Portal de Periódicos da CAPES

Evidence for Holocene displacements on the Bootheel fault (lineament) in southeastern Missouri: Seismotectonic implications for the New Madrid region

2005; Geological Society of America; Volume: 117; Issue: 3 Linguagem: Inglês

10.1130/b25435.1

1943-2674

Margaret J. Guccione, Ronald T. Marple, Whitney J. Autin,

Geology and Paleoclimatology Research

Research Article| March 01, 2005 Evidence for Holocene displacements on the Bootheel fault (lineament) in southeastern Missouri: Seismotectonic implications for the New Madrid region Margaret J. Guccione; Margaret J. Guccione 1Department of Geosciences, University of Arkansas, Fayetteville, Arkansas 72701, USA Search for other works by this author on: GSW Google Scholar Ronald Marple; Ronald Marple 21800 El Paseo, #1111, Houston, Texas 77054, USA Search for other works by this author on: GSW Google Scholar Whitney J. Autin Whitney J. Autin 3Department of the Earth Sciences, SUNY College at Brockport, Brockport, New York 14420, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Margaret J. Guccione 1Department of Geosciences, University of Arkansas, Fayetteville, Arkansas 72701, USA Ronald Marple 21800 El Paseo, #1111, Houston, Texas 77054, USA Whitney J. Autin 3Department of the Earth Sciences, SUNY College at Brockport, Brockport, New York 14420, USA Publisher: Geological Society of America Received: 30 Jun 2003 Revision Received: 31 May 2004 Accepted: 10 Jun 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2005) 117 (3-4): 319–333. https://doi.org/10.1130/B25435.1 Article history Received: 30 Jun 2003 Revision Received: 31 May 2004 Accepted: 10 Jun 2004 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Margaret J. Guccione, Ronald Marple, Whitney J. Autin; Evidence for Holocene displacements on the Bootheel fault (lineament) in southeastern Missouri: Seismotectonic implications for the New Madrid region. GSA Bulletin 2005;; 117 (3-4): 319–333. doi: https://doi.org/10.1130/B25435.1 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 The 135-km-long Bootheel lineament is a zone of en echelon, narrow, linear bands of sand blows, oriented N24°E in southeast Missouri and northeast Arkansas within the epicentral area of the 1811–1812 New Madrid earthquakes. Holocene faulting along the central part of the lineament vertically displaced a <10.2-ka-old Pleistocene braid-stream sand ∼3 m and dextrally displaced a ca. 2.4-ka-old Holocene paleochannel at least 13 m. The fault zone is less than 8 m wide where studied in detail. These observations suggest that the Bootheel lineament is a fault, and we therefore suggest that it be renamed the Bootheel fault.The area east of the Bootheel fault in our study area may have been uplifted ∼3 m during at least three Holocene events, perhaps by a compressional pop up at a 1.5-km-wide left-step restraining offset south of the study site. The very low level of instrumental seismicity recorded near the Bootheel fault suggests that it is either locked because of structural complexity, or it is currently inactive. Though the source zones are poorly known, great earthquake sequences in A.D. 1811–1812, A.D. 1450, and A.D. 900 have been identified in the New Madrid seismic zone using the historical record and paleoseismology (Tuttle et al., 2002). Based on the estimated 13 m of horizontal paleochannel displacement, an approximate 2.4 ka paleochannel age, and a mean great earthquake recurrence interval of ∼500 yr (Cramer, 2001; Tuttle et al., 2002), the local mean horizontal slip rate is estimated to be ∼3.5 m per event. When displacement does occur on the Bootheel fault, it may subsequently load other faults, accounting for past earthquake sequences in the New Madrid region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.