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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 25 (1941)

Issue: 9. (September)

First Page: 1789

Last Page: 1795

Title: Pre-Cretaceous Sediments in Cordillera Oriental of Colombia

Author(s): Parke A. Dickey (2)

Abstract:

Although there are scattered references in the literature to exposures of rocks of Paleozoic age in the Cordillera Oriental of Colombia, the fact that they are widespread and probably represent a good portion of the upper Paleozoic has not generally been recognized. This paper describes briefly several hitherto unpublished localities, and points out that the extensive phyllites and possibly even the schists of the Cordillera are of Paleozoic age.

There has been confusion between the Cocuy series of Cretaceous age and the similar Giron series of pre-Cretaceous age, which series has until recently been considered Cretaceous. This paper points out that the Giron series may be observed in many places resting on Paleozoic strata, and is disconformably overlain by Lower Cretaceous beds. The Giron is not present in the eastern half of the range.

The Cocuy series, on the other hand, is present only in the eastern part of the range, and seems to be equivalent to the limestones and shales of Lower and Middle Cretaceous age of the western part.

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