The Late Cenozoic uplift of the Liupan Shan,China  

作　　者：宋友桂 方小敏 李吉均 安芷生 苗晓东 

出　　处：《Science China Earth Sciences》2001年第S1期176-184,共9页中国科学（地球科学英文版）

基　　金：the Hundred Talents Project of CAS(Renjiaozi[2000]05), the National Key Projects for Basic Research on the Tibetan Plateau (Grant No. G1998040809) and MOE Key Projects on Sci-Technologic Research.

摘　　要：Based on paleomagnetic measurements and morphostratigraphy of red bed/clay sequences from pediments of the Liupan Shan and the Longdong Basin, the following results are revealed. The red bed/clay sediments became to accumulate at around 8.1 MaBP, which implied that the plantation surface developed since Late Cretaceous was broken by active fault, and its development was terminated. The Liupan Shan began to slightly uplift. The Liupan Shan experienced a small-scale uplift around 5.2 MaBP, inferred from the appearance of fine gravel sediments at that time. Consequently, a pediment was developed. The Liupan Shan accelerated uplift since about 3.8 MaBP at a large scale, which caused the deep incision of the rivers and the termination of fluvial and lacustrine deposition. Meanwhile, typical eolian red clay appeared since then. This uplift process is well correlated and in response to that of the Tibetan Plateau and the mountains around it.Based on paleomagnetic measurements and morphostratigraphy of red bed/clay sequences from pediments of the Liupan Shan and the Longdong Basin, the following results are revealed. The red bed/clay sediments became to accumulate at around 8.1 MaBP, which implied that the plantation surface developed since Late Cretaceous was broken by active fault, and its development was terminated. The Liupan Shan began to slightly uplift. The Liupan Shan experienced a small-scale uplift around 5.2 MaBP, inferred from the appearance of fine gravel sediments at that time. Consequently, a pediment was developed. The Liupan Shan accelerated uplift since about 3.8 MaBP at a large scale, which caused the deep incision of the rivers and the termination of fluvial and lacustrine deposition. Meanwhile, typical eolian red clay appeared since then. This uplift process is well correlated and in response to that of the Tibetan Plateau and the mountains around it.

关 键 词：: MAGNETOSTRATIGRAPHY red clay/bed TECTONIC evolution Liupan Shan LATE Cenozoic. 

分 类 号：P534[天文地球—古生物学与地层学]