results 161 to 170 of about 1,303 (189)

Proterozoic metavolcanics from western Sierras Pampeanas terrane, Argentina

Journal of South American Earth Sciences, 1994
Abstract A series of medium grade metamorphic rocks of the western sector of the Sierras Pampeanas Terrane in central western Argentina are represented by amphibolites, gneisses and schists derived from sedimentary as well as from igneous rocks. The metavolcanics consist of amphibolites, quartz-K-feldspar-muscovite schists, and hornblende-biotite and
G. Vujovich, H. Miller, V.A. Ramos
openaire   +1 more source

Origin of the Sierras Pampeanas, Argentina: Flat-slab subduction and inherited structures

Geology, 2022
Abstract The Sierras Pampeanas (27°–33°S) in South America are characterized by basementcored uplifts and shortening that occurs >500 km from the nearest convergent margin. The deformation correlates spatially and temporally with an area of flat-slab subduction of the Nazca plate in the last 10 m.y.
Xiaowen Liu, Claire A. Currie
openaire   +1 more source

Transpressive deformation in the southwestern part of the Sierra de San Luis (Sierras Pampeanas, Argentina)

Journal of South American Earth Sciences, 1998
Abstract In the southwestern part of the Sierra de San Luis, clastic sediments of the Phyllite Group are assigned to the Late Precambrian–Early Cambrian interval and contain acid meta-mamatic dykes. Deposits of the Micaschist Group are interpreted as deeper crustal equivalents. Lower Ordovician intrusions of the Bemberg and Las Verbenas Tonalites, as
openaire   +1 more source

The metamorphic basement of the southern Sierra de Aconquija, Eastern Sierras Pampeanas

2017
The Eastern Sierras Pampeanas are mainly composed of Neoproterozoic-early Palaeozoic metamorphic complexes whose protoliths were sedimentary sequences deposited along the western margin of Gondwana. South of the Sierra de Aconquija, Eastern Sierras Pampeanas, a voluminous metamorphic complex crops out.
Eugenia Cisterna, Clara, Altenberger, Uwe (Dr.), Mon, Ricardo, Günter, Christina (Dr.), Gutierrez, Adolfo Antonio   +4 more
openaire   +1 more source

Mineralogy and Geochemistry of an Epithermal Manganese District, Sierras Pampeanas, Argentina

International Geology Review, 2004
The manganese mineralization studied in this paper represents the major concentration of this element in Argentina. It occurs in an area of 70 x 30 km, in the Sierras Pampeanas ranges, located in the provinces of Cordoba and Santiago del Estero. The analyzed area represents about 30% of the entire mineralized system.
openaire   +1 more source

Counterclockwise rotation during the Cenozoic in the northwestern end of the Sierras Pampeanas, Argentina

2022
Archive ouverte des sciences de la Terre et de l'espace Cette préimpression a été soumise et est à l'étude chez Tectonics. ESSOAr est un lieu de communication précoce ou de rétroaction avant l'examen par les pairs. Les données peuvent être préliminaires.En savoir plus sur les préimpressions préimpressionOuverture d'accèsVous consultez la dernière ...
Adolfo Antonio Gutiérrez, Ricardo Mon, Clara Eugenia Cisterna, Uwe Altenberger, Ahmad Arnous   +4 more
openaire   +1 more source

Erratum to Grenvillian massif-type anothosites in the Sierras Pampeanas

Journal of the Geological Society, 2005
C. Casquet, R.J. Pankhurst, C.W. Rapela, C. Galindo, J. Dahlquist, E. Baldo, J. Saavedra, J.M.González Casado, C.M. Fanning   +8 more
openaire   +1 more source

Mt Studies At Sedimentary Basin Of Sierras Pampeanas, Argentina

6th International Congress of the Brazilian Geophysical Society, 1999
Cristina Pomposiello, Ana Osella, Alicia Favetto, Claudia Sainato   +3 more
openaire   +1 more source

Exhumation of the Chango Real in the Northern Sierras Pampeanas, Argentina

Geological Society of America Abstracts with Programs
Aiden Jackson, Gilby Jepson, Sarah George, Gabriel Beltran-Valero, Barbara Carrapa   +4 more
openaire   +1 more source

Identifying Laurentian and SW Gondwana sources in the Neoproterozoic to Early Paleozoic metasedimentary rocks of the Sierras Pampeanas: Paleogeographic and tectonic implications

Gondwana Research, 2016
CARLOS W Rapela, Sebastian O Verdecchia, C Casquet   +2 more
exaly