CIG 05423
CENTRO DE INVESTIGACIONES GEOLOGICAS
Unidad Ejecutora - UE
artículos
Título:
Preglacial palaeo-environmental evolution of the Ediacaran Loma Negra Formation far south-western Gondwana, Argentina
Autor/es:
DANIEL G. POIRÉ; VALDEREZ P. FERREIRA; MARÍA JULIA ARROUY; ALCIDES N. SIAL; LUCÍA GÓMEZ PERAL; SEBASTIÁN RICHIANO; ALAN J. KAUFMAN
Revista:
PRECAMBRIAN RESEARCH
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2018 vol. 315 p. 120 - 137
ISSN:
0301-9268
Resumen:
The Ediacaran Loma Negra Formation may be deposited in a platform environment related to the Clymene Ocean. This unit is exposed in Olavarría and Barker areas within the Tandilia Basin, and composed entirely of lime-mudstones (~40 m thick). The age of Loma Negra Formation (LNF), uppermost unit of the Sierras Bayas Group, was debated, but should be older than 560 Ma (age of the overlying succession) or younger than 600 Ma (age of the underlying iron-rich mudstones Colombo Formation). This ....
