Stratigraphy and paleoenvironments of the Hagan Basin, north-central New Mexico
Raymond V. Ingersoll
The purpose of this paper is to summarize present knowledge of the stratigraphy and paleoenvironments of the Phanerozoic section exposed in the Hagan basin, north-central New Mexico (fig. 1). Excellent exposures of Mississippian through Quaternary strata occur in this area in a homoclinal structure that tilts the section east and northeast at the northeast end of the Sandia uplift, a Neogene fault block formed concurrently with rifting. Structural and intrusive events within the Hagan basin complicate stratigraphic interpretations and correlations (Beaumont, this guidebook; Black, this guidebook; Kelley, 1977; Kelley and Northrop, 1975). Nonetheless, this is one of the most complete exposures of the Phanerozoic section in New Mexico.
Most of the information presented here is a condensation of Kelley and Northrop (1975, p. 28-76), with additions and modifications based on subsequent work.
- Ingersoll, Raymond V., 1979, Stratigraphy and paleoenvironments of the Hagan Basin, north-central New Mexico, in: Santa Fe Country, Ingersoll, Raymond V.; Woodward, Lee A.; James, H. L., New Mexico Geological Society, Guidebook, 30th Field Conference, pp. 197-200.