Geologic map of the Bristol Head quadrangle, Mineral and Hinsdale Counties, Colorado /

Bibliographic Details
Main Author:	Steven, Thomas A. (Thomas August), 1917-2013
Corporate Authors:	Geological Survey (U.S.), Colorado. Mining Industrial Development Board
Format:	Government Document Map
Language:	English
Published:	Washington, D.C. : U.S. Geological Survey, 1967.
Series:	Geological quadrangle map ; GQ-631.
Subjects:	Geology > Colorado > Mineral County > Maps. Geology > Colorado > Hinsdale County > Maps.

Description
Item Description:	Relief shown by contours and spot heights. "Geology by T.A. Steven and J.C. Ratte,́ 1956; T.A. Steven assisted by T.M. Geib, 1963-64 and G.W. Leo, 1964." Includes text, 2 col. cross-sections, map showing quad location in relation to San Juan volcanic field, and location map. Location map on envelope. Covers "Baldy Cinco," "Bristol Head," "Hermit Lakes," and "Slumgullion Pass" 7.5ʹ quadrangles. Cartographic material.
Physical Description:	1 map : color ; 44 x 35 cm., on sheet 63 x 100 cm., folded to 26 x 20 cm., in envelope 30 x 24 cm.
Bibliography:	Includes bibliographical references.