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Rift structure beneath the Michigan Basin from COCORP profiling

1982; Geological Society of America; Volume: 10; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1982)10 2.0.co;2

1943-2682

Larry R. Brown, L.N. Jensen, J. E. Oliver, S. Kaufman, Deb Steiner,

Hydraulic Fracturing and Reservoir Analysis

Research Article| December 01, 1982 Rift structure beneath the Michigan Basin from COCORP profiling L. Brown; L. Brown 1Department of Geological Sciences, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar L. Jensen; L. Jensen 1Department of Geological Sciences, Cornell University, Ithaca, New York 148532Present addresses: (Jensen) Continental Oil Company, Houston, Texas 77046; (Steiner) Phillips Petroleum Company, Bartlesville, Oklahoma 74004 Search for other works by this author on: GSW Google Scholar J. Oliver; J. Oliver 1Department of Geological Sciences, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar S. Kaufman; S. Kaufman 1Department of Geological Sciences, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar D. Steiner D. Steiner 1Department of Geological Sciences, Cornell University, Ithaca, New York 148532Present addresses: (Jensen) Continental Oil Company, Houston, Texas 77046; (Steiner) Phillips Petroleum Company, Bartlesville, Oklahoma 74004 Search for other works by this author on: GSW Google Scholar Author and Article Information L. Brown 1Department of Geological Sciences, Cornell University, Ithaca, New York 14853 L. Jensen 1Department of Geological Sciences, Cornell University, Ithaca, New York 148532Present addresses: (Jensen) Continental Oil Company, Houston, Texas 77046; (Steiner) Phillips Petroleum Company, Bartlesville, Oklahoma 74004 J. Oliver 1Department of Geological Sciences, Cornell University, Ithaca, New York 14853 S. Kaufman 1Department of Geological Sciences, Cornell University, Ithaca, New York 14853 D. Steiner 1Department of Geological Sciences, Cornell University, Ithaca, New York 148532Present addresses: (Jensen) Continental Oil Company, Houston, Texas 77046; (Steiner) Phillips Petroleum Company, Bartlesville, Oklahoma 74004 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1982) 10 (12): 645–649. https://doi.org/10.1130/0091-7613(1982)10 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 L. Brown, L. Jensen, J. Oliver, S. Kaufman, D. Steiner; Rift structure beneath the Michigan Basin from COCORP profiling. Geology 1982;; 10 (12): 645–649. doi: https://doi.org/10.1130/0091-7613(1982)10 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 SocietyGeology Search Advanced Search Abstract COCORP (Consortium for Continental Reflection Profiling) surveys across the mid-Michigan gravity anomaly, near the McClure-Sparks No. 1 deep well, delineate a thick layered sequence of relatively strong reflectors that define a structural trough within the Precambrian beneath the Michigan Basin. These deep reflections, which correlate spatially with the mid-Michigan gravity and magnetic high, are interpreted to be a pile of basaltic extrusive rocks intercalated with clastic rocks and correlative with Keweenawan volcanics exposed in the Lake Superior region to the northwest. A reflection-poor zone between the base of the Paleozoic, as found in the deep well, and the top of the deep layered sequence probably corresponds to the upper Keweenawan clastic assemblage. Direct evidence of faulting within the inferred volcanic sequence is lacking, although sharp flexures, structural benches, and dips of as much as 10° suggest subsidence controlled by fault-block motions. Reflections from beneath the inferred volcanic pile are rare, the deepest clear event being at about 18 km. There is no unequivocal evidence on these sections to indicate whether Precambrian structures were reactivated to affect the overlying Paleozoic strata of the Michigan Basin proper, although data quality may be insufficient to detect such effects. 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.