Denuded by the Indochina movement, the core of the palaeohigh has no cap rocks like the J4 gyprock.
古隆起核部因曾遭受早印支运动强烈的剥蚀,已无嘉四段良好的石膏岩作盖层。
原声例句
夏日走过山间
I therefore climbed the ladders alongside the Vernal Fall, and was pushing forward, determined to go to the top of Liberty Cap rock in my hurry, rather than wait, if I should not meet my friend sooner.
因此,我沿着 Vernal Fall 爬上梯子,向前推进,决心赶快登上 Liberty Cap 岩石的顶部,而不是等待,如果我不早点见到我的朋友的话。
英语百科
Caprock
Caprock or cap rock is a harder or more resistant rock type overlying a weaker or less resistant rock type. Common types of caprock are sandstone and mafic rock types. In processes such as scarp retreat, the caprock controls the rate of erosion of the scarp. As the softer rock is cut away, periodically the caprock shears off. Caprock is also found on the top of mesa formations.