Early Proterozoic Central Plains orogen: A major buried structure in the north-central United States

Research Article| June 01, 1986 Early Proterozoic Central Plains orogen: A major buried structure in the north-central United States P. K. Sims; P. K. Sims 1U.S. Geological Survey, Federal Center, MS 912, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Z. E. Petermar Z. E. Petermar 1U.S. Geological Survey, Federal Center, MS 912, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Geology (1986) 14 (6): 488–491. https://doi.org/10.1130/0091-7613(1986)14<488:EPCPOA>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation P. K. Sims, Z. E. Petermar; Early Proterozoic Central Plains orogen: A major buried structure in the north-central United States. Geology 1986;; 14 (6): 488–491. doi: https://doi.org/10.1130/0091-7613(1986)14<488:EPCPOA>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 A major early Proterozoic orogen (Central Plains) more than 1000 km long and at least 500 km wide has been delineated in the subsurface of Nebraska, Kansas, and Missouri as a result of a new compilation of Precambrian basement drill data in the northern midcontinent. The orogen is composed of metamorphic and granitoid rocks in the ringe 1.63–1.80 Ga, and it is interpreted on the basis of isotopic ages, rock types, and structure—as reflected by magnetic and gravity anomalies—as being the eastward extension of the early Proterozoic foldbelt exposed in basement uplifts in Colorado and southeastern Wyoming. It truncates the southern margin of the Superior Archean craton and its marginal early Proterozoic orogens, the Penokean (1.83–1.90 Ga) and the Trans-Hudson (1.85–1.95 Ga). The pattern of intersecting Proterozoic mobile belts marginal to Archean cratons is comparable to that in other continents, such as Western Australia and southern Africa. 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.