Implicancias Paleoecológicas Y Paleoambientales De Una Asociación De Alta Densidad De Chondrites En Depósitos De Talud De La Formación Santo Domingo, Neógeno De Valdivia, Centro-Sur De Chile
2008; Asociación Paleontológica Argentina; Volume: 45; Issue: 1 Linguagem: Inglês
ISSN
1851-8044
AutoresAlfonso Encinas, Luís A. Buatois, Kenneth L. Finger,
Tópico(s)Paleontology and Stratigraphy of Fossils
ResumoNeogene marine strata of the Santo Domingo Formation crop out in the vicinity of Valdivia, south-central Chile (40°S, 73°W). The succession is characterized by dark-gray sandy siltstone with abun- dant Chondrites isp. The occurrence of this ichnotaxon and lower-bathyal benthic foraminifers is consistent with a slope depositional environment. The abundance of Chondrites and the low ichnodiversity reveal poorly oxygenated bottom waters. The Santo Domingo Formation most likely accumulated in fault-con- trolled, intraslope silled minibasins, which werw formed during a major event of Neogene subsidence of the Chilean margin.
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