La Brea has always fascinated and confused me. Oil needs wells, derricks, and general hard work to get. It also just forms puddles on the ground all on it's own??
Wikipedia let me know about the transition to asphalt from oil ---- I no longer need to wonder how an asphalt pit can relate to my confusion on oil weeps, oops, seeps:
"Tar pits are composed of heavy oil fractions called gilsonite, which seeped from the Earth as oil. In Hancock Park, crude oil seeps up along the 6th Street Fault from the Salt Lake Oil Field, which underlies much of the Fairfax District north of the park. The oil reaches the surface and forms pools at several locations in the park, becoming asphalt as the lighter fractions of the petroleum biodegrade or evaporate."
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