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An Upper Cretaceous sag pond deposit: Implications for recognition of local seismicity and surface rupture along the Kaibab monocline, Utah

2009; Geological Society of America; Volume: 37; Issue: 11 Linguagem: Inglês

10.1130/g30022a.1

1943-2682

Edward L. Simpson, Michael C. Wizevich, Hannah L. Hilbert‐Wolf, Sarah E. Tindall, Julien Bernard, Wendy S. Simpson,

Geological and Geochemical Analysis

Research Article| November 01, 2009 An Upper Cretaceous sag pond deposit: Implications for recognition of local seismicity and surface rupture along the Kaibab monocline, Utah E.L. Simpson; E.L. Simpson * 1Department of Physical Sciences, Kutztown University of Pennsylvania, Kutztown, Pennsylvania 19530, USA *E-mail address: simpson@kutztown.edu. Search for other works by this author on: GSW Google Scholar M.C. Wizevich; M.C. Wizevich 2Department of Physics and Earth Sciences, Central Connecticut State University, New Britain, Connecticut 06050, USA Search for other works by this author on: GSW Google Scholar H.L. Hilbert-Wolf; H.L. Hilbert-Wolf 3Parkland High School, 2700 North Cedar Crest Boulevard, Allentown, Pennsylvania 18104, USA †Current Address: Carleton College, Northfield, Minnesota 55057, USA. Search for other works by this author on: GSW Google Scholar S.E. Tindall; S.E. Tindall 1Department of Physical Sciences, Kutztown University of Pennsylvania, Kutztown, Pennsylvania 19530, USA Search for other works by this author on: GSW Google Scholar J.J. Bernard; J.J. Bernard 1Department of Physical Sciences, Kutztown University of Pennsylvania, Kutztown, Pennsylvania 19530, USA Search for other works by this author on: GSW Google Scholar W.S. Simpson W.S. Simpson 3Parkland High School, 2700 North Cedar Crest Boulevard, Allentown, Pennsylvania 18104, USA Search for other works by this author on: GSW Google Scholar Author and Article Information E.L. Simpson * 1Department of Physical Sciences, Kutztown University of Pennsylvania, Kutztown, Pennsylvania 19530, USA M.C. Wizevich 2Department of Physics and Earth Sciences, Central Connecticut State University, New Britain, Connecticut 06050, USA H.L. Hilbert-Wolf †Current Address: Carleton College, Northfield, Minnesota 55057, USA. 3Parkland High School, 2700 North Cedar Crest Boulevard, Allentown, Pennsylvania 18104, USA S.E. Tindall 1Department of Physical Sciences, Kutztown University of Pennsylvania, Kutztown, Pennsylvania 19530, USA J.J. Bernard 1Department of Physical Sciences, Kutztown University of Pennsylvania, Kutztown, Pennsylvania 19530, USA W.S. Simpson 3Parkland High School, 2700 North Cedar Crest Boulevard, Allentown, Pennsylvania 18104, USA *E-mail address: simpson@kutztown.edu. Publisher: Geological Society of America Received: 09 Jan 2009 Revision Received: 09 Jun 2009 Accepted: 09 Jun 2009 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2009 Geological Society of America Geology (2009) 37 (11): 967–970. https://doi.org/10.1130/G30022A.1 Article history Received: 09 Jan 2009 Revision Received: 09 Jun 2009 Accepted: 09 Jun 2009 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation E.L. Simpson, M.C. Wizevich, H.L. Hilbert-Wolf, S.E. Tindall, J.J. Bernard, W.S. Simpson; An Upper Cretaceous sag pond deposit: Implications for recognition of local seismicity and surface rupture along the Kaibab monocline, Utah. Geology 2009;; 37 (11): 967–970. doi: https://doi.org/10.1130/G30022A.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 SocietyGeology Search Advanced Search Abstract In the Bull Flat area of Grand Staircase (Escalante National Monument, Utah, United States), sedimentological analysis of the tip line area of a Late Cretaceous normal fault reveals that the fault was active during the deposition and preservation of a sag pond deposit. Sag ponds deposits are probably under-recognized in the rock record, and, as demonstrated in this study, they are helpful in chronicling activity of ancient faults. The sag pond sequence is located just below the contact between the upper and capping sandstone members of the Wahweap Formation, and it occurs within close proximity to other features of seismogenic origin. The sag pond deposit is a 2.2-m-thick succession of carbonaceous, interlaminated mudstones and siltstones intruded by sublithic sandstone seismogenic dikes and sills. At least two seismic events are required to produce the observed sequence. The initial event ruptured the surface, probably tilting the underlying strata, and produced the down-drop for the sag pond. After infilling of the sag pond, a second seismogenic event mobilized sediment in the underlying upper member and generated the dikes and sills that intrude the sag pond deposit. Subsequently, a minor channel scoured the sag pond deposit with flow parallel to the fault trace. Infilling of the sag pond ended before deposition of the capping sandstone member. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.