Geology of volcanic and subvolcanic rocks of the Raton-Springer area, Colfax and Union counties, New Mexico
By: by Glenn R. Scott, Ray E. Wilcox, and Harald H. Mehnert.
Contributors: Wilcox, Ray E. 1912-; Mehnert, Harald H.
Series: U.S. Geological Survey professional paper ;; 1507
Publisher: U.S. G.P.O.
Published: 1990
Place of publication: Washington
Language: eng
Number of pages: 58
Subjects: Volcanic ash, tuff, etc. -- New Mexico -- Colfax County.; Volcanic ash, tuff, etc. -- New Mexico -- Union County.; Potassium-argon dating.; Geology -- New Mexico -- Colfax County.; Geology -- New Mexico -- Union County.
Notes: Includes bibliographical references (p. 57-58).
"Descriptions, chemical analyses, and ages for an alkalic sill complex and for mafic feldspathoidal and basaltic effusive rocks."