scarp zone meaning in English

悬崖带

The study area is composed of sandstone & conglomerate reservoir of alluvial fan & fan delta , which belong to sha3 lower member and sha4 upper member of lower tertiary of yong " an town oilfield in dongying depression . the target stataum develops in the hanging wall of the synsedimentary fault in the scarp zone of dongying depression . the frequently intense movements result in the variation of sandstone and conglomerate reservoir and the evolution of the time and space of sha3 lower member and sha4 upper member in yong " an town oilfield
研究区是东营凹陷永安镇油田沙三下段、沙四上段的冲积扇和扇三角洲砂砾岩体，目的层发育在东营凹陷陡坡带同生断层的下降盘，因断层多期强烈活动，导致永安镇油田沙三下段、沙四上段的砂砾岩体成因类型多，时空演化变化大，在扇根一带小层对比难度大，给油田开发带来很大的难题，在这种背景下进行流动单元研究难度更大。