Early Mississippian (Tournaisian) ostracodes from the Lisburne test well, northern Alaska

Journal Article · Sun Jan 01 04:00:00 EST 1989 · United States Geological Survey, Professional Paper; (USA)

OSTI ID:6844119

Sohn, I G

Anita G. Harris processed limestone sample 27660-PC, core 18, from a depth of 4968.84 to 4970.98 m in the Lisburne No. 1 test well, National Petroleum Reserve in Alaska, and recovered poorly preserved silicified ostracodes. The well is located in the disturbed belt, SE{1/4} sec. 17, T. 11 S., R. 16 W., lat 68{degree}29 0.54381, long 155{degree}41 35.510. A crushed duplicate sample from a depth of 4968.84 to 4970.37 m yielded a few unidentifiable fragments and steinkerns and one carapace of Microcheilinella Geis, 1933. The crushed limestone was dissolved in acetic acid, from which the fine material was periodically removed, and yielded additional poorly preserved replaced ostracodes, including some that were not represented in the original sample. The ostracodes indicate a probable Kinderhookian and (or) Osagan age for the rocks. The assemblage differs, on the species level, from congeneric Meramecian ostracodes in the Brooks Range, and there are a few taxa not found in the Meramecian assemblages. In addition to the ostracodes, steinkerns of minute gastropods and pelecypods, brachiopod and echinoderm spines, fish teeth, fragments of bryozoans, and one conodont were recovered. These associated fossils confirm that marine shelf environment indicated by the ostracodes: Because of poor preservation and meager representation of conspecific specimens, the ostracodes are illustrated in open nomenclature. The presently known stratigraphic ranges of the known genera are indicated.

• OSTI ID: 6844119
• Journal Information: United States Geological Survey, Professional Paper; (USA), Journal Name: United States Geological Survey, Professional Paper; (USA); ISSN XGPPA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALASKA
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
CARBONATE ROCKS
CARBONIFEROUS PERIOD
CRUSTACEANS
DRILL CORES
EXPLORATORY WELLS
FEDERAL REGION X
FOSSILS
GEOLOGIC AGES
GEOLOGIC HISTORY
GEOLOGY
INVERTEBRATES
LIMESTONE
NORTH AMERICA
PALEONTOLOGY
PALEOZOIC ERA
RESERVES
RESOURCES
ROCKS
SAMPLE PREPARATION
SEDIMENTARY ROCKS
STRATEGIC PETROLEUM RESERVE
STRATIGRAPHY
USA
WELLS