Sedimentologic and ichnologic studies on the aftermath of an oil spill (∼600 t) revealed virtually no lasting records of substrate contamination and reactivation. Cores from marshes, harbors, beaches, and the offshore area were mainly indicative of normal coastal sequences, including various dynamic equilibria between sedimentary deposits and typically fluctuating environmental conditions. Much larger perturbations evidently are required to affect final stratigraphic sequences and the fossil record.

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