A molluscan paleocommunity: A speculative model for an east-west trending, shallow-marine miocene shelf, Navidad, Chile
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Date
1983
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The Ohio State University
Abstract
A subtropical Miocene marine molluscan community is developed from the fossil shells collected by Dr. William J. Zinsmeister. The shells were collected from locations along the coastal and inland areas surrounding Navidad, Chile. The exposed sediments of Navidad are early to middle Miocene in age. Cecioni (1978, 1980) records, from well logs and observations, that sediments had accumulated since the Cretaceous period. Their deposition closely follows the major Andean uplift at the close of the Cretaceous period. The bathymetric and sedimentary trends that seem apparent, when the molluscan paleocommunity is developed, point to Navidad as marking an east-west trending, shallow-marine shelf and offshore island complex that turns southward to the east of Navidad.