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A Chronostratigraphic Assessment of the Pronghorn Member of the Bakken Petroleum System

Citation

Wade, Bridget Caitlin. (2018-05). A Chronostratigraphic Assessment of the Pronghorn Member of the Bakken Petroleum System. Theses and Dissertations Collection, University of Idaho Library Digital Collections. https://www.lib.uidaho.edu/digital/etd/items/wade_idaho_0089n_11354.html

Title:
A Chronostratigraphic Assessment of the Pronghorn Member of the Bakken Petroleum System
Author:
Wade, Bridget Caitlin
ORCID:
0000-0001-8964-0749
Date:
2018-05
Keywords:
Bakken Biostratigraphy Palynology Pronghorn Sequence Stratigraphy
Program:
Geology
Subject Category:
Geology
Abstract:

Chronostratigraphic definition of the Pronghorn Member of the Bakken Petroleum System facilitates correlation both within the Williston Basin and to coeval formations in adjacent basins. Palynological analysis of the Pronghorn Member reveals parasequences, depositional environments, and relative age. The Pronghorn Member consists of a discrete depositional sequence, variably preserved throughout the basin although locally complete.

Three palynofacies were established within the Pronghorn Member, corresponding to an open marine Lowstand Systems Tract, an intermediate marine Transgressive Systems Tract to Highstand Systems Tract, and a restricted marine Falling Stage Systems Tract. This palynological assemblage corresponds to the palynozone VCo.

Pronghorn Member microfossil and macrofossil assemblages are similar to those of the Trident Member of the Three Forks Formation in Western Montana and suggest synchronous deposition of the two formations. Considering that the Bakken Formation occurs only in the subsurface, establishing an outcropping analog improves reservoir characterization.

Description:
masters, M.S., Geology -- University of Idaho - College of Graduate Studies, 2018-05
Major Professor:
Isaacson, Peter E
Committee:
di Pasquo, Mercedes; Breedlovestrout, Renee
Defense Date:
2018-05
Identifier:
Wade_idaho_0089N_11354
Type:
Text
Format Original:
PDF
Format:
application/pdf

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