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Disruption of the mauna loa magma system by the 1868 Hawaiian earthquake: Geochemical evidence

Science

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Abstract

To test whether a catastrophic earthquake could affect an active magma system, mean abundances (adjusted for "olivine control") of titanium, potassium, phosphorus, strontium, zirconium, and niobium of historic lavas erupted from Mauna Loa Volcano, Hawaii, after 1868 were analyzed and were found to decrease sharply relative to lavas erupted before 1868. This abrupt change in lava chemistry, accompanied by a halved lava-production rate for Mauna Loa after 1877, is interpreted to reflect the disruptive effects of a magnitude 7.5 earthquake in 1868. This interpretation represents a documentable case of changes in magmatic chemical variations initiated or accelerated by a major tectonic event.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Disruption of the mauna loa magma system by the 1868 Hawaiian earthquake: Geochemical evidence
Series title:
Science
Volume
235
Issue:
4785
Year Published:
1987
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
199
Last page:
202