Glacial-eustatic sea-level fluctuation curve for Carboniferous-Permian boundary strata based on outcrops in the North American Midcontinent and North-Central Texas

Conference · Mon Feb 01 04:00:00 EST 1993 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:6003663

Boardman, D R ^[1]

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1. Oklahoma State Univ., Stillwater, OK (United States). School of Geology

Based on lithologic and faunal analysis of uppermost Carboniferous through Lower Permian strata (Wabaunsee through lower Chase groups) exposed from southeastern Nebraska through north-central Oklahoma, a preliminary glacial-eustatic sea-level fluctuation curve is presented herein. In addition to the sea-level curve presented for the Midcontinent region, one for coeval outcropping strata (middle and upper Cisco Group) of the Eastern Shelf of the Midland Basin is also presented based on similar criteria. This sea-level curve is derived from new field studies as well as a refinement of earlier curves presented by Harrison (1973), and Boardman and Malinky (1985). The conclusion on the nature of the Carboniferous-Permian boundary strata cyclothems in the Midcontinent is mirrored by the results of that from North-Central Texas. Each of the primary biostratigraphically-based picks for the Carboniferous-Permian boundary coincide with either intermediate of major cycles in both study areas. Utilization of a glacial-eustatic maximum transgressive event for the Carboniferous-Permian boundary should result in a more correlatable level for intercontinental correlation.

• OSTI ID: 6003663
• Report Number(s): CONF-9303212--
• Conference Information: Journal Name: Geological Society of America, Abstracts with Programs; (United States) Journal Volume: 25:1
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
AGE ESTIMATION
CARBONIFEROUS PERIOD
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOLOGY
KANSAS
LEVELS
LITHOLOGY
NEBRASKA
NORTH AMERICA
OKLAHOMA
PALEONTOLOGY
PALEOZOIC ERA
PERMIAN PERIOD
PETROLOGY
SEA LEVEL
SEDIMENTARY BASINS
STRATIGRAPHY
TEXAS
USA
VARIATIONS