Browsing Agricultural Experiment Station Reports and Annual Reports by Author "Walczak, Paul S."

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Submarine plateau volcanism and Cretaceous Ocean Anoxic Event 1a : geochemical evidence from Aptian sedimentary sections

Walczak, Paul S. (2006-05-30)

Marine sediments exceptionally rich in organic carbon, known as black shales, occur globally but intermittently in well correlated Cretaceous successions. The presence of black shales indicates that sporadic, ocean-wide ...