Tertiary Gulf Coast Salt Diapirism and Growth Faulting Interaction
1984. "Tertiary Gulf Coast Salt Diapirism and Growth Faulting Interaction", Structural and Depositional Styles of Gulf Coast Tertiary Continental Margins: Application to Hydrocarbon Exploration, Martin P.A. Jackson, William E. Galloway
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In the Houston salt diapir province (for locations of this and other areas described here, see unit 29) salt diapirism dominates the structural style so much that prediapiric structures have been distorted to the point of obscurity. But the growth-fault trend prominent to the southwest is still recognizable on isopach maps in the salt diapir province.
This area provides an example of the process whereby a distal zone of growing diapirs is overridden by a zone of growth faults being carried along a prograding margin. Continued rise of the diapirs deforms the growth faults. The faults may be migration paths for hydrocarbons, and fault-related traps can be distorted by salt diapirism so that hydrocarbons are redistributed or leaked in the second phase of deformation. Because of their depth and complexity, the geometry of these traps is little known and little understood, but they are likely to contain substantial reserves of geopressured gas.
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Structural and Depositional Styles of Gulf Coast Tertiary Continental Margins: Application to Hydrocarbon Exploration
The structure and genetic stratigraphy of the Gulf of Mexico continental margin are inextricably intertwined. As hydrocarbon exploration and exploitation advance into the deeply buried Tertiary basin fill, interpretation of the complex depositional and structural styles of the outer shelf and upper slope setting will increasingly challenge the interpreter. This publication provides a coherent summary of the key concepts, models, and tools that are needed to meet this exploration challenge, and includes chapters on: basic principles, submarine slope systems, models of growth faults, mechanics of diapir growth, petroleum traps, and techniques on analyzing normal faults and balancing cross sections with extended strata.