Bob Hickman, a geologist, former Southern Californian, and owner of the Gallery of the American West in Sacramento, says that Signal Hill is a salt dome, and that has very significant implication for petroleum extraction.
But my limited research emphasizes seismic activity and sandstone layers, without mentioning salt domes. See: Long Beach Geology and Salt Dome
What about it. Is Signal Hill a salt dome? And what may be its significance?
-- RCH
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