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More Mesa Asphalt Deposits

MAP     Satellite

Frozen cascades of asphalt and tar dikes are conspicuous along the More Mesa sea cliff.  These deposits are resistant to weathering and wave action and have formed a small foreland along an otherwise straight shoreline.  Deposition of new asphalt has ceased in recent years since the depletion of the adjacent La Goleta gas field.

Other seeps, such as the Carpinteria Asphalt Deposits, have greater biological significance; however, this seep is similar to those that occur elsewhere, including some oh the channel islands and the naturally occurring submarine seeps that frequently result in tar on the sandy beaches.

Integrity:  There are homes atop the cliffs; however, the resistant asphalt is slowing the sea-cliff recession and subsequent slumping.

Use:  Private, though they can be viewed from the beach.

Ref:  Weaver, D. W.  1969.  Geology of the Northern Channel Islands.  Amer. Assoc. of Petro. Geol. Spec. Publ.

April 1976  

Santa Barbara
Inventory of California Natural Areas
Revision © 2005 Steven Louis Hartman

 

 

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Last modified: December 06, 2005