Abstract
Research Article| July 01, 1989 South Arch volcanic field—Newly identified young lava flows on the sea floor south of the Hawaiian Ridge Peter W. Lipman; Peter W. Lipman 1U.S. Geological Survey, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar David A. Clague; David A. Clague 2U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar James G. Moore; James G. Moore 2U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Robin T. Holcomb Robin T. Holcomb 3U.S. Geological Survey, Seattle, Washington 98195 Search for other works by this author on: GSW Google Scholar Geology (1989) 17 (7): 611–614. https://doi.org/10.1130/0091-7613(1989)017<0611:SAVFNI>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Peter W. Lipman, David A. Clague, James G. Moore, Robin T. Holcomb; South Arch volcanic field—Newly identified young lava flows on the sea floor south of the Hawaiian Ridge. Geology 1989;; 17 (7): 611–614. doi: https://doi.org/10.1130/0091-7613(1989)017<0611:SAVFNI>2.3.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 SocietyGeology Search Advanced Search Abstract Several young lava fields were imaged by GLORIA sidescan sonar along the Hawaiian Arch south of Hawaii. The largest, 35 by 50 km across, includes a central area characterized by high sonar backscatter and composed of several flow lobes radiating from a vent area. Reflection profiling and sea-floor photography indicate that the central lobes are flat sheet flowsbounded by pillowed margins; thin surface sediment and thin palagonite rinds on lava surfaces suggest ages of 1-10 ka. Vents are localized along the arch crest near bases of Cretaceous seamounts. Two dredged flows are basanite and alkalic basalt, broadly similar to rejuvenated-stage and some pre-shield alkalic lavas on the Hawaiian Ridge. Arch volcanism representsperipheral leakage of melt from the Hawaiian hot spot over much larger areas than previously recognized. 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.
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