New Mexico Geological Society
Fall Field Conference Guidebook - 31
Trans Pecos Region (Southeastern New Mexico and West Texas)

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Patricia W. Dickerson, Jerry M. Hoffer and Jonathan F. Callender, eds, 1980, 308 pages.

The first day road log is from Van Horn to Guadalupe Mountains to the Duval Frasch sulphur operation in Culberson County to Seven Heart Gap and return to Van Horn. This trip leads northward from Van Horn along Salt Flat graben, nearly paralleling the steep fault-line scarp which forms the eastern boundary of Sierra Diablo, to the vicinity of El Capitan Peak at the south end of the Guadalupe Mountains; thence across the northern end of the Delaware Mountains and foothills developed on basinal sediments east and below the reef shelf-edge rocks of the main trend of the Guadalupe Mountains to the Texas-New Mexico boundary; thence eastward on Highway 652 across the Gypsum Plain and the Screwbean Hills to the Duval Corporation's sulphur mining operation in the Rustler Hills area. The second day road log is from Van Horn to Tumbledown Mountain, Hazel Mine, Southern Wylie Mountains and return to Van Horn. This trip will examine excellent exposures of the lower part of the Precambrian section of the Van Horn area, the Van Horn Sandstone and the Hazel and Allamoore formations. The trip leads across Red Valley along Hackberry Creek to Tumbledown Mountain, a western spur of Beach Mountain, and around Beach Mountain to the Hazel Mine. Of particular interest should be the extensive talc deposits in the Allamoore Formation and complex structures in the Tumbledown Mountain. The lower Paleozoic Bliss, El Paso and Montoya formations, and the Permian Hueco Limestone are well exposed in escarpments and fault blocks bounding Beach Mountain. The old Hazel Mine, located on the Hazel fracture zone, produced significant quantities of copper and silver in the late 1800's and early 1890's, and may be reopened in the near future. The third day road log is from Van Horn to Allamoore to Eagle Mountains to Quitman Mountains. This trip will examine some of the Precambrian Carrizo Mountain group rocks as exposed in road cuts along I-10 in the Gifford-Hill rock quarry in the northern Carrizo Mountains. We will see the type locality of the Texas Lineament and talc plants at Allamoore. In the Eagle Mountains, a resurgent caldron in and around which Precambrian, Permian and Cretaceous sediments, cauldron-facies volcanic rocks, and a large syenite intrusive body are well exposed. In the Quitman Gap area participants can view some of the complex structure of the Southern Quitman Mountains, the quartz monzonite ring dike which nearly encircles the Quitman Cauldron, and the intracauldron volcanic pile (Square Peak Volcanic Series).

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Table of Contents:

Note —Downloads of the papers below are free. Road logs mini-papers, maps, and other sections are only available in print.

    Papers:

  1. Generalized geology and structure of Trans-Pecos Texas and adjacent Republic of Mexico
    — William N. McAnulty, pp. Map.
  2. First day: Road log from Van Horn to Guadalupe Mountains to the Duval Frasch Sulphur Operation in Culberson County to Seven Heart Gap and return to Van Horn
    — John M. Hills and W. N. McAnulty, pp. 1-17.
  3. Second day: Road log from Van Horn to Tumbledown Moutnain, Hazel Mine, Southern Wylie Mountains and return to Van Horn
    — W. N. McAnulty and Jerry M. Hoffer, pp. 19-25.
  4. Third day: Road log from Van Horn to Allamoore to Eagle Moutnains to Quitman Mountains
    — W. N. McAnulty and Jerry M. Hoffer, pp. 27-40.
  5. Supplemental road log no. 1: Quitman Mountains to New Mexico State line along I-10
    — William S. Strain, pp. 41-42.
  6. Supplemental road log no. 2: Van Horn to Toyah, Texas via I-10 and I-20
    — Bruce T. Pearson, pp. 43-47.
  7. Supplemental road log no. 3: Van Horn to Alpine, Texas
    — F. W. Daugherty and P. W. Dickerson, pp. 48-52.
  8. Mini-papers:

