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Filtering by: Has journal Paleoceanography Resource Type Masters Thesis Subject Marine sediments -- Analysis

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

Creator:

Walczak, Paul S.

Abstract:

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 interruption of normal respiration of marine organic matter during oxygen-deficient conditions has occurred. Submarine volcanism on a massive scale, related to...

Resource Type:

Masters Thesis
Hydrothermal links between ocean plateau formation and global anoxia at the Cenomanian-Turonian boundary

Creator:

Snow, Laura J.

Abstract:

The Cretaceous was a period of extreme climatic conditions accompanied by major perturbations in ocean-atmosphere biogeochemical cycles. One of the most intriguing features is the sporadic interruption of normal marine pelagic sediment deposition by organic rich sediments deposited during oxygen-deficient conditions (ocean anoxic events OAEs). A current model for the...

Resource Type:

Masters Thesis