湖北宜昌第四纪沉积物中铁质重矿物特征对三峡贯通的指示*
由文智1, 向芳2,3, 杨坤美1, 姜月华4, 喻显涛2, 李磊1

Implication of iron rich heavy minerals in Quaternary sediments in Yichang area of Hubei Province for cutting through time of Three Gorges
You Wen-Zhi1, Xiang Fang2,3, Yang Kun-Mei1, Jiang Yue-Hua4, Yu Xian-Tao2, Li Lei1
宜昌地区沉积物015、021、017、024、00B、025样品铁质重矿物的特征背散射图像(Ⅰ) a—015样品中均一结构含钛赤铁矿;b—015样品中赤铁矿包裹磷灰石;c—021样品中钛铁矿、锐钛矿和赤铁矿出溶铁质矿物;d—021样品中均一结构赤铁矿;e—021样品中赤铁矿包裹磷灰石;f—017样品中均一结构钒钛磁铁矿;g—017样品中含钛赤铁矿包裹磷灰石; h—017样品中赤铁矿与钙长石出溶;i—024样品中均一结构赤铁矿