Kattenhorn, S.A. (1994)

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Outcrop-scale fault-related folds, Valley and Ridge Province, Appalachians: Comparison to kinematic model predictions.


MS thesis, University of Akron, Akron, Ohio, U.S.A.

Conventional kinematic models of fault-related folds predict fold shape from thrust ramp angle. However, these kinematic models often fail to account for certain aspects of fault-related folds, such as footwall folding. In addition, conventional model assumptions are not consistent with measured displacement distributions along some natural faults. Displacement distributions are an important part of fault-related fold interpretation, yet are frequently ignored in discussions of kinematic models. The shape of a displacement-distance graph reflects the history of fault growth. Cone-shaped (C-type) graphs generated from natural structures suggest ramp-nucleated faults. Models that assume fault growth away from a lower flat do not apply in such instances. Possible modes of fault-propagation fold evolution are described that assume ramp-nucleated faults. Low propagation rate to slip rate (PR/SR) ratios promote fold growth ahead of upper and lower fault tips, with resultant fold geometries that are consistent with natural examples and previous models, with the additional requisite of accounting for footwall folding and displacement distributions.


Entire thesis available online here


Comments



The above abstract is taken from my M.S. thesis. The research was performed while I was in the Masters program in the Department of Geology at the University of Akron, Ohio, between August 1992 and May 1994.




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Citations:


This thesis has been cited in the following 4 works:


Koyi, H.A., Maillot, B., 2007. Tectonic thickening of hanging-wall units over a ramp. JOURNAL OF STRUCTURAL GEOLOGY 29 (6): 924-932.

Kattenhorn, S.A., Pollard, D.D., 2001. Integrating 3-D seismic data, field analogs, and mechanical models in the analysis of segmented normal faults in the Wytch Farm oil field, southern England, United Kingdom. AAPG BULLETIN 85 (7): 1183-1210.

Kattenhorn, S.A., Pollard, D.D., 1999. Is lithostatic loading important for the slip behavior and evolution of normal faults in the Earth's crust? JOURNAL OF GEOPHYSICAL RESEARCH 104: 28,879-28,898.

Cooke, M.L., Pollard, D.D., 1997. Bedding-plane slip in initial stages of fault-related folding. JOURNAL OF STRUCTURAL GEOLOGY 19: 567-581.


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