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Geophysical investigation of the structural framework of the Newark-Gettysburg Triassic basin, Pennsylvania

1977; Geological Society of America; Volume: 88; Issue: 7 Linguagem: Inglês

10.1130/0016-7606(1977)88 2.0.co;2

1943-2674

John R. Sumner,

Seismic Waves and Analysis

Research Article| July 01, 1977 Geophysical investigation of the structural framework of the Newark-Gettysburg Triassic basin, Pennsylvania JOHN RANDOLPH SUMNER JOHN RANDOLPH SUMNER 1Department of Geological Sciences, Lehigh University, Bethlehem, Pennsylvania 18015 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1977) 88 (7): 935–942. https://doi.org/10.1130/0016-7606(1977)88 2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JOHN RANDOLPH SUMNER; Geophysical investigation of the structural framework of the Newark-Gettysburg Triassic basin, Pennsylvania. GSA Bulletin 1977;; 88 (7): 935–942. doi: https://doi.org/10.1130/0016-7606(1977)88 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract A residual gravity map of the Newark-Gettysburg Triassic basin has been constructed using approximately 5,000 gravity stations that are nominally 1 to 5 km apart. In a general way, the map shows gravity lows over Triassic sedimentary rocks and gravity highs over Triassic diabase bodies and pre-Triassic rocks that flank the basin. Steep gravity gradients within the basin, but near the margins, are interpreted to be due to vertical offset on faults within the basin. The presence of these presumed faults along parts of the southern margin indicates that the basin is not a simple half-graben, but is internally faulted, with irregular sediment thicknesses. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.