卵石层,大卵石层,巨砾层;
For the first time, we make use of thermoluminescence technique to demarcate variegation boulder bed which is the district corresponding period sediment guiding bed, the top appear multilayer ash tuff which have similar thermoluminescence parameter;
首次利用热释光技术标定了杂色砾岩层为区域同期沉积的标志层,其上部出现的多层凝灰岩具有相似的热释光参数;
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