Skip navigation
Skip navigation

K-bentonites in the Argentine Precordillera contemporaneous with rhyolite volcanism in the Famatinian Arc

Fanning, Christopher; Pankhurst, Robert J; Rapela, Carlos W; Baldo, Edgardo; Casquet, Cesar; Galindo, Carmen


New U-Pb radiometric dates for K-bentonite horizons within the Lower Cambrian to Middle Ordovician platform carbonates from the Precordillera terrane of NW Argentina provide further constraints on models for the allochthonous or parautochthonous accretion of this terràne. Two K-bentonite layers from the Talacasto section yield indistinguishable sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon dates of 469.5 + 3.2 Ma and 470.1 ± 3.3 Ma respectively. These are within uncertainty of...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Journal of the Geological Society
DOI: 10.1144/0016-764903-130


File Description SizeFormat Image
01_Fanning_K-bentonites_in_the_Argentine_2004.pdf528.83 kBAdobe PDF    Request a copy

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator