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Title Uranium hydrogeochemical and stream sediment reconnaissance of the Tularosa NTMS Quadrangle, New Mexico
Creator/Author Broxton, D.E.
Publication Date1978 Jun 01
OSTI IdentifierOSTI ID: 6709516
Report Number(s)LA-7217-MS;GJBX-104(78)
DOE Contract NumberW-7405-ENG-36
Resource TypeTechnical Report
Resource RelationPortions of document are illegible
Research OrgLos Alamos Scientific Lab., NM (USA)
Subject050200 -- Nuclear Fuels-- Exploration-- (-1987); ;NEW MEXICO-- GEOCHEMICAL SURVEYS;URANIUM DEPOSITS-- EXPLORATION; SEDIMENTS;STREAMS;WATER
Related SubjectGEOLOGIC DEPOSITS;HYDROGEN COMPOUNDS;NORTH AMERICA;OXYGEN COMPOUNDS;RESOURCES;SOUTHWEST REGION;SURFACE WATERS;USA
Description/Abstract A total of 338 water and 1877 sediment samples were collected over a 20,700-km/sup 2/ area from 2125 locations at a nominal density of one sample per 10 km/sup 2/.^Water samples were collected from wells, streams, springs, and artificial ponds.^Sediment samples were collected from streams, springs, natural ponds, and artificial ponds.^Arbitrary anomaly thresholds of two standard deviations above the mean were chosen for both water and sediment sample populations.^The U concentrations in waters collected in the Tularosa quadrangle range from below the detection limit of 0.2 parts per billion (ppB) to 57.8 ppB.^Most clusters of water samples containing anomalously high uranium concentrations were collected from locations in uplifts underlain either by volcanic rocks of the mid-Tertiary Datil group or by sedimentary rocks of late Paleozoic and Mesozoic age.^Other groups of anomalous waters are from wells that tap Cenozoic aquifers in the intermontane basins.^In those areas where the water-sample location coverage is adequate, the known U occurrences are generally associated with high or anomalous U concentrations in water samples.^With the exception of one sample with a U concentration of 67.7 ppM, sediments collected in this study have U concentrations that range between 0.2 and 15.2 ppM.^Most sediments with U concentrations above the arbitrary anomaly threshold value are from locations which occur in or parallel outcrops of Precambrian crystalline rock exposed in the San Andres and Oscura Mountains.^Other anomalous sediments occur as more discreet groups in areas underlain by mid-Tertiary volcanic rocks of the Datil group.^Several anomalous samples from the Mogollon-Datil volcanic field were collected along ring fracture systems that surround large volcanic cauldrons.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 87
AvailabilityDep. NTIS, MF A01.
System Entry Date2001 May 13

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