Mineralogy and major-element chemistry of volcanic ash of ODP Site 131-808@en
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Mineralogical and major-element compositions of 72 samples of volcanic ash, recovered from Site 808 at Nankai Trough during Leg 131, were analyzed in relation to the early diagenetic alteration. Alteration products are first observed at the following depths: smectite, 200 mbsf; clinoptilolite, 646 mbsf; and analcite, 810 mbsf. […]
针对南海海槽（Nankai Trough）第131航次（Leg 131）808站位（Site 808）采集的72份火山灰样品的矿物学组成与主量元素组成展开分析，以探究其早期成岩蚀变特征。研究首次在以下深度观测到蚀变产物：蒙脱石（smectite）见于200海底以下米（meters below seafloor，mbsf），斜发沸石（clinoptilolite）见于646 mbsf，方沸石（analcite）见于810 mbsf。[…]
创建时间：
2026-04-18
