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oai:www.ideals.illinois.edu:2142/86522 2023-07-11 col_2142_5131 col_2142_16322 com_2142_5130 com_2142_16321 com_2142_13459 com_2142_8903

Marshak, Stephen Harrison, Michael Joseph 2015-09-28T15:12:27Z 2015-09-28T15:12:27Z 10000-01-01 2002 2002 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. Made available in DSpace on 2015-09-28T15:12:27Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3070319.pdf: 10463576 bytes, checksum: ae947d4945b60cef0155dafca531f8da (MD5) Previous issue date: 2002 Embargo set by: Seth Robbins for item 87803 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 168 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002. http://hdl.handle.net/2142/86522 (MiAaPQ)AAI3070319 eng Geology Origin, Architecture, and Thermal State of the Lackawanna Synclinorium, Pennsylvania: Implications for Tectonic Evolution of the Central Appalachians text Geology Geology University of Illinois at Urbana-Champaign Dissertation Ph.D.