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Widespread venting of methane-rich fluids in Late Cretaceous (Campanian) submarine springs (Tepee Buttes), Western Interior seaway, U.S.A.

1996; Geological Society of America; Volume: 24; Issue: 9 Linguagem: Inglês

10.1130/0091-7613(1996)024 2.3.co;2

1943-2682

Erle G. Kauffman, Michael A. Arthur, Brigitte Howe, Peter A. Scholle,

CO2 Sequestration and Geologic Interactions

Research Article| September 01, 1996 Widespread venting of methane-rich fluids in Late Cretaceous (Campanian) submarine springs (Tepee Buttes), Western Interior seaway, U.S.A. Erle G. Kauffman; Erle G. Kauffman 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802 Search for other works by this author on: GSW Google Scholar Michael A. Arthur; Michael A. Arthur 2Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309-0250 Search for other works by this author on: GSW Google Scholar Brigitte Howe; Brigitte Howe 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802 Search for other works by this author on: GSW Google Scholar Peter A. Scholle Peter A. Scholle 3Department of Geological Sciences, Southern Methodist University, Dallas, Texas 75275 Search for other works by this author on: GSW Google Scholar Geology (1996) 24 (9): 799–802. https://doi.org/10.1130/0091-7613(1996)024 2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Erle G. Kauffman, Michael A. Arthur, Brigitte Howe, Peter A. Scholle; Widespread venting of methane-rich fluids in Late Cretaceous (Campanian) submarine springs (Tepee Buttes), Western Interior seaway, U.S.A.. Geology 1996;; 24 (9): 799–802. doi: https://doi.org/10.1130/0091-7613(1996)024 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract From New Mexico to Montana, Campanian shales contain abundant submarine spring and seep deposits aligned along early Laramide basement faults. From spring conduit to sea floor, characteristic lithofacies are (a) a vuggy pelletoid micrite core to 30 m height, 5 m width; (b) lucinoid bivalve coquina in pelletoid micrite or grainstone; (c) carbonate slump breccias in shale; (d) concretion-bearing shale; and (e) organic-rich shale. Stable isotope analyses of early, zoned, marine core rock cements suggest (a) an oxidized methane source for the carbonate carbon, (b) venting of methane-charged fluids along active fracture zones, and (c) methanogenesis in older and coeval organic carbon–rich muds. Six consistently zoned foraminifer and macrofaunal communities suggest a strong environmental stress gradient over a few metres from spring vents to the adjacent sea floor. These methane springs and their biotas were dynamic and episodically active over a 1.25 m.y. time span. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.