Geochemistry of metasedimentary rocks from the Puncoviscana Complex in the Mojotoro Range, NW Argentina: Implications for provenance and tectonic setting

Low-grade metasedimentary rocks from the Lower Paleozoic Puncoviscana Complex of the Mojotoro Range in NW Argentina have been analyzed for their major and trace elements - including rare earth - in order to constrain their provenance and depositional tectonic setting. They show a moderate degree of...

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Autor principal: Aparicio González, P.A
Otros Autores: Garban, G., Hauser, N., Gigena, L.
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100 1 |a Aparicio González, P.A. 
245 1 0 |a Geochemistry of metasedimentary rocks from the Puncoviscana Complex in the Mojotoro Range, NW Argentina: Implications for provenance and tectonic setting 
260 |b Elsevier Ltd  |c 2017 
270 1 0 |m Aparicio González, P.A.; INGEIS–CONICET Instituto de Geocronología y Geología Isotópica, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires, Ciudad UniversitariaArgentina; email: pamelaaparicio@gmail.com 
506 |2 openaire  |e Política editorial 
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520 3 |a Low-grade metasedimentary rocks from the Lower Paleozoic Puncoviscana Complex of the Mojotoro Range in NW Argentina have been analyzed for their major and trace elements - including rare earth - in order to constrain their provenance and depositional tectonic setting. They show a moderate degree of chemical weathering with intermediate CIA (<75) values and can be classified as metawackes and metapelites. Provenance discrimination diagrams based on major element geochemistry and trace element ratios (i.e., Cr/V, Y/Ni, Th/Co, La/Sc, Th/Sc, Eu/Eu*) suggest that the sediments were derived from upper crustal, felsic source rocks. Tectonic setting discrimination diagrams based on major elements, immobile trace elements (i.e., La- Th- Sc and Th-Sc-Zr/10) and La/Yb vs. Eu/Eu* plots, support an active margin setting associated with a magmatic arc located to the east of the Neoproterozoic–Cambrian Pampean Brazilian arc that formed along the margin of a Mesoproterozoic craton. © 2017  |l eng 
593 |a INGEIS–CONICET Instituto de Geocronología y Geología Isotópica, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina 
593 |a Centro de Geoquímica, Instituto de Ciencias de la Tierra, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, 38951010-A, Venezuela 
593 |a Laboratory of Geochronology, Instituto de Geociências, Universidade de Brasília, Brasília, DF 70910 900, Brazil 
593 |a Universidad Nacional de Salta, Salta, 3700, Argentina 
690 1 0 |a GEOCHEMISTRY 
690 1 0 |a MOJOTORO RANGE 
690 1 0 |a PROVENANCE 
690 1 0 |a PUNCOVISCANA COMPLEX 
690 1 0 |a TECTONIC SETTING 
690 1 0 |a ACTIVE MARGIN 
690 1 0 |a CHEMICAL WEATHERING 
690 1 0 |a GEOCHEMISTRY 
690 1 0 |a METASEDIMENTARY ROCK 
690 1 0 |a PROTEROZOIC 
690 1 0 |a PROVENANCE 
690 1 0 |a TECTONIC SETTING 
651 4 |a ARGENTINA 
700 1 |a Garban, G. 
700 1 |a Hauser, N. 
700 1 |a Gigena, L. 
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