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Book Chapter

Deposition in the Oxygen-Deficient Taconic Foreland Basin, Late Ordovician

Bernward Josef Hay
Bernward Josef Hay
Woods Hole Oceanographic Institution Woods Hole, Massachusetts
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John L. Cisne
John L. Cisne
Department of Geological Sciences, Cornell University Ithaca, New York
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January 01, 1988


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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AAPG Studies in Geology

The Trenton Group (Upper Ordovician Series) of Eastern North America: Deposition, Diagenesis, and Petroleum

Brain D. Keith
Brain D. Keith
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American Association of Petroleum Geologists
ISBN electronic:
Publication date:
January 01, 1988




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