Diapiric origin of the Blytheville and Pascola arches in the Reelfoot rift, east-central United States: Relation to New Madrid seismicity

Abstract

Research Article| November 01, 1990 Diapiric origin of the Blytheville and Pascola arches in the Reelfoot rift, east-central United States: Relation to New Madrid seismicity F. A. McKeown; F. A. McKeown 1U.S. Geological Survey, Box 25046, MS 966, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar R. M. Hamilton; R. M. Hamilton 2U.S. Geological Survey, 922 National Center, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar S. F. Diehl; S. F. Diehl 1U.S. Geological Survey, Box 25046, MS 966, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar E. E. Glick E. E. Glick 1U.S. Geological Survey, Box 25046, MS 966, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Geology (1990) 18 (11): 1158–1162. https://doi.org/10.1130/0091-7613(1990)018<1158:DOOTBA>2.3.CO;2 Article history first online: 02 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 F. A. McKeown, R. M. Hamilton, S. F. Diehl, E. E. Glick; Diapiric origin of the Blytheville and Pascola arches in the Reelfoot rift, east-central United States: Relation to New Madrid seismicity. Geology 1990;; 18 (11): 1158–1162. doi: https://doi.org/10.1130/0091-7613(1990)018<1158:DOOTBA>2.3.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 Most of the earthquakes in the New Madrid seismic zone correlate spatially with the Blytheville arch and part of the Pascola arch, which are interpreted to be the same structure. Both arches may have formed by diapirism along the axis of the Reeffoot rift. Seismic, geophys ical, and drill-hole data indicate that the rocks in the arches are highly deformed and fractured and have gross lithologic properties that make them weaker than rocks adjacent to the arches. The weaker rocks are inferred to fail seismically more readily than the stronger rocks adjacent to the arches. 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.