太行山、燕山主要隆起于第四纪

THE TAIHANG AND YAN MOUNTAINS ROSEMAINLY IN QUARTERANARY

摘要: 太行山、燕山山地中的深切曲流河谷形成于第四纪。它是在上新世曲流宽谷的基础上深切形成。上新世曲流宽谷代表该时期的太行山、燕山还是一个丘陵-宽谷平原的地貌。如今已上升成为海拔1300m~2200m 的山地。说明太行山、燕山主要隆起于第四纪。其隆起幅度分别是1100m~1500m 和600~1000m,隆起速度分别是0.44~0.60m m/a 和0.24~0.40m m/a。第四纪隆起幅度均占该山地总隆起幅度的60%~70%。

Abstract: In the Tathang and Yan Mountains,incised and meandering valleys formed in Quarternary.Incised valleys formed on the basis of meandering and broad valley of Pliocene epoch.The meandering and broad valleys of Pliocene epoch indicated that the Taihang and Yan Mountains were the geomorphologic landscape of hills and broad plam in that cpoch.At present,they have risen and fomred the mountains at the levels of 1300~2200m.Above evolution of landform showed that the Taihang and Yan Mountains rose mainly in Quarternary.The upliftcd cxtent is respcectively 110~1500m and 600~1000m,the upliftod rate is respcctively 0.44~0.60mm/a and 0.24~0.40mm/a.The uplifted extent in Quarternary accounts for 60~70% of the total uplifted quantity.