Studies in Continental Margin Geology
"Studies in Continental Margin Geology" contains papers from a research conference co-sponsored by AAPG and the University of Texas Institute for Geophysics held in Galveston, Texas in 1981. Rapid advances in the understanding of continental margin geology were taking place during the time period, based on major improvements in the quality and availability of regional seismic surveys plus other fields such as organic geochemistry. For the first time it was becoming common to have a visual characterization of tectonic processes at significant depths below the surface. Twenty-seven papers are presented that deal with field investigations of continental margin structure and stratigraphy. The geographic areas of study are global in nature and many of the descriptive results are derived from modern seismic investigations in areas where that type of data had not previously been available in commercial publications. Fifteen of the papers focus on rifted margins and the other twelve concern convergent margins. Twelve papers are model investigations of a variety of margin environmental processes, related to subjects such as depositional environments, biostratigraphy, organic matter deposition, and oil and gas occurrences as a function of the plate tectonic setting. An additional nine papers model the thermal and mechanical tectonic processes involved in the structural development along continental margins.
Thermal Evolution of the Baltimore Canyon Trough and Georges Bank Basin
Published:January 01, 1982
D. S. Sawyer, M. N. Toksöz, J. G. Sclater, B. A. Swift, 1982. "Thermal Evolution of the Baltimore Canyon Trough and Georges Bank Basin", Studies in Continental Margin Geology, J. S. Watkins, C. L. Drake
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A simple, one-dimensional extensional model can explain the major features of the northeastern United States Atlantic continental margin. The extensional model allows us to predict the subsidence history of the margin and we compare that prediction with well data. Tectonic-subsidence observations indicate that the COST B-2 and B-3 wells are over highly thinned continental or oceanic crust, while the G-1 and G-2 wells are over continental crust that experienced less thinning.
A two-dimensional finite difference numerical scheme for simulating the thermal and mechanical evolution of a basin supports an extensional origin for the Baltimore Canyon trough. The simulation provides...