Mineralogy, chemistry and isotope composition of silica sinter deposits from the Upper Geyser Basin, Yellowstone National Park: uranium and thorium isotope data

Sample Analyses: Four samples of silica sinter from Giant and Castle Geysers compo sedof opal-A or opal-A/C were analyzed for U-Th isotopes at USGS laboratories in...样品分析：对取自巨人间歇泉（Giant Geyser）与城堡间歇泉（Castle Geyser）的4件硅华（silica sinter）样品进行分析，这些样品以蛋白石-A（opal-A）或蛋白石-A/C（opal-A/C）为主要组成，相关铀-钍同位素（U-Th isotopes）的测试工作在美国地质调查局（USGS）实验室中开展……