Effects of inherited pre-Jurassic tectonics on Gulf Coast
Conference
·
· AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
OSTI ID:6377318
Extensional and compressional tectonic features from the Canadian shield to the Gulf Coast reflect repeated and continued movement of crustal elements along northwest-southeast paths. Resultant rift and thrust features formed perpendicular to that orientation. Cycles of ocean opening (rifting), quiescence, and ocean closure (thrusting) controlled the structural style and stratigraphic sequences that recorded the accretion of much of the North American craton onto the Canadian shield. The Triassic separation of North America from South America resulted in an irregular fragmented arc that now extends from Central America to southern Florida. Stranded blocks of continental crust, left behind when spreading centers jumped during rifting, control the location of major basins over the attenuated crust between the blocks. The former location of the Yucatan Peninsula is now marked by the salt dome basins of central Mississippi, southern Louisiana, and southeastern Texas. Postrifting tectonic patterns retain an inherited fabric reflecting the Triassic rifting. Triassic horsts, grabens, and half grabens localized and delineated later microbasins. The term microbasin is a limited area of deposition whose boundaries reflect, or can be presumed to reflect, buried basement-related faulting.
- Research Organization:
- Mitchell Energy Corp., The Woodlands, TX (USA)
- OSTI ID:
- 6377318
- Report Number(s):
- CONF-890404-
- Conference Information:
- Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Journal Volume: 73:3
- Country of Publication:
- United States
- Language:
- English
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