Geochemical provenance of anomalous metal concentrations in stream sediments in the Ashton 1:250,000 quadrangle, Idaho/Montana/Wyoming
Stream-sediment samples from 1500 sites in the Ashton, Idaho/Montana/Wyoming 1:250,000 quadrangle were analyzed for 45 elements. Almost all samples containing anomalous concentrations (exceeding one standard deviation above the mean value of any element) were derived from drainage basins underlain by Quaternary rhyolite, Tertiary andesite or Precambrian gneiss and schist. Aluminum, barium, calcium, cobalt, iron, nickel, magnesium, scandium, sodium, strontium, and vanadium have no andesite provenance. Most anomalous manganese, europium, hafnium, and zirconium values were derived from Precambrian rocks. All other anomalous elemental concentrations are related to Quaternary rhyolite. This study demonstrates that multielemental stream-sediment analyses can be used to infer the provenance of stream sediments. Such data are available for many parts of the country as a result of the National Uranium Resource Evaluation. This study suggests that stream-sediment samples collected in the Rocky Mountains can be used either as pathfinders or as direct indicators to select targets for mineral exploration for a host of metals.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5028199
- Report Number(s):
- LA-UR-82-2279; CONF-820932-1; ON: DE82019553; TRN: 82-019247
- Resource Relation:
- Conference: Wyoming Geological Survey conference, Mammoth Hot Springs, WY, USA, 15 Sep 1982; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Uranium hydrogeochemical and stream sediment reconnaissance of the Lander NTMS Quadrangle, Wyoming, including concentrations of forty-three additional elements
National Uranium Resource Evaluation: Ashton Quadrangle, Idaho, Montana, and Wyoming
Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
IDAHO
GEOCHEMICAL SURVEYS
GEOLOGY
MONTANA
SEDIMENTS
STREAMS
WYOMING
ALUMINIUM
ANTIMONY
ARSENIC
BARIUM
BERYLLIUM
BISMUTH
CADMIUM
CALCIUM
CERIUM
CHLORINE
CHROMIUM
COBALT
COPPER
DYSPROSIUM
EUROPIUM
EXPLORATION
HAFNIUM
IRON
LEAD
LITHIUM
LUTETIUM
MANGANESE
MINERALS
MULTI-ELEMENT ANALYSIS
NICKEL
NIOBIUM
POTASSIUM
RUBIDIUM
SAMARIUM
SCANDIUM
SILVER
SODIUM
STRONTIUM
TANTALUM
TERBIUM
THORIUM
TITANIUM
TUNGSTEN
URANIUM
VANADIUM
YTTERBIUM
ZINC
ZIRCONIUM
ACTINIDES
ALKALI METALS
ALKALINE EARTH METALS
CHEMICAL ANALYSIS
ELEMENTS
FEDERAL REGION VIII
FEDERAL REGION X
HALOGENS
METALS
NONMETALS
NORTH AMERICA
RARE EARTHS
SEMIMETALS
SURFACE WATERS
SURVEYS
TRANSITION ELEMENTS
USA
580400* - Geochemistry- (-1989)
050200 - Nuclear Fuels- Exploration- (-1987)
580100 - Geology & Hydrology- (-1989)