Tabular Uranium Ore in Poison Canyon Area, Morrison Formation, San Juan Basin, and Application of Lacustrine-Humate Model: ABSTRACT

Turner-Peterson, Christine E.

doi:10.1306/2f9192ec-16ce-11d7-8645000102c1865d

Cited by 1 publication

(4 citation statements)

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“…3; Zitting et al, 1957;Hilpert and Corey, 1956;Hilpert and Freeman, 1956;Hilpert, 1969). There has been a controversy among economic geologists as to whether the Poison Canyon sandstone is the uppermost sandstone unit at the top of the Westwater Canyon Member (Santos, 1963;Tessendorf, 1980; or the lowermost sandstone at the base of the Brushy Basin Member (Hilpert, 1963;Turner-Peterson et al, 1980;Turner-Peterson, 1985;Bell, 1986;Dahlkamp, 2010). Furthermore, other economic geologists (Hoskins, 1963) use this name to designate any persistent sandstone in the Brushy Basin Member in the Ambrosia Lake and Smith Lake subdistricts.…”

Section: Geologic Settingmentioning

confidence: 99%

“…Most of the uranium deposits are near the base of the sandstone, and most of the deposits are found where the Poison Canyon sandstone is greater than 15 m thick (Hilpert, 1969). Paleocurrent studies of the Poison Canyon sandstone indicate predominantly east to northeast current directions, whereas the older upper Westwater Canyon sandstones indicate predominantly east to southeast current directions (Turner-Peterson et al, 1980;Turner-Peterson, 1985). The lower Westwater Canyon sandstones flowed east-southeast (Turner-Peterson et al, 1980;Turner-Peterson, 1985).…”

Section: Geologic Settingmentioning

confidence: 99%

“…The regional presence of extensive zeolites in the Brushy Basin Member was previously interpreted to represent deposition in a shallow alkaline lake (Lake T'oo'dichi'; Turner- Peterson, 1980Peterson, , 1985Turner-Peterson and Fishman, 1991;Demko et al, 2004;Turner, 2010a,b), but re-evaluation of the geochemistry and sedimentology has led to a revised interpretation. Revised interpretations have redefined Lake T'oo'dichi' as widespread, discontinuous wetlands of isolated ponds and marshes Turner, 2004) fed by groundwater from a regional aquifer (Dunagan and Turner, 2004;Turner, 2010a,b;.…”

Section: Geologic Settingmentioning

confidence: 99%

“…The Westwater Sandstone Member is thinner in the Laguna area compared to the Ambrosia Lake area (Hilpert, 1969). Westwater Canyon sandstones exhibit features typical of a fluvial environment, whereas the siltstones and shales are typical of overbank and lacustrine environments (Turner-Peterson, 1980). Shales of the Brushy Basin Member locally interfinger with the Westwater Canyon Member.…”

Section: Geology Stratigraphymentioning

confidence: 99%

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Geology of the Mount Taylor area

Frey¹,

Kelley²,

Zeigler³

et al. 2020

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We gratefully dedicate this special publication about the geology of the Mount Taylor area to the Pueblo of Laguna. The Pueblo has supported and participated in both geologic and environmental research in and around Mount Taylor and Jackpile Mine. Mount Taylor is an important cultural site to the Laguna community. In addition, the Pueblo has been impacted by mining activities associated with uranium extraction in the area, including at Jackpile Mine.The Pueblo of Laguna has been working with the New Mexico Bureau of Geology and Mineral Resources' mapping program for over a decade. Pueblo approval to access Laguna lands has facilitated the production of six STATEMAP geologic quadrangle maps. These maps were used to compile a geologic map of the Mount Taylor volcano, one of the featured works of the 2021 field conference.The Laguna Environmental & Natural Resources Department (ENRD) also worked closely with several undergraduate and graduate students from New Mexico universities, whose studies focused on uranium mobility and the impact of mining activities at sites such as the Jackpile Mine in northern Laguna Pueblo. ENRD provided escorts, logistics, and site assistance to more than 10 university students and professionals who were participating in "Energize New Mexico," an NSF program dedicated to investigating energy industries that are not carbon emitters. This group of studies, which will also be featured during the 2021 field conference, was preceded by NMT soil and plant studies in the early 2000s and will continue with UNM and NMT health studies.This research direction is indicative of the change in perspective toward mining that Laguna Pueblo has seen in the last one hundred years, from the 1950s "uranium capital of the world" to the modern focus on identifying hazards, remediating sites, and mitigating health effects, a focus described in McLemore et al. (this volume). Mining provided jobs for thousands in McKinley and Cibola counties, including members of the Laguna tribe. Mining also affected the health of citizens within the local communities.The people of Laguna Pueblo have occupied the area since they migrated from Mesa Verde around 1300 A.D. or earlier. Their strong affinity with Mount Taylor, located only about 20 miles from the pueblo, is shared with many indigenous cultures, serving as a spiritual site and for hunting, grazing, farming, and collecting resources. Laguna Pueblo supported what became the successful 2008 designation of Mount Taylor as a Traditional Cultural Property, when the mountain became eligible for listing on the National Register of Historic Places.Thanks to the Pueblo of Laguna for its dedication to this landscape and for their partnerships with the many groups working in the area.

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Section: Geologic Settingmentioning

confidence: 99%

Section: Geologic Settingmentioning

confidence: 99%