Deep magmatic structures of Hawaiian volcanoes, imaged by three-dimensional gravity models

Abstract

Research Article| October 01, 2000 Deep magmatic structures of Hawaiian volcanoes, imaged by three-dimensional gravity models Jim Kauahikaua; Jim Kauahikaua 1U.S. Geological Survey, Hawaii National Park, Hawaii 96718, USA Search for other works by this author on: GSW Google Scholar Tom Hildenbrand; Tom Hildenbrand 2U.S. Geological Survey, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Mike Webring Mike Webring 3U.S. Geological Survey, Denver, Colorado 80225, USA Search for other works by this author on: GSW Google Scholar Geology (2000) 28 (10): 883–886. https://doi.org/10.1130/0091-7613(2000)28<883:DMSOHV>2.0.CO;2 Article history received: 14 Feb 2000 rev-recd: 20 Jun 2000 accepted: 14 Jul 2000 first online: 02 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 Jim Kauahikaua, Tom Hildenbrand, Mike Webring; Deep magmatic structures of Hawaiian volcanoes, imaged by three-dimensional gravity models. Geology 2000;; 28 (10): 883–886. doi: https://doi.org/10.1130/0091-7613(2000)28<883:DMSOHV>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 SocietyGeology Search Advanced Search Abstract A simplified three-dimensional model for the island of Hawai'i, based on 3300 gravity measurements, provides new insights on magma pathways within the basaltic volcanoes. Gravity anomalies define dense cumulates and intrusions beneath the summits and known rift zones of every volcano. Linear gravity anomalies project southeast from Kohala and Mauna Kea summits and south from Hualālai and Mauna Loa; these presumably express dense cores of previously unrecognized rift zones lacking surface expression. The gravity-modeled dense cores probably define tholeiitic shield–stage structures of the older volcanoes that are now veneered by late alkalic lavas. The three-dimensional gravity method is valuable for characterizing the magmatic systems of basaltic oceanic volcanoes and for defining structures related to landslide and seismic hazards. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.