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Abstract
Chapter from: M
65: Salt Tectonics: A Global Perspective
Edited By
M.P.A. Jackson, D.G. Roberts, and S. SnelsonAuthors:
Robert J. Hooper and Colin More Structure, Tectonics, Paleostructure
Published 1995 as
part of Memoir 65
Copyright © 1995 The American Association of Petroleum
Geologists. All Rights Reserved.
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Hooper,
R. J., and C. More, 1995, Evaluation of salt-related overburden structures
in the U.K. southern North Sea, in M. P. A. Jackson, D. G. Roberts,
and S. Snelson, eds., Salt tectonics: a global perspective: AAPG Memoir
65, p. 251-259. |
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Chapter
11
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Evaluation
of Some Salt-Related Overburden Structures in the U.K. Southern North Sea |
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| Robert J.
Hooper
Conoco Inc., Geoscience
Resources-Houston
Houston, Texas, U.S.A.
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Colin More
Conoco (U.K.) Limited
Aberdeen, U.K. |
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Abstract
Interpretation
of recently acquired high-resolution three-dimensional seismic data has
been combined with two-dimensional cross-section restorations and new insights
into salt tectonics derived from scaled physical and numerical models.
This prompted a reevaluation of the development of salt-related structures
in our areas of interest in the U.K. Southern Gas Basin. Salt-related structures
in the overburden comprise a series of broadly northwest-trending grabens
and associated salt diapirs and walls. These structures are considered
to be caused by thin-skinned gravity-driven deformation that triggered
and controlled the growth of grabens and diapirs and the later inversion
of selected grabens. Additional structures were created by bending and
by vertical movements associated with extensionally driven diapiric collapse.
The development of the overburden structure was not driven by salt movement;
salt structures developed as a simple "reaction" to the thin-skinned extension
and subsequent contraction of the overburden. |
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