WASHINGTON, Sept. 9 (TNSLrpt) -- The U.S. Geological Survey issued Data Report 1227, 'USGS Geochron--A Database of Geochronological and Thermochronological Dates and Data--Technical Documentation,' by Kelly D. Thomson, Ian W. Hillenbrand, Leah E. Morgan, Amy K. Gilmer, Zachary T. Engle, Anna T. Miller and Andy J. Park. The 103-page report, issued in 2026, documents the structure, quality checks and public-access tools for a centralized database of geological dating information drawn fr . . .

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