Maps showing locations of holes drilled in 1953 to 1955 by U.S. Geological Survey, Deer Flat and adjacent areas, San Juan County, Utah
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Open-File Report↗
Geology topics
O.T. Marsh
Publications and source records attributed to O.T. Marsh.
Preliminary geologic map of the Gray Head quadrangle, San Miguel County, Colorado
No abstract available.
Colorado↗
A rapid and accurate contour interpolator
An instrument called a "contourpolator" is described. The device is constructed from readily available materials costing about $2.00 and consists of 4 primary parts. Detailed instructions are provided for its assembly and use.
Economic Geology↗
A geologic-profile plotter
Design and uses are described of an easy-to-construct instrument that facilitates construction of profiles of land surfaces, geologic formations, or other features such as profiles of geophysical or geochemical anomalies. Response to data from users of the instrument indicates that it is both faster and more convenient than previous methods.
Economic Geology↗
Little Cone quadrangle, San Miguel County, Colorado
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Miscellaneous Field Studies Map↗
Areal geology of the Little Cone quadrangle, Colorado
The Little Cone quadrangle includes an area of about 59 square miles in eastern San Miguel County in southwestern Colorado. It lies within and adjacent to the northeastern boundary of the Colorado Plateau physiographic province. The precipitous front of the San Juan Mountains lies a few miles to the east and northeast, and an outlier of the San Juans, the San Miguel Mountains, lies about a mile to the south. The quadrangle contains features characteristic of both the plateaus and the mountains, and has been affected by geologic events and processes of two different geologic environments.
Colorado↗