  9. Scenes from the past - VII
    — W. L. Hiss, pp. 55-56.
  10. Physiographic features, Trans-Pecos region (662 KB PDF)
    — James R. Underwood Jr., pp. 57-58. [ABSTRACT]
  11. Geology of Tumbledown Mountain (1.16 MB PDF)
    — Philip B. King, pp. 59-62. [ABSTRACT]
  12. Superposed deformation in the Santiago and northern Del Carmen Mountains, Trans-Pecos Texas (1.35 MB PDF)
    — Robert C. Cobb and Stephen Poth, pp. 71-76. [ABSTRACT]
  13. Quaternary faulting in Salt Basin Graben, West Texas (2.19 MB PDF)
    — Lisa K. Goetz, pp. 83-92. [ABSTRACT]
  14. A regional geological and geophysical study of the Delaware Basin, New Mexico and west Texas (1.85 MB PDF)
    — G. Randy Keller, J. M. Hills, and Rabah Djeddi, pp. 105-111.
  15. Texas lineament revisited (2.18 MB PDF)
    — William R. Muehlberger, pp. 113-121. [ABSTRACT]
  16. A preliminary heat flow map of west Texas (997 KB PDF)
    — Bruce Taylor and Robert F. Roy, pp. 137-139. [ABSTRACT]
  17. An integrated geological and geophysical study of the Salt Basin Graben, west Texas (2.05 MB PDF)
    — J. H. Veldhuis and G. R. Keller, pp. 141-150. [ABSTRACT]
  18. Precambrian geology of the Van Horn area, Texas (0.99 MB PDF)
    — Donald M. Davidson Jr., pp. 151-154. [ABSTRACT]
  19. Pre-Bliss rocks in the Van Horn region, Trans-Pecos Texas (1.13 MB PDF)
    — Rodger E. Denison, pp. 155-158. [ABSTRACT]
  20. Occurrence of Ostrea beloiti logan in Cenomanian rocks of Trans-Pecos Texas (1.04 MB PDF)
    — W. A. Cobban and S. C. Hook, pp. 169-172. [ABSTRACT]
  21. Origin of castiles on the Gypsum Plain of Texas and New Mexico (1.47 MB PDF)
    — Douglas W. Kirkland and Robert Evans, pp. 173-178. [ABSTRACT]
  22. Geology of the Eagle Mountains, Hudspeth County, Texas (2.49 MB PDF)
    — James R. Underwood Jr., pp. 183-193. [ABSTRACT]
  23. Geochronology of the Trans-Pecos Texas volcanic field (1.85 MB PDF)
    — John Andrew Wilson, pp. 205-211. [ABSTRACT]
  24. Cenozoic igneous rocks, Sierra Blanca area, Texas (1.23 MB PDF)
    — Daniel S. Barker, pp. 219-223. [ABSTRACT]
  25. The Square Peak volcanic series, norhtern Quitman Mountains, Hudspeth County, Texas (1.41 MB PDF)
    — Thomas M. C. Hobbs and Jerry M. Hoffer, pp. 231-235. [ABSTRACT]
  26. Tertiary volcanics of the western Eagle Mountains, Hudspeth County, Texas (990 KB PDF)
    — Jerry M. Hoffer, Bob D. Leggett, and Dan E. Verrillo, pp. 237-240. [ABSTRACT]
  27. Uranium assessment along the Precambrian unconformity, Van Horn area, Texas (1.32 MB PDF)
    — Donald M. Davidson Jr., Gerald Edwards, and Philip C. Goodell, pp. 251-256.
  28. Mineralization in the northenr Quitman Mountains, Hudspeth County, Texas (925 KB PDF)
    — David H. Murry, pp. 267-270.
  29. General survey of the oil and gas prospects of Trans-Pecos Texas (1.32 MB PDF)
    — Bruce T. Pearson, pp. 271-275.
  30. Giant desiccation polygons in Wildhorse Flat, west Texas (987 KB PDF)
    — Lisa K. Goetz, pp. 285-287.
  31. The modern vertebrate fauna of the Van Horn country (722 KB PDF)
    — Arthur H. Harris, pp. 295-297.
  32. Vegetation of Trans-Pecos Texas (4.32 MB PDF)
    — A. Michael Powell, pp. 299-302.
  33. History of Van Horn, Texas and Van Horn Wells (2.20 MB PDF)
    — Robin J. Hoffer, pp. 303-304.
  34. Land use in the Basin and Range topographic province of Trans-Pecos Texas (6.32 MB PDF)
    — William J. Lloyd and Robert H. Schmidt Jr., pp. 305-310.
  35. Eagle Spring Station on the San Antonio-San Diego Mail Line (1.00 MB PDF)
    — James R. Underwood Jr., pp. 311-314.