Escalante 1/sup 0/ x 2/sup 0/ NTMS area Utah: data report (abbreviated)

Technical Report · Fri Aug 01 04:00:00 EDT 1980

OSTI ID:6890951

Heffner, J D

Surface sediment samples were collected at 637 sites, at a target sampling density of one site per 16 square kilometers. Ground water samples were collected at 35 sites. Neutron activation analysis results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water. Mass spectrometry results are given for helium in ground water. Data from ground water sites include: (1) water chemistry measurements, and (2) physical measurements and scintillometer reading); and (3) elemental analyses (U, Al, Br, Cl, Dy, F, He, Mg, Mn, Na, and V). Data from sediment sites include: (1) stream water chemistry measurements from sites where water was available; and (2) elemental analyses (U, Th, Hf, Al, Ce, Dy, Eu, Fe, La, Lu, Mn, Sc, Sm, Na, Ti, V, and Yb). Sample site descriptors are given. High uranium values are scattered around uranium mines and prospects in the White Canyon and Henry Mountains areas. Other known uranium occurrences in the Monument Valley and Waterpocket Fold areas are not seen in the data because the National Park Service and the Navajo Nation restricted sampling and publication of data from their lands. Two groups of high uranium values are not related to known deposits. These groups are located on the Kaiparowits Plateau, and in the Escalante Mountains and adjacent Aquarius Plateau. The sites with high uranium values on the Kaiparowits Plateau are underlain by the Straight Cliffs Formation and the Wahweap Sandstone, both of which are fluvial sandstones with conglomeratic layers. Many sites in this group have higher-than-average vanadium values and a few have high U/Th and U/Hf ratios. The sites in the Escalante Mountains and the Aquarius Plateau with high uranium values are underlain by the tuff of Osiris. These sites also show high V, Ti, Fe, Mn, Sc, Na, and Al values; high scintillometer readings; high U/Hf ratios; and moderate U/Th ratios.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
• DOE Contract Number: AC13-76GJ01664
• OSTI ID: 6890951
• Report Number(s): GJBX-209(80); DPST-80-146-8
• Country of Publication: United States
• Language: English

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