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Gravity evidence for a shallow intrusion under Medicine Lake volcano, California.

Geology

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Abstract

A positive gravity anomaly is associated with Medicine Lake volcano, California. Trials with different Bouguer reduction densities indicate that this positive anomaly cannot be explained by an inappropriate choice of Bouguer reduction density but must be caused by a subvolcanic body. After separating the Medicine Lake gravity high from the regional field, we were able to fit the 27mgal positive residual anomaly with a large, shallow body of high density contrast (+0.41g/cm3) and a thickness of 2.5km. We interpret this body to be an intrusion of dense material emplaced within the several-kilometres-thick older volcanic layer that probably underlies Medicine Lake volcano.-Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Gravity evidence for a shallow intrusion under Medicine Lake volcano, California.
Series title:
Geology
Volume
10
Issue:
10
Year Published:
1982
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
503
Last page:
507
Number of Pages:
5