New Mexico Geological Society
Fall Field Conference Guidebook - 20
The Border Region

cover

Diego A. Cordoba, Sherman A. Wengerd and John Shomaker, eds., 1969, 228 pages.

On behalf of the Executive Committee and members of the New Mexico Geological Society, Inc., I welcome you to our Twentieth Annual Field Conference. The society is indeed honored and fortunate to be able to sponsor this tour in our neighboring State of Chihuahua. The first day road log is from Ciudad Juarez to Nuevo Casas Grandes, via Sierra de Juarez, Sierra Boca Grande, Ascencion, and Janos. Much of this trip is across the broad bolson plains of northwestern Chihuahua where we will learn about the geologic histories of these basins and their potentially important water supplies. The traverse is punctuated by a stop at the southern end of the Juarez Mountains to visit some Lower Cretaceous reefs and at the pass of Sierra Boca Grande where Permian rocks are exposed. The second day road log is from Nuevo Casas Grandes to Chihuahua, via Paquime, San Buenaventura, Mina la Mojina, and Sueco Junction. Geologic highlights include an extensive and variable sequence of volcanic rocks exposed in roadcuts in Sierra de las Tunas. At the Sierra de la Mojina stop we will see a spectacular section of Lower Cretaceous carbonates, an operating manganese mill, and an abandoned silver mine. The third day road log is from Chihuahua to Ciudad Juarez, via Encinillas Basin, Sueco Junction, Villa Ahumada and Sierra del Presidio. Highlighs include "arm waving" at Jurassic and Cretaceous sediments in the Sierra de la Alcaparra, the anticlinal Sierra de Samalayuca with its core of metamorphosed sediments, and highly fossiliferous Lower Cretaceous reef limestones at the north end of Sierra del Presidio.

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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.

  1. First day road log from Ciudad Juarez to Nuevo Casas Grandes, via Sierra de Juarez, Sierra Boca Grande, Ascension, and Janos
    — Diego A. Cordoba, Sherman A. Wengerd, and John W. Shomaker, pp. 1-16.
  2. Second day road log from Nuevo Casas Grandes to Chihuahua, via Paquime, San Buenaventura, Mina La Mojina, and Sueco Junction
    — Diego A. Cordoba, Sherman A. Wengerd, and John W. Shomaker, pp. 17-28.
  3. Third day road log from Chihuahua to Ciudad Juarez, via Encinillas Basin, Sueco Junction, Villa Ahumada and Sierra del Presidio
    — Diego A. Cordoba, Sherman A. Wengerd, and John W. Shomaker, pp. 29-39.
  4. Papers:

    Note — To download papers from this guidebook, you will need a PDF viewer like the free Adobe Acrobat Reader.

  5. History of the United States-Mexican boundary survey--1848-1955 (7.49 MB PDF)
    — Harold L. James, pp. 40-55.
  6. Casas Grandes: A bygone metropolis of the Gran Chichimeca (1.37 MB PDF)
    — Marjorie F. Lambert, pp. 56-60.
  7. Some keys to the geology of northern Chihuahua (1.01 MB PDF)
    — Ronald K. DeFord, pp. 61-65.
  8. The "Alpine Basin and Range Province" of north-central Chihuahua (236 KB PDF)
    — Zoltan de Cserna, pp. 66-67.
  9. Lower Paleozoic rocks in the El Paso area (1.02 MB PDF)
    — David V. LeMone, pp. 68-79.
  10. Microfacies of Pennsylvanian and Wolfcampian strata in southwestern U.S.A. and Chihuahua, Mexico (3.92 MB PDF)
    — James L. Wilson, A. Madrid-Solis, and R. Malpica-Cruz, pp. 80-90.
  11. Mesozoic stratigraphy of northeastern Chihuahua, Mexico (856 KB PDF)
    — Diego A. Cordoba, pp. 91-96.
  12. Ammonite zones of northern Chihuahua (801 KB PDF)
    — Keith Young, pp. 97-101.
  13. Pluvial Lake Palomas, northwestern Chihuahua, Mexico (2.22 MB PDF)
    — Reeves, Corwin C., Jr., pp. 143-154.
  14. Late Cenozoic strata of the El Paso-Juarez area (284 KB PDF)
    — William S. Strain, pp. 155-157.
  15. Stratigraphic study of the Sierra Santa Rita (1.66 MB PDF)
    — Ing. Jorge Tovar, pp. 165-170.
  16. Stratigraphy of Sierra Banco de Lucero, State of Chihuahua (235 KB PDF)
    — Jose C. Guerrero, pp. 171-172.
  17. Mesozoic stratigraphy of Sierra de la Alcaparra, northeastern Chihuahua (266 KB PDF)
    — Rafael Rodriguez Torres, pp. 173-175.
  18. Geology of Sierra de Samalayuca, Chihuahua, Mexico (894 KB PDF)
    — Edgar L. Berg, pp. 176-181.
  19. Key oil tests and stratigraphic sections in southwest New Mexico (1.09 MB PDF)
    — Frank E. Kottlowski, Roy W. Foster, and S. A. Wengerd, pp. 186-196.
  20. Geologic history and the exploration for oil in the border region (1.00 MB PDF)
    — Sherman A. Wengerd, pp. 197-204.
  21. The manganese metallogenic province in the state of Chihuahua, Mexico (720 KB PDF)
    — Carlos Garcia-Gutierrez and Luis Garcia-Gutierrez, pp. 205-206.
  22. Terrenates manganese district, Chihuahua, Mexico (385 KB PDF)
    — McAnulty, W. N., Sr., pp. 207-208.
  23. Ground-water occurrence of the El Paso area and its related geology (1.28 MB PDF)
    — Tom Cliett, pp. 209-214.