The thermoluminescence (TL) of eight Hawaiian basalt flows, ranging in age from 12 to 17,360 years, was studied to test the feasibility of TL as a dating technique. Plagioclase from tholeiitic basalt has a single glow peak at 300°C, and TL peak heights, when they are normalized for susceptibility to radiation and for annual dose from U, Th, and K contained in the rock, show a good linear correlation with the known ages of the flows. The results from two alkalic basalts do not correlate so well with known age, probably because of interference from low‐temperature artificial peaks. The results suggest that TL can be developed into a technique for dating Holocene basalts.
24. Stable isotopic investigation of hydrothermal ore fluids in massive sulfide deposits of the West Shasta Cu-Zn district, California W. H. Casey, B. E. Taylor 25. Genesis of gold-bearing quartz veins of the Allegheny district, California (abs.
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