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Book Chapter

ODP, Sequences, and Global Sea-Level Change: Comparison of Icehouse vs. Greenhouse Eustatic Changes

By
Kenneth G. Miller
Kenneth G. Miller
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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James V. Browning
James V. Browning
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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James D. Wright
James D. Wright
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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Gregory S. Mountain
Gregory S. Mountain
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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John C. Hernández
John C. Hernández
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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Richard K. Olsson
Richard K. Olsson
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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Mark D. Feigenson
Mark D. Feigenson
Department of Geological Sciences Rutgers University Piscataway, New Jersey 08854
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Michelle A. Kominz
Michelle A. Kominz
Western Michigan University Kalamazoo, Michigan 49008-5150
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William A. Van Sickel
William A. Van Sickel
Western Michigan University Kalamazoo, Michigan 49008-5150
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Peter J. Sugarman
Peter J. Sugarman
New Jersey Geological Survey PO Box 427 Trenton, New Jersey 08625
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Published:
December 01, 2002

Abstract

Understanding eustatic (global sea-level) changes and their effects on the geological record is an important but difficult task because eustatic effects are complexly intertwined with basin subsidence and changes in sediment supply. Led by Peter Vail, researchers at EPR reconstructed a eustatic history by applying sequence stratigraphy to a global array of proprietary seismic profiles, industry wells, and outcrops. This EPR eustatic record has been controversial owing to methodological concerns and reliance on largely unpublished data. The Ocean Drilling Program (ODP) has focussed on drilling the New Jersey, Bahamas, and Australian margins for sea-level studies and has accomplished the following:

  1. Validated a transect approach of drilling passive continental margins and carbonate platforms (onshore, shelf, slope);

  2. Tested and validated the assumption that the primary cause of impedance contrasts producing seismic reflections on continental margins are stratal surfaces including unconformities;

  3. Proved that the ages of sequence boundaries on margins can be determined to better than ±0.5 m.y. and provided a chronology of eustatic lowering for the past 100 m.y.;

  4. Achieved orbital-scale (perhaps suborbital) stratigraphic resolution on continental slopes and carbonate platforms;

  5. Showed that siliciclastic and carbonate margins yield correlatable and in some cases comparable records of sea-level change;

  6. Evaluated the sedimentary response of both tropical and cool-water carbonate platforms to eustatic changes;

  7. Begun to constrain the amplitude and cause of eustatic change for both the Iceahouse World of the past 42 m.y. and the Greenhouse World of 250-42 Ma, as outlined below.

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Contents

GCSSEPM

Sequence Stratigraphic Models for Exploration and Production: Evolving Methodology, Emerging Models and Application Histories

John M. Armentrout
John M. Armentrout
Houston, Texas
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Norman C. Rosen
Norman C. Rosen
Houston, Texas
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SEPM Society for Sedimentary Geology
Volume
22
ISBN electronic:
978-0-9836096-8-1
Publication date:
December 01, 2002

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