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Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope Basin, Alaska

American Journal of Science

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, , , , , and

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Abstract

Greigite is ubiquitous in marine mudstone of the Seabee Formation, and it dominates the magnetic properties of the Seabee. The Seabee rocks fill an ancient submarine canyon cut into marine, transitional, and nonmarine sandstone, siltstone, and mudstone beds of the undifferentiated Ninuluk and Seabee Formations. Different geochemical signatures in the Seabee Formation and undifferentiated Ninuluk and Seabee rocks indicate different origins of their greigite and associated iron disulfide minerals. In the Seabee, greigite and pyrite formed during early diagenesis via bacterial sulfate reduction utilizing indigenous sulfate and organic carbon. -Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope Basin, Alaska
Series title:
American Journal of Science
Volume
294
Issue:
4
Year Published:
1994
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Journal of Science
First page:
485
Last page:
528
Number of Pages:
44