A Paleoenvironmental Analysis Based on Ostracode Assemblages from the Late Pliocene Tuapaktushak and Middle Pleistocene Karmuk Members of the Gubik Formation of the Arctic Coastal ...
This study records and analyzes ostracode assemblages recovered from sediments assigned to the Late Pliocene Tuapaktushak and Middle Pleistocene Karmuk members of the Gubik Formation in the Skull Cliff area of the Arctic Coastal Plain in western Alaska. Forty-three species were identified from 47 sa...
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Old Dominion University
1992
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| Online Access: | https://dx.doi.org/10.25777/21jd-t536 https://digitalcommons.odu.edu/oeas_etds/346/ |
| Summary: | This study records and analyzes ostracode assemblages recovered from sediments assigned to the Late Pliocene Tuapaktushak and Middle Pleistocene Karmuk members of the Gubik Formation in the Skull Cliff area of the Arctic Coastal Plain in western Alaska. Forty-three species were identified from 47 samples (25 from the Tuapaktushak Member and 23 from the Karmuk Member). Samples were grouped by Q-mode cluster analysis and by member assignment for the purpose of analysis. Paleoenvironmental analyses of ostracode assemblages representative of each cluster suggest all samples, regardless of cluster membership, were deposited in similar marine environments where water depths were in the inner to middle neritic range, salinities were normal with local variability, and the marine climates were frigid to subfrigid. Paleoenvironmental analyses of ostracode assemblages by member assignment suggest the Tuapaktushak and Karmuk Members were both deposited in environments similar to those described above and the ... |
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