Map showing structure contours on the top of the upper Jurassic Morrison Formation, Powder River basin, Wyoming and Montana
Links
- Plate: Plate 1 (pdf)
- Download citation as: RIS | Dublin Core
Abstract
This map is one in a series of U.S. Geological Survey Miscellaneous Field Studies (MF) maps showing computer-generated structure contours, isopachs, and cross sections of selected formations in the Powder River basin, Wyoming and Montana. The map and cross sections were constructed from information stored in a U.S. Geological Survey Evolution of Sedimentary Basins data base. This data base contains picks of geologic formation and (or) unit tops and bases determined from electric resistivity and gamma-ray logs of 8,592 wells penetrating Tertiary and older rocks in the Powder River basin. Well completion cards (scout tickets) were reviewed and compared with copies of all logs, and formation or unit contacts determined by N. M. Denson, D.L. Macke, R. R. Schumann and others. This isopach map is based on information from 2,429 of these wells that penetrate the Minnelusa Formation and equivalents.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Map showing structure contours on the top of the upper Jurassic Morrison Formation, Powder River basin, Wyoming and Montana |
| Series title | Miscellaneous Field Studies Map |
| Series number | 2140 |
| Chapter | C |
| DOI | 10.3133/mf2140C |
| Edition | - |
| Year Published | 1991 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Denver, CO |
| Description | Map: 41.33 x 35.66 inches |
| Country | United States |
| State | Montana;Wyoming |
| Scale | 500000 |
| Google Analytic Metrics | Metrics page |