Journal of Geographical Sciences >
Age and genesis of the Danxia landform on Jianglang Mountain, Zhejiang Province
Received date: 2008-12-30
Revised date: 2009-04-26
Online published: 2009-10-25
Supported by
National Natural Science Foundation of China, No.40871014; The Open Foundation of the State Key Laboratory of Loess and Quaternary Geology from the Institute of Earth Environment, CAS, No.SKLLQG0817; The Training Foundation of National Basis of Talents, No.J0630535; Foundation of Application of the World Natural Heritage from Zhejiang Province; Foundation of Modern Analyses Center of Nanjing University
Jianglang Mountain is situated at the transitional zone of South China fold-system, Jiangshan–Shaoxing deep fracture zone and Baoan–Xiakou–Zhangcun fracture zone. The forming of the Xiakou basin was attributed to the pull-apart fault depression by the above fractures in earlier Cretaceous, afterward, series deposits such as Guantou formation (K1g), Chaochuan formation (K1c) and Fangyan formation (K1f) which belong to Yongkang group, the lower Cretaceous layer accumulated in the Xiakou basin. In late Cretaceous, the above fractures occurred to extrude and the basin began to uplift, meanwhile, amounts of tension fissures and joints were produced since Cenozoic, which accelerated water-dicing into bed-rock. Consequently, landform-building processing: weathering, eroding and collapsing etc. were prevalent as finally to develop the so-called Danxia landform. The Jianglang Mountain landscape zone of the Danxia landform to apply for world natural relics are relying on unique and unparalleled peak, sky-split valley with vivid stones and reviving of platform. What is more, there is significance of study at lithology, stratigraphy and paleo-biology. According to dating for specimen of ophitic vein through-crossing the Yongkang group of Yafeng Peak by K-Ar method, this article revealed the uplift age of red-bed basin to be 77.89±2.6 MaBP (K2) i.e. late Cretaceous, and it is the first chronological datum of Danxia landform research in China.
ZHU Cheng, PENG Hua, LI Zhongxuan, ZHANG Guangsheng, LI Lan,YU Jinbiao, ZHU Guangyao, OUYANG Jie, ZHONG Yishun, ZHU Qing,ZHOU Shuqin, ZHENG Chaogui, ZHOU Riliang, LI Dong, ZHU Yuming,LV Wen, WU Honglin, XU Longsheng . Age and genesis of the Danxia landform on Jianglang Mountain, Zhejiang Province[J]. Journal of Geographical Sciences, 2009 , 19(5) : 615 -630 . DOI: 10.1007/s11442-009-0615-x
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