thumbnail

Restored stratigraphic cross sections and coal correlations in the Tongue River member of the Fort Union Formation, Powder River area, Montana

Miscellaneous Field Studies Map 1127

By:

Links

Abstract

Exposures of the lower two thirds of the Tongue River Member of the Paleocene Fort Union Formation were measured along the Powder River valley in southeastern Montana in the Moorhead and Birney-Broadus coalfields.  This report documents the stratigraphic variations, lateral continuity of partly eroded coal beds along the line of section, and shows ten sections for the Tongue River Member in this study area.  This report is a companion to the report by Flores and Canavello (1979).  The study area represents a linear distance of 35 miles along the Powder River valley and extends from the Wyoming-Montana State line to a point 7 miles southeast of Broadus. Mont. (see index map).  Within this area are relatively continuous outcrops of the middle and lower parts of the Tongue River Member.

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Restored stratigraphic cross sections and coal correlations in the Tongue River member of the Fort Union Formation, Powder River area, Montana
Series title:
Miscellaneous Field Studies Map
Series number:
1127
ISBN:
060780615X
Year Published:
1979
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
2 Plates: 52.00 x 41.10 inches and 45.05 x 25.66 inches
Country:
United States
State:
Montana
Other Geospatial:
Powder River Basin
Scale:
27970
Online Only (Y/N):
N
Additional Online Files (Y/N):
N