坳陷湖盆三角洲前缘
depressed-type lacustrine delta front
辫状河三角洲前缘
braided river delta front
braided stream delta front
三角洲前缘沉积
the front-delta deposition
三角洲前缘亚相
Delta front intrafacies
Delta front subfacies
leading edge sub-faces of delta
delta front sub-facies
三角洲前积层理
delta foreset stratification
三角洲前积分层
delta foreset stratification