Sherwin Till–Bishop Tuff Geological Relationships, Sierra Nevada, California

Research Article| March 01, 1968 Sherwin Till–Bishop Tuff Geological Relationships, Sierra Nevada, California ROBERT P SHARP ROBERT P SHARP Division of Geological Sciences, California Institute of Technology, Pasadena, California Search for other works by this author on: GSW Google Scholar GSA Bulletin (1968) 79 (3): 351–364. https://doi.org/10.1130/0016-7606(1968)79[351:STTGRS]2.0.CO;2 Article history received: 27 Dec 1966 rev-recd: 21 Feb 1967 first online: 02 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 ROBERT P SHARP; Sherwin Till–Bishop Tuff Geological Relationships, Sierra Nevada, California. GSA Bulletin 1968;; 79 (3): 351–364. doi: https://doi.org/10.1130/0016-7606(1968)79[351:STTGRS]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 A glacial till underlies the Bishop tuff, but it has not been established heretofore on firm geological bases that this is the Sherwin till. Relationships here described demonstrate that the till beneath the Bishop tuff is indeed Blackwelder's-type Sherwin.Radiometric datings of the basal pumice of the Bishop tuff by Dalrymple and others yield an age of 710,000 years. Judging from pre-pumice weathering, the till may be still older, perhaps 750,000 years. These considerations make the Sherwin till-Bishop tuff relationship an important reference datum in the continental Pleistocene sequence of North America. 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.