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Title:Origin, Architecture, and Thermal State of the Lackawanna Synclinorium, Pennsylvania: Implications for Tectonic Evolution of the Central Appalachians
Author(s):Harrison, Michael Joseph
Doctoral Committee Chair(s):Marshak, Stephen
Department / Program:Geology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Abstract:Mapping of the Pittston quadrangle in the central domain and structural analysis elsewhere in the synclinorium reveal that mesoscopic faults, folds, and cleavage throughout the synclinorium trend ∼075°; thus, these structures parallel the southern domain, but trend at high angles to the northern domain. Many of these structures are better developed in the hanging wall of a regional detachment than in the footwall. Crosscutting structures (e.g., cleavage, faults) indicate that the shortening direction rotated ∼45° clockwise during the Alleghanian orogeny. Heat-flow calculations suggest that the migration of hot (∼270°C) brines could have induced anthracitization at shallow depths (≤5 km) in the synclinorium; thus, deep burial (6--9 km) by post-Pennsylvanian strata was not required for anthracitization. Field observations, fluid-inclusion studies, and illite-crystallinity analysis suggest that Alleghanian fluid flow was stratigraphically controlled.
Issue Date:2002
Description:168 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002.
Other Identifier(s):(MiAaPQ)AAI3070319
Date Available in IDEALS:2015-09-28
Date Deposited:2002

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