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Showing 1 to 4 of 4 for “"Stratigraphic--Devonian; Geology"”.
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Analysis of petroleum source rocks of the Bakken Formation (Devonian and Mississippian) in North Dakota
<p>The Bakken Formation of North Dakota consists of upper and lower, black, organic-rich shales separated by a calcareous siltstone middle member. The formation is a relatively thin unit (maximum thickness of 145 feet) with the lower shale .attaining a maximum thickness of 50 feet and the upper …
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Conodonts of the Bakken Formation (Devonian and Mississippian), Williston Basin, North Dakota
… Palmatolepis, and Branmehla. Twenty-one biostratigraphically useful species of these genera were identified. Conodonts are unevenly distributed in the Bakken Formation. Most were obtained from thin (about 0.2 in., 0.5 cm), fossil-rich beds in the upper shale. Only rare, fragmentary conodonts …
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Diagenesis of the middle member of the Bakken Formation, Williston Basin, North Dakota
… the well. The “trait beds” were inserted in a stratigraphic column of members of the Bakken Formation to compare their structure to the Bakken Formation over the course of the cross section. No distinct patterns were revealed though a larger sample of wells and cores may provide different …
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Stratigraphy and depositional environments of the Three Forks Formation (Upper Devonian), Williston Basin, North Dakota
<p> The Three Forks Formation (Upper Devonian) is present in the subsurface in the western two-thirds of North Dakota and is generally conformable with the underlying Birdbear Formation and the overlying Bakken Formation. </p><p> The Three Forks attains a maximum thickness of 265 feet (81 meters) …