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A preliminary report on methods of determining the age of Colorado plateau carnotite

Lorin Rollins Stieff·M.N. Girhard·T. W. Stern
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Abstract

Four methods of dating Colorado Plateau carnotite have been examined and evaluated: mineralogic methods, radioactive-equilibrium methods, lead-uranium-ratio methods, and lead-isotope methods. The data on 12 high-grade samples, from a suite of 50 representative carnotite ores, are presented.

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90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: 33.6° to 40.27° latitude; -114.36° to -106.92° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeXRIS

Lorin Rollins Stieff, M.N. Girhard, T. W. Stern. 1950. A preliminary report on methods of determining the age of Colorado plateau carnotite. https://doi.org/10.3133/tei108

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