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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A120 (1988)

First Page: 113

Last Page: 134

Book Title: SG 29: The Trenton Group (Upper Ordovician Series) of Eastern North America

Article/Chapter: Deposition in the Oxygen-Deficient Taconic Foreland Basin, Late Ordovician: Chapter 8

Subject Group: Geologic History and Areal Geology

Spec. Pub. Type: Studies in Geology

Pub. Year: 1988

Author(s): Bernward Josef Hay, John L. Cisne

Abstract:

The Taconic Foreland Basin formed during the collision between the North American craton and the Ammonoosuc Arc, approaching from the east. Oxygen-depleted conditions in the basin were probably caused by density stratification in the water column due to a locally humid climate, in combination with stagnant conditions in the world ocean. A long-term cyclicity of alternating 500,000 to 1,000,000 year long "anaerobic phases" and "dysaerobic phases" appears to be the result of a combination of variations in the sedimentation rate, climatic conditions, and changes in the world ocean.

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