Volcanic neck east of La Abra de Los Cerros, view looking east. Sandoval County, New Mexico. 1930.
Dates
Date Taken
1930
Summary
Volcanic neck east of La Abra de Los Cerros, view looking east. The country rock is Cretaceous shale. There is a vertical contact between the shale and the banded basaltic breccia that dips into the neck. Irregular masses of andesite or basalt with columnar jointing intrude the breccia. Sandoval County, New Mexico. 1930. Plate 14-A, with graphics, U.S. Geological Survey Professional paper 189-B. 1938. Album caption: Hunt, 236. Sandoval County, N.M. [handwritten note:1932] W. Side of neck located E. of La Abra de los Anos (T. 16 N., R. 3 W) The sloping foreground is a gently dipping sandy facies of the Mancos. The dark portions of the neck are breccia, the jointed portions andesite.
Summary
Volcanic neck east of La Abra de Los Cerros, view looking east. The country rock is Cretaceous shale. There is a vertical contact between the shale and the banded basaltic breccia that dips into the neck. Irregular masses of andesite or basalt with columnar jointing intrude the breccia. Sandoval County, New Mexico. 1930. Plate 14-A, with graphics, U.S. Geological Survey Professional paper 189-B. 1938.
Album caption: Hunt, 236. Sandoval County, N.M. [handwritten note:1932] W. Side of neck located E. of La Abra de los Anos (T. 16 N., R. 3 W) The sloping foreground is a gently dipping sandy facies of the Mancos. The dark portions of the neck are breccia, the jointed portions andesite.
Available in the U.S. Geological Survey Denver Library Photographic Collection. Hunt, C.B. Collection.
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