Uranium hydrogeochemical and stream sediment reconnaissance data from the area of the Noatak and portions of the Baird Mountains and Ambler River Quadrangles, Alaska
During August 1976, a total of 876 natural waters and 861 bottom sediments were collected at a nominal density of one location each 23 km/sup 2/ from streams and small lakes throughout the Noatak NTMS quadrangle, the southern two-thirds of the Baird Mountains NTMS quadrangle, and in the southwest corner of the Ambler River NTMS quadrangle. These samples were collected as part of the National Uranium Resource Evaluation program in Alaska being conducted by the Los Alamos Scientific Laboratory (LASL). The field collection and treatment of the samples were performed following strict LASL specifications. Total uranium was measured in the waters by fluorometry and in the sediments by delayed-neutron counting, using stringent quality assurance controls at the LASL. The uranium contents of the waters ranged from below the detection limit of 0.02 parts per billion (ppB) to a high of 8.38 ppB, and the uranium contents of the sediments ranged from a low of 0.3 parts per million (ppM) to a high of 34.0 ppM. In general, the locations of waters containing relatively high uranium contents were found to occur in clusters, and particularly in the headwaters of streams draining the southern slopes of the Baird Mountains. Few sediments contained relatively high uranium contents. These usually occurred singly at isolated locations scattered throughout the area. No obvious association exists between the location of high-uranium waters and sediments anywhere in the study area. The geology, mineralogy, and hydrology of this area is only generally described in the literature; therefore, it is difficult to correlate these data with particular aspects of the physical environment where individual samples were collected. However, the data do indicate that certain areas underlaid by Paleozoic sedimentary rocks and granitic intrusives within the Baird Mountains and a quartz-pebble conglomerate in the Waring Mountains may warrant more detailed field investigations.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6942447
- Report Number(s):
- LA-6846-MS; GJBX-87(78); TRN: 78-016021
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALASKA
URANIUM DEPOSITS
GEOCHEMICAL SURVEYS
DATA COMPILATION
DELAYED NEUTRON ANALYSIS
EXPLORATION
GEOLOGY
HYDROLOGY
MINERALOGY
PALEOZOIC ERA
PROSPECTING
SEDIMENTS
STREAMS
CHEMICAL ANALYSIS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
NONDESTRUCTIVE ANALYSIS
NORTH AMERICA
NUCLEAR REACTION ANALYSIS
PACIFIC NORTHWEST REGION
RESOURCES
SURFACE WATERS
USA
050200* - Nuclear Fuels- Exploration- (-1987)