Emplacement of shallow intrusions at Goblin Colony and their impact on paleohydrology and alteration, Southern Jemez Mountains, New Mexico
— Fraser Goff, Matthew J. Zimmerer, and Cathy J. Goff, [eds.]

Abstract:

Abstract—Goblin Colony is a recently described area in the southern Jemez Mountains that contains 0.15 km2 of zeolite-altered Tshirege Member of the Bandelier Tuff. The altered tuff (ignimbrite) fills a southwest-trending paleovalley in which preexisting basal-contained sediments provided water for the alteration of the tuff. The southeast side of the paleovalley is bounded by a prominent trachydacite to trachyandesite dike and plug zone that formed a hydrologic barrier to fluid flow. In this short paper, we describe the intrusions, the results of recent 40Ar/39Ar dates on the intrusions, and their impact on paleohydrology and low-temperature alteration of the tuff in the Goblin Colony.


Full-text (1.33 MB PDF)


Recommended Citation:

  1. Goff, Fraser; Zimmerer, Matthew J.; Goff, Cathy J., 2024, Emplacement of shallow intrusions at Goblin Colony and their impact on paleohydrology and alteration, Southern Jemez Mountains, New Mexico, in: New Mexico Geological Society, Guidebook, 74th Field Conference, Karlstrom, Karl E.;Koning, Daniel J.;Lucas, Spencer G.;Iverson, Nels A.;Crumpler, Larry S.;Aubele, Jayne C.;Blake, Johanna M.;Goff, Fraser;Kelley, Shari A., New Mexico Geological Society, Guidebook, 74th Field Conference, pp. 299-302. https://doi.org/10.56577/FFC-74.299

[see guidebook]