New Mexico Geological Society
Fall Field Conference Guidebook – 70
Geology of the Raton-Clayton Area


Frank Ramos, Matthew J. Zimmerer, Kate Zeigler, and Dana S. Ulmer-Scholle, [editors]
2019, 168 pages.

Welcome to the subtle landscape of the High Plains of northeastern New Mexico. Referred to as the Hi-Lo Country, this region includes a history of volcanism encompassed by the Raton-Clayton volcanic field, as well as exposures of Mesozoic and Cenozoic sedimentary rocks that not only record part of the story of past landscapes, but also hold the key to groundwater resources in this oft-forgotten corner of New Mexico. The geology of Union and Colfax Counties may look simple from the highway, but these grasslands host a richness of canyons, mesas and volcanic peaks with a fascinating geologic history.

There are two versions of this guidebook available, the complete guidebook (168 pages), and a version with just the road logs that is spiral bound (46 pages).

ISBN: 1-58546-110-5

Softcover: $65.00 Buy Now
Softcover: $19.95 Buy Now
Contains road logs and mini-papers only, spiral bound.

Table of Contents:

Note —Downloads of the papers below are only available to current members (you must login first). Road logs mini-papers, maps, and other sections are only available in print.

  1. Road Log Day 1 Geology of the Raton-Clayton Area: First-day Road Log from Clayton To Johnson Mesa via Capulin National Monument
    — Matthew J. Zimmerer, Frank C. Ramos, and Kate E. Zeigler, pp. 1-20. [SUMMARY]
  2. Road Log Day 2 Geology of the Dry Cimarron Valley: Second-day Road Log from Clayton to Folsom and through the Dry Cimarron Valley
    — Kate E. Zeigler, Matthew J. Zimmerer, and Frank C. Ramos, pp. 21-34. [SUMMARY]
  3. Road Log Day 3 Mid-tertiary Alkalic Igneous Activity in Northeastern New Mexico — The Eagle Rock Dike: Third-day Road Log from Capulin, US–64/NM–325 Intersection, to the I–25 Intersection of the Eagle Rock Dike
    — Frank C. Ramos, Matthew J. Zimmerer, and Kate E. Zeigler, pp. 35-42. [SUMMARY]
  4. Mini-papers:

  5. A Brief Overview of the Kiowa and Rita Blanca National Grasslands
    — M. Atkinson, pp. 43-46.
  6. Papers:

    Note — To download papers from this guidebook, current members must login first.

  7. Geology of Northeastern New Mexico, union and Colfax Counties, New Mexico: A Geologic Summary
    — Kate E. Zeigler, Frank C. Ramos, and Matthew J. Zimmerer, pp. 47-54. [ABSTRACT]
  8. U-Pb Detrital Geochronology and Provenance Comparisons from the Nonmarine Strata of the Dakota Group, Lytle Sandstone, and Morrison Formation in Northeastern New Mexico
    — Samatha R. Bartnik, Brian A. Hampton, and Greg H. Mack, pp. 55-65. [ABSTRACT] Supplemental Data:
  9. Revising Palynostratigraphic Concepts in the Raton Basin a Half-century after R.H. Tschudy’s Pioneering Work: A New Pollen Proxy for the Campanian-Maastrichtian Stage Boundary and Reevaluation of the Famous K-PG Fern-Spore Spik
    — Keith Berry, Spencer G. Lucas, and Paul L. Sealey, pp. 67-72. [ABSTRACT]
  10. Baculites Baculus Meek and Hayden, 1861 (Earliest Maastrichtian) from the Uppermost Pierre Shale in the Raton basin of Northeastern New Mexico and its Significance
    — Paul L. Sealey and Spencer G. Lucas, pp. 73-80. [ABSTRACT]
  11. The Campanian-Maastrichtian Baculite Zonal Sequence in the Pierre Shale, Berwind Canyon. Las Animas County, Colorado
    — Paul L. Sealey, Keith Berry, and Spencer G. Lucas, pp. 81-88. [ABSTRACT]
  12. Revised Stratigraphic Relationships of the Dakota Group in the Tucumcari Basin, San Miguel County, New Mexico, USA
    — Anna E. Van Yperen, Lina H. Line, John M. Holbrook, Miquel Poyatos-Moré, and Ivar Midtkandal, pp. 89-100. [ABSTRACT]
  13. Carbon Dioxide in the Subsurface of Northeastern New Mexico
    — Ronald F. Broadhead, pp. 101-108. [ABSTRACT]
  14. Mineral Resources in Union County, New Mexico
    — Virginia T. McLemore, pp. 109-116. [ABSTRACT] Supplemental Data:
  15. Proterozoic and Pre-Cenozoic History of the Sierra Grande Uplift and its margins: A Key Piece of the Ancestral Rocky Mountains
    — Thomas E. Ewing, pp. 117-126. [ABSTRACT]
  16. Groundwater Resources of Union County, New Mexico: A Progress Report
    — K.E. Zeigler, B. Podzemny, A. Yuhas, and V. Blumenberg, pp. 127-137. [ABSTRACT]
  17. Geochemistry of Capulin-phase Flows in the Raton-Clayton Volcanic Field
    — Frank C. Ramos, Matthew J. Zimmerer, Kate E. Zeigler, Sidney Pinkerton, and Nick Butterfield, pp. 139-149. [ABSTRACT]
  18. 40Ar/39Ar Geochronology, Vent Migration, and Hazard Implications of the Youngest Eruptions in the Raton-Clayton Volcanic Field
    — Matthew J. Zimmerer, pp. 151-160. [ABSTRACT] Supplemental Data:
  19. Possible Origins of Dikes Exposed in Northeastern New Mexico and Implications for Mid-Tertiary Alkalic Magmatism in the Region
    — Zimmerer, Matthew J., Ramos, Frank C. and Sebastian Orozco, pp. 161-168. [ABSTRACT] Supplemental Data: