Cumulate plagioclase appears abruptly at the base of the F unit, which rests on an erosional disconformity .

堆积斜长石在位于侵蚀假整合之F元基底突然现。

Based on isostasy principle, this paper made out a correction method for the calculation of disconformity erosion amount.

考虑地壳均，可以对传统地层剥蚀量计算方法进一步修正。