Research Article| January 01, 1977 Distribution, correlation, and radiocarbon dating of late Holocene tephra, Mono and Inyo craters, eastern California SPENCER H. WOOD SPENCER H. WOOD 1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91109 Search for other works by this author on: GSW Google Scholar Author and Article Information SPENCER H. WOOD 1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91109 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1977) 88 (1): 89–95. https://doi.org/10.1130/0016-7606(1977)88<89:DCARDO>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation SPENCER H. WOOD; Distribution, correlation, and radiocarbon dating of late Holocene tephra, Mono and Inyo craters, eastern California. GSA Bulletin 1977;; 88 (1): 89–95. doi: https://doi.org/10.1130/0016-7606(1977)88<89:DCARDO>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 Two pumiceous tephra layers, widespread in meadow topsoils of the southern Sierra Nevada, are correlated on the basis of radiocarbon dates and trace-element analyses with two eruptive centers at the northern and southern ends of the Mono Craters—Inyo craters volcanic chain in eastern California. Pumice and obsidian that were erupted in the northern part of the chain are uniform in trace-element content, whereas those erupted from the southern part are nonuniform and distinctly different, particularly in Sr content. Similar differences are recognized in the two most recent and widespread tephra layers originating from these sites. These tephra layers are the deposits of the most recent explosive eruptions of magma from the Mono Craters and the Inyo craters.Tephra 1, characterized by sanidine microphenocrysts and a Sr content of about 215 ppm, was erupted 720 ± 60 yr B.P. Its distribution defines a south-trending lobe extending over the Sierra Nevada from the upper San Joaquin drainage area to the Little Kern drainage area. Sr, Rb, and Zr contents of the ash are similar to those of a tephra-ringed obsidian dome at the south end of the Inyo craters.Tephra 2, characterized by a lack of microphenocrysts and a Sr content of less than 20 ppm, was erupted 1190 ± 80 yr B.P. It is encountered as a fine ash layer in the Sierra Nevada from northernmost Yosemite to Kings Canyon. Its low Sr content indicates geochemical affinity with the Mono Craters. Panum Crater, a tephra-ringed dome at the north end of the chain, appears to be its most likely source vent. 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.
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Spencer H. Wood (1977) studied this question.