GSA Today
Volume 32, Issue 7
![Cover image](/gsatoday/archive/32/7/cover/i1052-5173-32-7_cvr_img.png)
Schematic diagram summarizing the shallow-water stratigraphic geometry that character-
izes the Bakken Formation relative to the deep-water stratigraphic geometry that characterizes the
overlying basinal facies of the lower Virden subinterval in the North Dakota portion of the Williston
basin, USA.
© The Geological Society of America, Inc.