Geologic map of the north San Ysidro quadrangle, San Miguel County, New Mexico
By: by Ross B. Johnson.
Contributors: Johnson, Ross B., 1919-
Series: Geologic quadrangle map -- GQ-1007.
Publisher: U.S. Geological Survey
Place of publication: Reston, Va
Format: Map
Subjects: Geology -- New Mexico -- San Miguel County -- Maps.
Genres: Maps.
Other titles: North San Ysidro quadrangle, San Miguel County, New Mexico.
Notes: Relief shown by contours and spot heights.

"Geology mapped in 1969-70."

Includes col. cross section and quadrangle map.