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dc.contributor.advisor Anderson, John B.
dc.creatorSmyth, Wendy Clifton
dc.date.accessioned 2009-06-03T23:56:38Z
dc.date.available 2009-06-03T23:56:38Z
dc.date.issued 1991
dc.identifier.urihttps://hdl.handle.net/1911/13511
dc.description.abstract The history of the incised river valley underlying Galveston Bay was determined by examining the distribution of depositional units and the relationships between them. Initial incision of the valley occurred after the previous interglacial stage 5, substage 5e sea level highstand (120 ka, +6m relative to today). Fluvial terraces, present within the incised valley, were left behind by this incision and by subsequent 20 ky sea level cycles. These terrace deposits are bound by sequence boundary unconformities associated with falling sea level, which ultimately fell to 120m below its present level, approximately 18-20 ka. The sediments within the incised valley are associated with the Holocene rise in sea level. They consist of aggradational fluvial deposits overlain by marsh and estuarine sediments. Initial flooding of the estuary occurred 8-10 ka. Maximum flooding occurred at 4 ka. These events appear to represent rapid flooding.
dc.format.extent 190 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectGeology
dc.title Seismic facies analysis and depositional history of an incised valley system, Galveston Bay area, Texas
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Earth Science
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.identifier.citation Smyth, Wendy Clifton. "Seismic facies analysis and depositional history of an incised valley system, Galveston Bay area, Texas." (1991) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13511.


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