Database Search
Brief Report for Kahuku fault system (Class A) No. 2604
Partial Report ||Complete Report
citation for this record: Cannon, E.C., and Bürgmann, R.Roland, compilers, 2006, Fault number 2604, Kahuku fault system, 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 06:01 AM.
| Synopsis | The Kahuku fault system is located on the southwestern part of Mauna Loa Volcano, where Mauna Loa's southwest rift zone [2605c] shifts eastward approximately 5 km. The west-dipping normal faults of the fault system are co-located along crater chains and fissure vents active as recently as 1868 (Wolfe and Morris, 1996 #6977). The Kahuku fault system may connect with the Kealakekua fault system [2603] to form the southwest Hawai'i slide complex, possibly buried beneath lava flows on the western flank of Mauna Loa (Moore and others, 1989 #6961; Lipman, 1995 #6987). Offshore of Ka Lae (South Point), the normal fault system extends for an additional 20-40 km to the south, with the hanging wall block down to the west (Fornari, 1987 #6942; Moore and Chadwick, 1995 #6959). The South Kona slump and Ka Lae East debris avalanche are located to the west of the offshore extension of the Kahuku fault system (Moore and others, 1989 #6961; Moore and Chadwick, 1995 #6959). |
| County(s) and State(s) | HAWAII COUNTY COUNTY, HAWAII |
| AMS sheet(s) | Hawaii |
| Physiographic province(s) | HAWAIIAN - EMPEROR ISLAND - SEAMOUNT CHAIN |
| Length (km) | 24 km. |
| Average strike | N. 12° W. |
| Sense of movement | |
| Dip Direction | W |
| Historic earthquake | Ka'u earthquake 1868 |
| Most recent prehistoric deformation | Late Quaternary (<130 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 |
