WebFormation ranges in thickness from fraction of a foot to approximately 600 feet in north-central and northeastern Montana along International Boundary. Is the basal formation of Jefferson group. Overlies Souris River formation; underlies Birdbear formation (new). WebJan 1, 2010 · Core examination, thin-section studies, and log-to-core correlation of the Birdbear pay zones are being carried out to improve understanding of reservoir quality and trapping mechanisms....
Stratigraphic and structural relations of the Birdbear Formation ...
WebNov 18, 2024 · Beyond limit of the Three Forks Formation, the Cottonwood Canyon unconformably overlies the thin subsurface Birdbear Formation or the exactly equivalent outcropping Birdbear Member at top of Jefferson Formation. Type section: on north wall of Cottonwood Canyon, about 1 mi east of the mouth, in sec. 34, T. 57 N., R. 93 W., Big … WebThe Birdbear replaces the Nisku formation of Baillie, which can not be correlated with the type Nisku formation of the Alberta basin. The subsurface Upper Devonian formations are correlated with the Devonian outcrop at the type locality of the Jefferson and Three Forks formations near Logan, Montana. impact 440 sprayer
BIRDBEAR FORMATION in Grand Forks, ND Company …
WebThe Bear Formation is a geologic formation in Montana. It preserves fossils dating back to the Paleogene period. See also. List of fossiliferous stratigraphic units in Montana; … WebPeriodically, the area dried out, resulting in weathered paleosols and the red and green siltstone layers of the Three Forks Formation which cover the Birdbear Formation carbonates. WebMar 1, 2001 · Oils have been correlated to Winterburn Group source rocks within the Nisku Formation of east-central Alberta, Camrose Member/Nisku Formation of southern Alberta, and the time-equivalent Birdbear Formation of southeast Saskatchewan. impact 5032wg