Genetic sequence relationships of Winnipegosis platform carbonates, southern Elk Point basin, North Dakota
Conference
·
· AAPG Bull.; (United States)
OSTI ID:5878766
Examination of cores and well log data from the Winnipegosis Formation (Givetian) within a study area of approximately 11,500 mi/sup 2/ (30,000 km/sup 2/) in northern North Dakota allows recognition of seven time-stratigraphic progradational units within the Winnipegosis Formation. Together with the underlying Ashern Formation, these units are arranged in landward-stepping, vertical stacking, and seaward-stepping geometric patterns, which reflect changes in relative sea level. Abrupt juxtaposition of shallow over deeper water lithologies, evidence for subaerial exposure, and onlap geometries further suggest that these progradational units form two larger, Vail-type sequences separated by regionally persistent unconformities or their correlative conformities.
- Research Organization:
- Colorado School of Mines, Golden (USA)
- OSTI ID:
- 5878766
- Report Number(s):
- CONF-880301-
- Conference Information:
- Journal Name: AAPG Bull.; (United States) Journal Volume: 72:2
- Country of Publication:
- United States
- Language:
- English
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