太行山南缘晚更新世以来河流阶地的发育及其新构造运动意义

现代地质 ›› 2013, Vol. 27 ›› Issue (4): 791-798.

太行山南缘晚更新世以来河流阶地的发育及其新构造运动意义

张蕾1,2，张绪教1，武法东1，何泽新1，田珺1，于航1，王春林3，刘江红3

(1.中国地质大学地球科学与资源学院，北京100083；2.国土资源实物地质资料中心，河北三河065201； 3.山西陵川县国土资源局，山西陵川048300)

出版日期:2013-08-10 发布日期:2013-08-07
作者简介:张蕾，女，硕士，1988年出生，第四纪地质学专业，从事地貌与新构造运动、地质公园方面的研究。Email：zhanglei871126@126.com。
基金资助:
国家财政部与国土资源部“2011年国家级地质遗迹保护”项目(1212010712910)

River Terraces Development and Significance of Neotectonic Movement on the Southern Margin of Taihang Mountains since Late Pleistocen

ZHANG Lei ^1，2，ZHANG Xu-jiao1，WU Fa-dong1，HE Ze-xin1，TIAN Jun1，YU Hang1， WANG Chun-lin3，LIU Jiang-hong3

(1.School of Earth Sciences and Resources, China University of Geosciences，Beijing100083, China；2.Cores and Samples Center of Land and Resources，China Geological Survey，Sanhe，Hebei065201，China；3.Lingchuan Bureau of Land and Resources, Lingchuan, Shanxi048300，China)

Online:2013-08-10 Published:2013-08-07
Contact: 张绪教，男，副教授，1964年出生，第四纪地质学专业，从事地貌与第四纪地质、新构造运动的教学及科研工作。

摘要/Abstract

摘要：

太行山南缘的武家湾河流经太行山与华北平原两大地貌单元的过渡地带，较太行山内部其他水系对新构造运动的响应更为敏感，能较好地记录区域地壳抬升历史。以武家湾河下游平甸河为研究重点，通过野外河流阶地级序及沉积特征的调查并结合光释光（OSL）测年结果，厘定了平甸河4级河流阶地，T4、T3、T2及T1阶地河拔高度分别为61～96 m、35～54 m、19～43 m、3～5 m，分别形成于974 kaBP、739 kaBP、483 kaBP、23 kaBP，根据对阶地成因的探讨，认为T4、T3、T2阶地为构造阶地，T1阶地为气候阶地，阶地资料揭示晚更新世（Qp3）太行山南缘经历3次间歇性构造抬升后至少隆升了90 m: 第一次抬升26～42 m、抬升速率111～179 mm/a，第二次抬升11～27 m、抬升速率043～105 mm/a，第三次抬升16～39 m、抬升速率035～085 mm/a。本研究为河流阶地对新构造运动的响应研究提供了实际材料，对晚更新世太行山的形成及演化研究具有较重要的参考价值。

关键词: 太行山；平甸河；晚更新世(Qp3), 河流阶地；光释光（OSL）测年；新构造运动

Abstract:

The responding to neotectonic movement in Wujiawan River, which runs through transition area of two geomorphic units of Taihang Mountains and the North China Plain, is more sensitively than other water systems in Taihang Mountains, so it can record the history of uplift better. By the field investigation of sequence and sedimentary features, dating of optical stimulated luminescence(OSL), the conclusions can be reached that there are four levels of river terraces in Pingdian River, the lower reaches of Wujiawan River, T4, T3, T2 and T1 terraces heights are 61-96 m, 35-54 m,19-43 m and 3-5 m, and ages are 97.4 kaBP, 73.9 kaBP, 48.3 kaBP and 2.3 kaBP respectively. After investigation the causes of river terraces, T4, T3, T2 terraces should be the results of tectonic uplift, otherwise T1 is climatic terrace. It reveals that the amplitude of uplift of the area is 90 m at least after three stages of stable sedimentation and rapid uplift since Late Pleistocene(Qp3), the amplitude and the rate of uplift are 26-42 m and 1.11-1.79 mm/a, 11-27 m and 0.43-1.05 mm/a, 16-39 m and 0.35-0.85 mm/a. This study is of great value, which provides actual material for the research of river terrace and neotectonic movement on the southern margin of Taihang Mountains.

Key words: Taihang Mountains；Pingdian River；Late Pleistocene(Qp3), river terrace；OSL dating；neotectonic movement

中图分类号:

张蕾，张绪教，武法东，何泽新，田珺，于航，王春林，刘江红. 太行山南缘晚更新世以来河流阶地的发育及其新构造运动意义[J]. 现代地质, 2013, 27(4): 791-798.