Title: Holocene volcanism of the upper McKenzie River catchment, central Oregon Cascades, USA
Abstract: Research Article| November 01, 2016 Holocene volcanism of the upper McKenzie River catchment, central Oregon Cascades, USA Natalia I. Deligne; Natalia I. Deligne 1Department of Geological Sciences, 1272 University of Oregon, Eugene, Oregon 97403, USA †Present address: GNS Science, P.O. Box 30368, Lower Hutt 5040, New Zealand; [email protected]. Search for other works by this author on: GSW Google Scholar Richard M. Conrey; Richard M. Conrey 2School of the Environment, Washington State University, Box 642812, Pullman, Washington 99164, USA §Present address: Department of Geosciences, 198 College Hill Road, Hamilton College, Clinton, New York 13323, USA. Search for other works by this author on: GSW Google Scholar Katharine V. Cashman; Katharine V. Cashman 1Department of Geological Sciences, 1272 University of Oregon, Eugene, Oregon 97403, USA #Present address: Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queen’s Road, Clifton, Bristol, BS8 1RJ, UK. Search for other works by this author on: GSW Google Scholar Duane E. Champion; Duane E. Champion 3U.S. Geological Survey, Volcano Science Center, MS 910, 345 Middlefield Road, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar William H. Amidon William H. Amidon 4Geology Department, Middlebury College, McCardell Bicentennial Hall, Middlebury, Vermont 05753, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2016) 128 (11-12): 1618–1635. https://doi.org/10.1130/B31405.1 Article history received: 11 Aug 2015 rev-recd: 01 Mar 2016 accepted: 18 Apr 2016 first online: 23 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Natalia I. Deligne, Richard M. Conrey, Katharine V. Cashman, Duane E. Champion, William H. Amidon; Holocene volcanism of the upper McKenzie River catchment, central Oregon Cascades, USA. GSA Bulletin 2016;; 128 (11-12): 1618–1635. doi: https://doi.org/10.1130/B31405.1 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 SocietyGSA Bulletin Search Advanced Search Abstract To assess the complexity of eruptive activity within mafic volcanic fields, we present a detailed geologic investigation of Holocene volcanism in the upper McKenzie River catchment in the central Oregon Cascades, United States. We focus on the Sand Mountain volcanic field, which covers 76 km2 and consists of 23 vents, associated tephra deposits, and lava fields. We find that the Sand Mountain volcanic field was active for a few decades around 3 ka and involved at least 13 eruptive units. Despite the small total volume erupted (∼1 km3 dense rock equivalent [DRE]), Sand Mountain volcanic field lava geochemistry indicates that erupted magmas were derived from at least two, and likely three, different magma sources. Single units erupted from one or more vents, and field data provide evidence of both vent migration and reoccupation. Overall, our study shows that mafic volcanism was clustered in space and time, involved both explosive and effusive behavior, and tapped several magma sources. These observations provide important insights on possible future hazards from mafic volcanism in the central Oregon Cascades. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2016
Publication Date: 2016-05-11
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 15
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