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Distribution, 14C chronology, and paleomagnetism of latest Pleistocene and Holocene lava flows at Haleakala volcano, Island of Maui, Hawai'i: a revision of lava flow hazard zones

Journal of Geophysical Research B: Solid Earth

By:
, , , , and
DOI: 10.1029/2005JB003876

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Abstract

New mapping and 60 new radiocarbon ages define the age and distribution of latest Pleistocene and Holocene (past 13,000 years) lava flows at Haleakalā volcano, Island of Maui. Paleomagnetic directions were determined for 118 sites, of which 89 are in lava flows younger than 13,000 years. The paleomagnetic data, in conjunction with a reference paleosecular variation (PSV) curve for the Hawaiian Islands, are combined with our knowledge of age limitations based on stratigraphic control to refine age estimates for some of the undated lava flows. The resulting volumetric rate calculations indicate that within analytical error, the extrusion rate has remained nearly constant during the past 13,000 years, in the range 0.05–0.15 km3/kyr, only about half the long-term rate required to produce the postshield strata emplaced in the past ∼1 Myr. Haleakalā's eruptive frequency is similar to that of Hualālai volcano on the Island of Hawai‘i, but its lava flows cover substantially less area per unit time. The reduced rates of lava coverage indicate a lower volcanic hazard than in similar zones at Hualālai.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Distribution, 14C chronology, and paleomagnetism of latest Pleistocene and Holocene lava flows at Haleakala volcano, Island of Maui, Hawai'i: a revision of lava flow hazard zones
Series title:
Journal of Geophysical Research B: Solid Earth
DOI:
10.1029/2005JB003876
Volume
111
Issue:
5
Year Published:
2006
Language:
English
Publisher:
AGU Publications
Description:
B0525: 24 p.
Country:
United States
State:
Hawaii
Other Geospatial:
Haleakala volcano
Online Only (Y/N):
N
Additional Online Files(Y/N):
N