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Brief Report for Kohala Volcano, Kohala headwall section (Class B) No. 2600d
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citation for this record: Cannon, E.C., and Bürgmann, R.Roland, compilers, 2006, Fault number 2600d, Kohala Volcano, Kohala headwall section, in Quaternary fault and fold database of the United States: U.S. Geological Survey website, http://earthquakes.usgs.gov/regional/qfaults, accessed 11/24/2009 06:08 AM.
| Synopsis | General: Kohala is the oldest volcano on the Island of Hawai'i. It has two poorly defined volcanic lineaments inferred along broad topographic ridges: the northwest [2600a] and southeast [2600b] volcanic lineaments. These volcanic lineaments may follow the general trend of earlier shield-stage rift zones. At the summit region in the Kohala Mountains, the volcanic lineaments are co-located with the northwest-trending Kohala graben [2600c] (Wolfe and Morris, 1996 #6977). Along the northeast coast of the Kohala Peninsula, a coastal "headwall" [2600d] trends approximately northwest from Kukuihaele to Akokoa Point. The Kohala graben most likely is a pull-apart graben at the head of the 3,500 square kilometer Pololu submarine debris avalanche (Moore and others, 1989 #6961). Sections: This fault has 4 sections. The sections are the northwest [2600a] and southeast [2600b] volcanic lineaments, the Kohala graben [2600c], and the Kohala headwall [2600d]. |
| County(s) and State(s) | HAWAII COUNTY COUNTY, HAWAII |
| AMS sheet(s) | Hawaii |
| Physiographic province(s) | HAWAIIAN - EMPEROR ISLAND - SEAMOUNT CHAIN |
| Length (km) | This section is 20 km of a total fault length of 22 km. |
| Average strike | N. 63° W. (for section) versus N. 53° W. (for whole fault) |
| Sense of movement | |
| Dip Direction | NE |
| Historic earthquake | |
| Most recent prehistoric deformation | Middle and late Quaternary (<750 ka) |
| Slip-rate category | Less than 0.2 mm/yr |
| Date and Compiler(s) | 2006 Eric C. Cannon, none Roland Bürgmann, University of California at Berkeley |
