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125 Years of Science for America - 1879 to 2004
U.S. Geological Survey
Open-File Report 2004-1378
Version 1.0

Major-Element, Sulfur, and Chlorine Compositions of Glasses from the Submarine Flank of Kilauea Volcano, Hawaii, Collected During 1998-2002 Japan Marine Science and Technology Center (JAMSTEC) Cruises

By Michelle L. Coombs, Thomas W. Sisson, and Peter W. Lipman


index map, about 85 kilometers wide showing Mauna Kea in the upper right and the coast across the lower left with the Kilauea East Rift Zone between them.

From 1998 to 2002, four cruises by Japan Marine Science and Technology Center (JAMSTEC) research vessels explored the submarine flanks of the Hawaiian Islands. This collaborative Japan-USA research program resulted in new multibeam mapping of the seafloor around Hawai‘i, and seafloor observation and sample collection during 53 manned submersible and 25 remotely-operated vehicle (ROV) dives. In this report, we present major element, S, and Cl compositions of volcanic glasses collected from the submarine flanks of Kilauea Volcano during the JAMSTEC research program. The compositions were determined by electron probe microanalysis (EPMA) at the USGS in Menlo Park, California.

The submarine portion of Kilauea, Hawai‘i’s most active volcano, was a main target during the JAMSTEC program, with 15 manned submersible dives and seven ROV dives. Dive observations revealed that much of the volcano’s south flank, manifested as the midslope bench, consists of volcaniclastic debris, shed from the volcano as turbidites and debris flows. Debris exposed in the outer scarp of the midslope bench spans a large compositional range and records the pre-shield, alkalic phase for this volcano. Coarser debris (breccia clasts) is almost certainly from Kilauea, as are most alkalic sands. For low-S, tholeiitic sand grains, the source volcanoes are probably Mauna Loa and perhaps Mauna Kea.

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Download the data file for this report as an Excel workbook file (of2004-1378data.xls; 512 KB)

For questions about the content of this report, contact Michelle Coombs

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Maintained by: Michael Diggles
Date created: November 2, 2004
Date last modified: November 2, 2004 (mfd)