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 this area in
west-central Montana. The quadrangle encompasses about 4,200 square km (1,625
square mi), across most of the Little Belt Mountains, Castle Mountains, and
upper drainage areas of the North Fork of the Smith River, North Fork of the
Musselshell River, and the Judith River.

The geologic map of the White Sulphur Springs quadrangle, Montana, provides a
summary of mainly new and selected existing geologic information for public use
and use by Federal, State, and local governmental agencies for land-use
planning, including assessment of natural resources, natural hazards,
recreations potential, and land-use management. When used in conjunction with
subsurface data, the map can provide information applicable to evaluation of
surface water and ground water occurrences and potential.

[Summary provided by the USGS.]