Examlex
Which of the following is true?
Tar Sands
Naturally occurring mixtures of sand or clay, water, and an extremely dense and viscous form of petroleum technically referred to as bitumen.
Oil Seep
The seepage of liquid petroleum at the surface.
Tar Pits
Natural deposits where a form of petroleum called bitumen seeps to the surface, creating pools of tar known for preserving ancient biological specimens.
Unconformity
The contact zone between unlike strata groups, marking a historical period of erosive activity or absence of sediment deposition.
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