Surficial geologic map of the Grassy Lake Reservoir quadrangle, Yellowstone National Park and adjoining area, Wyoming /

Bibliographic Details
Main Author:	Richmond, Gerald Martin, 1914-
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Map
Language:	English
Published:	Washington, D.C. : U.S. Geological Survey, 1973.
Series:	Miscellaneous geologic investigations ; map I-644.
Subjects:	Sediments (Geology) > Yellowstone National Park > Maps. Geology > Wyoming > Teton County > Maps. Geology > Yellowstone National Park > Maps. Yellowstone National Park > Maps.

Description
Item Description:	Contour interval 40 feet. Marginal map: Map of Grassy Lake Reservoir quadrangle showing distribution of Quaternary rhyolite flows. Includes index map and text with bibliography. Cartographic material.
Physical Description:	1 map : color ; 45 x 33 cm., on sheet 81 x 102 cm., folded in envelope 30 x 24 cm.