Mitchell Reynolds
Science and Products
Geologic map of the Strawberry Butte 7.5’ quadrangle, Meagher County, Montana
The 7.5′ Strawberry Butte quadrangle in Meagher County, Montana near the southwest margin of the Little Belt Mountains, encompasses two sharply different geologic terranes. The northern three-quarters of the quadrangle are underlain mainly by Paleoproterozoic granite gneiss, across which Middle Cambrian sedimentary rocks rest unconformably....
Reynolds, Mitchell W.; Brandt, Theodore R.
Preliminary geologic map of the White Sulphur Springs 30' x 60' Quadrangle, Montana
The geologic map of the White Sulphur Springs quadrangle, scale 1:100,000, was made as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of the geologically complex area in west-central Montana. The quadrangle encompasses about 4,235 km2 (1,635 mi2), across part of the Smith...
Reynolds, Mitchell W.; Brandt, Theodore R. Preliminary geologic map of the Townsend 30' x 60' quadrangle, Montana
The geologic map of the Townsend quadrangle, scale 1:100,000, was made as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of this geologically complex area in west-central Montana. The quadrangle encompasses about 4,200 square km (1,640 square mi).
Reynolds, Mitchell W.; Brandt, Theodore R.
Stratigraphy and structural history of the eastern edge of the Helena salient, Montana
No abstract available.
Reynolds, Mitchell W. Structural termination of the Montana disturbed belt and its interaction with major structures of the continental autochthon
No abstract available.
Reynolds, Mitchell W. Laccoliths of the southwest part of the Little Belt Mountains; their relation to ancestral structures of the Central Montana Uplift
No abstract available.
Reynolds, Mitchell W. 40Ar/39Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana
Harlan, Stephen S.; Snee, Lawrence W.; Reynolds, Mitchell W.; Mehnert, Harald H.; Schmidt, R.G.; Sheriff, Steve D.; Irving, Anthony J. Geologic map of the Canyon Ferry Dam 30' x 60' quadrangle, west-central Montana
Reynolds, Mitchell W.; Brandt, Theodore R. Geologic map of the Nelson quadrangle, Lewis and Clark County, Montana
The geologic map of the Nelson quadrangle, scale 1:24,000, was prepared as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of an area in the geologically complex southern part of the Montana disturbed belt. In the Nelson area, rocks ranging in age from Middle Proterozoic...
Reynolds, Mitchell W.; Hays, William H. Geologic map of the Hogback Mountain quadrangle, Lewis and Clark and Meagher Counties, Montana
The geologic map of the Hogback Mountain quadrangle, scale 1:24,000, was made as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of an area in the geologically complex southern part of the Montana disturbed belt. In the Hogback Mountain area, rocks ranging in age from...
Reynolds, Mitchell W. Hydrology of the Helena area bedrock, west-central Montana, 1993-98; with a section on geologic setting and a generalized bedrock geologic map
The Generalized Bedrock Geologic Map of the Helena Area, West-Central Montana (plate 1 in the report) provides an intermediate-scale overview of bedrock in the Helena area. The geologic map has been compiled at a scale of 1:100,000 from the most widely available sources of geologic map information (see index to geologic mapping on pl. 1). That...
Thamke, Joanna N.; Reynolds, Mitchell W. Toward digital geologic map standards: a progress report
Establishing modern scientific and technical standards for geologic maps and their derivative map products is vital to both producers and users of such maps as we move into an age of digital cartography. Application of earth-science data in complex geographic information systems, acceleration of geologic map production, and reduction of population...
Ulrech, George E.; Reynolds, Mitchell W.; Taylor, Richard B.