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The dating of minerals and whole rocks by the potassium-argon method is now available to the petroleum industry on a low-cost, routine commercial basis. This service can provide valuable information regarding provenance of detrital material, and age correlations of volcanic rocks and nonfossiliferous strata. The method is particularly useful in distinguishing minor intrusives from basement. Application of potassium-argon dates is not restricted to long-term studies because modern analytic methods make possible the return of data in lengths of time consistent with decisions required by an active drilling operation.
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