Related Experiment Video
Updated: Jul 12, 2026

Preparation of Authigenic Pyrite from Methane-bearing Sediments for In Situ Sulfur Isotope Analysis Using SIMS
Published on: August 31, 2017
Petroleum associated with polymetallic sulfide in sediment from gorda ridge
Abstract:
A sediment sample, impregnated with asphaltic petroleum and polymetallic sulfide, was dredged from the southern end of Gorda Ridge (the Escanaba Trough) off northern California, within the offshore Exclusive Economic Zone of the United States. The molecular distributions of hydrocarbons in this petroleum show that it was probably derived from terrestrial organic matter in turbidite sediment filling the Escanaba Trough. Hydrothermal activity at the Gorda Ridge spreading center provided the heat for petroleum formation and was the source of fluids for sulfide mineralization.
Related Concept Videos
Acid Mine Drainage
Precipitation and Co-precipitation
Diversity of Protists III
Preparation and Reactions of Sulfides
Green Algae
Sulfur Assimilation

