In all the times I've walked the beach at Goleta I've missed the line of fossil pholad bivalves marking the contact (angular unconformity) between the Mio-Plio Sisquoc Formation and the overlying Pleistocene marine terrace (about 1/3 the way down from the top of the cliff).
Pholads clams burrowed into the underlying Sisquoc diatomaceous mudstone and shale. They're pretty obvious! Why have I not seen these before?
More handiwork by pholads in a dolomitic cobble at the base of the cliff.
Oops, also the tight folds and faulting
Oops, also the tight folds and faulting
Oops, also the tight folds and faulting
and some more little folds made more resistant by dolomite (?)
The joy of walking this beach (most beaches?) is always finding something new.
And seeing a new view.
And seeing a new view.
And seeing a new view.
Some descriptions of marine terrace deposits (pg 8) and Sisquoc Formation (pg 17) are here: https://pubs.usgs.gov/of/2007/1403/downloads/pdf/OF07-1403_pamphlet.pdf
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