No latest activity reported for Haleakala.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Bergmanis E C, Sinton J M, Trusdell F A, 2000. Rejuvenated volcanism along the southwest rift zone, East Maui, Hawai'i. {Bull Volc}, 62: 239-255

Crandell D R, 1983. Potential hazards from future volcanic eruptions on the island of Maui, Hawaii. {U S Geol Surv Map}, I-1442

Eakins B W, Robinson J E, 2006. Submarine geology of Hana Ridge and Haleakala volcano's northeast flank, Maui. {J Volc Geotherm Res}, 151: 229-250

Green J, Short N M, 1971. {Volcanic Landforms and Surface Features: a Photographic Atlas and Glossary}. New York: Springer-Verlag, 519 p

Katsui Y (ed), 1971. List of the World Active Volcanoes. {Volc Soc Japan draft ms}, (limited circulation), 160 p

Macdonald G A, 1955. Hawaiian Islands. {Catalog of Active Volcanoes of the World and Solfatara Fields}, Rome: IAVCEI, 3: 1-37

Macdonald G A, 1978. Geologic map of the crater section of Haleakala National Park, Maui, Hawaii. {U S Geol Surv Map}, I-1088, 8 p text

Reber G, 1959. Age of lava flows on Haleakala, Hawaii. {Geol Soc Amer Bull}, 70: 1245-1246

Robinson J E, Eakins B W, 2006. Calculated volumes of individual shield volcanoes at the young end of the Hawaiian Ridge. {J Volc Geotherm Res}, 151: 309-317

Sherrod D R, McGeehin J P, 1999. New radiocarbon ages from Haleakala crater, island of Maui, Hawai'i. {U S Geol Surv Open-File Rpt}, 99-143: 1-14

U S Geological Survey, 2002. Tables of new volcano-related radiocarbon ages for East Maui (Haleakala volcano) as of 2002. {http://hvo.usgs.gov/volcanoes/halakala.c14ages_2002.pdf}

U S Geological Survey, 1999. Youngest lava flows on East Maui probably older than A.D. 1790. {http://hvo.wr.usgs.gov/volcanowatch/1999/99_09_09.html}

The massive Haleakala shield volcano forms the eastern portion of the dumbbell-shaped island of Maui. The summit of 3055-m Haleakala contains a dramatic, 3.5 x 9.5 km summit crater that is widely breached on the north and SE sides. The "crater" is not of volcanic origin, but formed as a result of the coalescence of headward erosion of the Koolau and Kaupo valleys. Subsequently the crater has been partially filled by a chain of young cinder cones and lava flows erupted along a major rift zone that extends across the basaltic shield volcano from the SW to the east flanks. Another less prominent rift zone trends north from the summit. The most recent eruption of Haleakala was thought to have occurred between the exploring voyages of La Perouse in 1786 and Vancouver in 1793, but uncertainty surrounds the date of this event, which could have occurred in about 1750 AD (anthropological evidence) or several centuries earlier (radiocarbon dates).