Silver Creek caldera—The tectonically dismembered source of the Peach Spring Tuff

Abstract

Research Article| January 01, 2013 Silver Creek caldera—The tectonically dismembered source of the Peach Spring Tuff Charles A. Ferguson; Charles A. Ferguson * 1Arizona Geological Survey, 416 West Congress, Suite 100, Tucson, Arizona 85719, USA *E-mails: caf@email.arizona.edu; mcintosh@nmt.edu; calvin.miller@vanderbilt.edu. Search for other works by this author on: GSW Google Scholar William C. McIntosh; William C. McIntosh * 2New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, New Mexico 87801, USA *E-mails: caf@email.arizona.edu; mcintosh@nmt.edu; calvin.miller@vanderbilt.edu. Search for other works by this author on: GSW Google Scholar Calvin F. Miller Calvin F. Miller * 3Vanderbilt University, 2301 Vanderbilt Place, Station B 35-1805, Nashville, Tennessee 37235-1805, USA *E-mails: caf@email.arizona.edu; mcintosh@nmt.edu; calvin.miller@vanderbilt.edu. Search for other works by this author on: GSW Google Scholar Author and Article Information Charles A. Ferguson * 1Arizona Geological Survey, 416 West Congress, Suite 100, Tucson, Arizona 85719, USA William C. McIntosh * 2New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, New Mexico 87801, USA Calvin F. Miller * 3Vanderbilt University, 2301 Vanderbilt Place, Station B 35-1805, Nashville, Tennessee 37235-1805, USA *E-mails: caf@email.arizona.edu; mcintosh@nmt.edu; calvin.miller@vanderbilt.edu. Publisher: Geological Society of America Received: 22 Apr 2012 Accepted: 07 Jun 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2012 Geological Society of America Geology (2013) 41 (1): 3–6. https://doi.org/10.1130/G33551.1 Article history Received: 22 Apr 2012 Accepted: 07 Jun 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Charles A. Ferguson, William C. McIntosh, Calvin F. Miller; Silver Creek caldera—The tectonically dismembered source of the Peach Spring Tuff. Geology 2013;; 41 (1): 3–6. doi: https://doi.org/10.1130/G33551.1 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 Sanidine 40Ar/39Ar geochronology confirms that Silver Creek caldera, which straddles the eastern edge of the Colorado River extensional corridor near Oatman, Arizona (United States), is the source of the Peach Spring Tuff. Eight new dates (five from outflow, three from caldera fill) are analytically indistinguishable, and combined with the most precise previously published date give a weighted mean average age of 18.78 ± 0.02 Ma. A fragment of the caldera identified in the midst of the extensional corridor is structurally juxtaposed with mesozonal plutons of identical age. The implied extension direction (182°–225°) is compatible with abundant previously published structural data for the region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.