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- W12962812 abstract "The Gettysburg rift basin is a complexly faulted half-graben with strata dipping 25–30° NW toward a northeast-trending normal border fault. Within the basin are an estimated 5000 m of Late Triassic to Early Jurassic dominantly fluvial red beds and minor lacustrine beds including dark gray to black shales. Major basin faulting, folding, rotation, and igneous activity, principally as diabase sheets, occurred concurrently, subsequent to deposition — possibly in the Toarcian. Within the basin inliers of Paleozoic basement, surrounded by Triassic strata, confirm gravity data showing the deepest part of the basin toward the basin center. This is explained by a listric border fault. Normal faults, subparallel to the main border fault occur within and adjacent to the basin. Extensional tectonics is the dominant structural mode. At two localities the basin intersects at large angles older faults and in both instances wrenching and local folding develop. Hydrocarbon potential of the basin is not promising. Potential fold traps are small, with closure and persistence at depth questionable. Lenticular sandstones may be stratigraphic traps. Lacustrine shale organic geochemistry indicates lean source rocks (TOC average 0.52%) and basinal overmaturity (S2 = < 0.02 mg g-1 and Ro = 1.5–3.0%). Accumulations of oil or gas in such a setting will be small." @default.
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- W12962812 date "1988-01-01" @default.
- W12962812 modified "2023-09-26" @default.
- W12962812 title "Structure and hydrocarbon potential of the Gettysburg basin, Pennsylvania and Maryland" @default.
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- W12962812 doi "https://doi.org/10.1016/b978-0-444-42903-2.50019-1" @default.
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