SAN ANTONIO MOUNTAIN
SAN ANTONIO MOUNTAIN. San Antonio Mountain is on the Texas-New Mexico border twenty miles northwest of Dell City in north central Hudspeth County (at 32°00' N, 105°33' W). Its summit reaches 7,023 feet above sea level. It is the westernmost, largest, and highest of the Cornudas Mountains. San Antonio Mountain is a laccolith, or mushroom-shaped igneous intrusion, from the Cretaceous period, some 100 million years ago. On it, shallow, stony soils support scrub brush and grasses.
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."SAN ANTONIO MOUNTAIN," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rjs04), accessed December 11, 2013. Published by the Texas State Historical Association.