Structural geometry of Meade thrust plate in northern Blackfoot Mountains, southeastern Idaho
Journal Article
·
· Am. Assoc. Pet. Geol. Bull.; (United States)
OSTI ID:6324344
One of the principal generalizations concerning structural geology in foreland thrust belts is that thrust faults climb to the surface by running parallel with incompetent units and cutting upsection (ramping) across competent members, thus forming folds in the hanging wall but not in the footwall. Detailed geologic mapping at the front of the Meade plate in the northern Blackfoot Mountains, southeastern Idaho, shows that this rule can be applied only to the initial phase of deformation. The initial forms of folds created over ramps in the basal decollement have strongly influenced the geometry of subsequent imbricate thrusts within the Meade plate so that later faults were locally required to cut downsection in the direction of translation.
- Research Organization:
- Cornell Univ., Ithaca, NY
- OSTI ID:
- 6324344
- Journal Information:
- Am. Assoc. Pet. Geol. Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol. Bull.; (United States) Vol. 65:3; ISSN AAPGB
- Country of Publication:
- United States
- Language:
- English
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