水下沉积物重力流与海底扇相模式研究进展

傅焓埔, 刘群, 胡修棉

Review on Subaqueous Sediment Gravity Flow and Submarine Fan

Hanpu Fu, Qun Liu, Xiumian Hu

图3 水下沉积物重力流沉积的野外照片 (a) 发育鲍马序列的浊流沉积，Ta发育正粒序，Tb发育平行层理，Tc发育交错层理，Td发育水平层理；(b)块状厚层砂岩，无粒序；(c) 碎屑流沉积与浊流沉积，其中碎屑流沉积含大量杂乱无序的碎屑[36]；(d) 混合流沉积，见“三明治结构”，由底部的浊流沉积、中间的碎屑流沉积和顶部较为稀释的浊流沉积组成

Fig.3 Field photographs of subaqueous sediment gravity flow deposits (a) Turbidite with Bouma sequence, Ta with normal grading, Tb with parallel bedding, Tc with cross bedding, Td with horizontal bedding； (b) Massive turbidite with non-grading； (c) Debrite and turbidite, of which the debrite comprise many disordered clasts[36]； (d) Hybrid event bed with bottom turbidite, middle debrite and upper dilute turbidity current deposits