RT Journal Article
T1 Procedencia y edad de las diamictitas del Paleozoico inferior de la cuenca de Perú-Bolivia (Gondwana occidental)
T1 Provenance and age of diamictites in the lower Palaeozoic of the Peru-Bolivia basin (western Gondwana)
A1 Díaz Martínez, Enrique
AB An extensive diamictite-bearing unit is present within the lower Palaeozoic siliciclastic sequence ofthe Central Andes. A review of its lithostratigraphy, sedimentology and biostratigraphy allows to differentiatetwo subunits according to their provenance and age. The correlative San Gabán Formation (Perú), CancañiriFormation (Bolivia) and Zapla Formation (NW Argentina), of Hirnantian(?)-Llandovery age, presents evidencefor resedimentation from a glaciated tectonically-active source area located to the west and south. Itincludes granitoid boulders, and large olistoliths of late Ordovician units. In central Bolivia, the lowermostKirusillas Formation (early Wenlock) presents evidence for resedimentation of shallow shelf deposits froma nearby source located to the east and north. It includes olistoliths of the Sacta Limestone Member(earliest Wenlock). Only careful sedimentology and biostratigraphy may discern between the two unitswhen both are present in the same section
PB Sociedad Geológica de España
YR 2005
FD 2005
LK http://hdl.handle.net/10272/8752
UL http://hdl.handle.net/10272/8752
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026