Geology and mineral deposits of pre-Cambrian rocks of the Van Horn area, Texas

Accompanied by 19 fold-outs. Plate 1 : Geologic map of Pre-Cambrian rocks of the Carrizo Mountains, Hudspeth and Culberson Counties, Texas. Plate 2 : Geologic map of Pre-Cambrian rocks of the Sierra Diablo Foothills, Hudspeth and Culberson Counties, Texas. Plate 3 : Geologic map of Pre-Cambrian rocks of the Sierra Diablo Foothills, Hudspeth County, Texas. Plate 4 : Geologic map of Pre-Cambrian rocks of the Northwest Van Horn Mountains, Culberson and Hudspeth Counties, Texas. Plate 5 : Geologic map of Pre-Cambrian rocks of the NE Van Horn Mountains, Culberson County, Texas. Plate 6 : Geologic map of Pre-Cambrian rocks of the Wylie Mountains, Culberson County, Texas. Plate 7 : Geologic map of Pre-Cambrian rocks of the Eagle Mountains, Hudspeth County, Texas. Plate 8 : Sections across the Carrizo Mountains. Plate 9 : Geologic structure sections in Sierra Diablo foothills. Lines of sections and letter symbols correspond to those on Plates 1 and 2. Plate 10 : Map of Sierra Diablo foothills, showing high-angle joints, fractures, and faults. Plate 11 : Panoramic view of west face of Beach Mountain. Plate 12 : Geologic map of Hazel Mine, Culberson County, Texas. Plate 13 : Hazel Mine in 1891. Plate 14 : Map of the Hazel Mine, World Exploration Co. surface and underground workings, Culberson County, Texas. Plate 15 : Generalized composite map of the Hazel Mine, Culberson County, Texas, 1944. Plate 16 : Assay map of the Hazel Mine, Culberson & Hudspeth Counties, Texas, April 25, 1929. Plate 17 : Geologic and topographic map of the Sancho Panza, St. Elmo, and Black Shaft Mines, and adjacent area, Allamoore Mining District, Hudspeth County, Texas. Plate 18 Underground workings of the Black Shaft Mine, Allamoore Mining District, Hudspeth County, Texas. Plate 19 : Map of part of northwestern Trans-Pecos Texas. Prepared in co-operation with the United States Geological Survey