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The Mendocino crustal conveyor: Making and breaking the California crust

International Geology Review

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Abstract

The northward migration of the Mendocino triple junction has resulted in a fundamental modification of the crust of coastal California. As a consequence of viscous coupling between the southern edge of the Gorda slab and the base of the North American crust beneath the Coast Ranges of central and northern California, the crust of coastal California was first thickened and then thinned. This viscous coupling and ephemeral crustal thickening has produced a distinctive pattern of uplift that allows us to map the three-dimensional extent of crustal modification. This pattern of crustal deformation has combined with the strain field of the developing San Andreas fault system to produce the observed pattern of near-surface deformation. The rapid rise in heat flow south of the triple junction observed in the northern Coast Ranges is a direct consequence of development and removal of the crustal welt that migrated with the triple junction.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The Mendocino crustal conveyor: Making and breaking the California crust
Series title:
International Geology Review
Volume
45
Issue:
9
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
International Geology Review
First page:
767
Last page:
779
Number of Pages:
13