thumbnail

Mineral resource potential of the Piedra Wilderness Study Area, Archuleta and Hinsdale counties, Colorado

Miscellaneous Field Studies Map 1630-A

By:
, , , and

Links

Abstract

The mineral resource potential of the Piedra Wilderness Study Area is low. No occurrences of metallic minerals, of valuable industrial rocks and minerals, or of useful concentrations of organic fuels are known in the study area. However, a noneconomic occurrence of gypsum in the Jurassic Wanakah Formation lies a few hundred feet west of the WSA boundary, is believed to extend into the WSA, and has a low resource potential. Particular attention was paid to the possible occurrence of organic fuels in the Pennsylvanian Hermosa Formation, of uranium and vanadium in the Jurassic Entrada Sandstone and Morrison Formation, and of coal in the Cretaceous Dakota Sandstone. Thin coaly beds in the Dakota have a low resource potential. Extensive sampling of stream sediments, limited sampling of rock outcrops and springs, and a number of scintillometer traverses failed to pinpoint significant anomalies that might be clues to mineral deposits.

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Mineral resource potential of the Piedra Wilderness Study Area, Archuleta and Hinsdale counties, Colorado
Series title:
Miscellaneous Field Studies Map
Series number:
1630
Chapter:
A
Year Published:
1983
Language:
English
Publisher:
U.S. Geological Survey
Description:
Report: 7 p.; Plate: 33.57 x 27.58 inches
Country:
United States
State:
Colorado
County:
Archuleta County, Hinsdale County
Other Geospatial:
Piedra Wilderness Study Area
Scale:
50000
Online Only (Y/N):
N
Additional Online Files (Y/N):
N