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Neoproterozoic backarc basin: Sensitive high-resolution ion microprobe U-Pb and Sm-Nd isotopic evidence from the Eastern Pampean Ranges, Argentina

Date

Authors

Escayola, Monica P.

Pimentel, Marcio

Armstrong, Richard

Publisher

Geological Society of America Inc

Abstract

The Eastern Pampean Ranges comprise high-grade supracrustal sequences with linear belts of mafic-ultramafic bodies representing ophiolite remnants. New U-Pb and Nd isotopic data suggest that the tectonic evolution of the Pampean Ranges started ca. 640 Ma

Keywords

Keywords: Neoproterozoic subduction; Ophiolite; Provenance; Granite; Metamorphic rocks; Sediments; Volcanic rocks; Tectonics; backarc basin; basin evolution; isotopic composition; ophiolite; provenance; samarium-neodymium dating; SHRIMP dating; subduction; supracru Neoproterozoic subduction; Pampean ranges; Provenance; SHRIMP; Sm-Nd ages

URI

http://hdl.handle.net/1885/28734

Collections

ANU Research Publications

Source

Geology

Type

Journal article

DOI

10.1130/G23549A.1

Restricted until

2037-12-31

Downloads

File

Description

01_Escayola_Neoproterozoic_backarc_basin:_2007.pdf (324.15 KB)

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