California Seeps
California has thousands of naturally occurring seeps. Much of the petroleum discovered in California during the 19th century was from observations of seeps. The world's largest natural oil seepage is Coal Oil Point in the Santa Barbara Channel, California. Three of the better known tar seep locations in California are McKittrick Tar Pits, Carpinteria Tar Pits and the La Brea Tar Pits.
At Kern River Oil Field, there are no active seeps. However, oil stained formations in outcrop remain from previously active seeps.
Petroleum seeps may be a significant source of pollution.
Read more about this topic: Petroleum Seep
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