Breccia Pipe near Cameron, Arizona

Research Article| November 01, 1961 Breccia Pipe near Cameron, Arizona JONATHAN BARRINGTON; JONATHAN BARRINGTON E. I. duPont deNemours and Company, Gibbstown, N. J Search for other works by this author on: GSW Google Scholar PAUL F KERR PAUL F KERR Dept. Geology, Columbia University, New York, N. Y Search for other works by this author on: GSW Google Scholar Author and Article Information JONATHAN BARRINGTON E. I. duPont deNemours and Company, Gibbstown, N. J PAUL F KERR Dept. Geology, Columbia University, New York, N. Y Publisher: Geological Society of America Received: 08 Mar 1960 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1961, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1961) 72 (11): 1661–1674. https://doi.org/10.1130/0016-7606(1961)72[1661:BPNCA]2.0.CO;2 Article history Received: 08 Mar 1960 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation JONATHAN BARRINGTON, PAUL F KERR; Breccia Pipe near Cameron, Arizona. GSA Bulletin 1961;; 72 (11): 1661–1674. doi: https://doi.org/10.1130/0016-7606(1961)72[1661:BPNCA]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 SocietyGSA Bulletin Search Advanced Search Abstract Black Peak protrudes above a tableland of Navajo Sandstone on the Colorado Plateau just east of Echo Cliffs and 30 miles north of Cameron, Arizona. A breccia pipe on the west slope of the butte locally contains breccia fragments of sandstone, mudstone, shale, and altered dike rock believed to have been plucked from wall rocks and transported upward. Sources of uranium mineralization in the Cameron area may be inferred from the origin of the pipe.A vesicular, silicified collar several feet thick encloses the pipe on three sides. Minute micro-acicular quartz overgrowths on quartz crystals in the wall rock suggest that explosive penetration of superheated steam formed the pipe. Irregularly distributed argillic alteration, silicification, and mineralization suggest subsequent hydrothermal activity.Associated with the pipe are carbonates, alunite, gold, silver, iron, manganese, and possibly uranium and copper. Silica has been introduced in the largest quantities.The butte was probably formed by vertical penetration by fluids of magmatic origin from below; this suggests a possible original source and one phase in the mechanism of introduction of mineralization in the Cameron area. 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.