Acta Geographica Sinica ›› 2009, Vol. 64 ›› Issue (1): 21-32.doi: 10.11821/xb200901003

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Age and Genesis of the Danxia Landform on Jianglang Mountain, Zhejiang Province

ZHU Cheng1, PENG Hua2, LI Zhongxuan1, ZHANG Guangsheng1, LI Lan1, YU Jinbiao1, ZHU Guangyao3, OUYANG Jie1, ZHONG Yishun4, ZHU Qing1, ZHOU Shunqin5, ZHENG Chaogui4, ZHOU Riliang6, LI Dong5, ZHU Yuming5, LV Wen1, WU Honglin7   

  1. 1. School of Geographic and Oceanographic Sciences,Nanjing University,Nanjing 210093,China;
    2. Department of Geography,Sun Yat-sen University,Guangzhou 510275,China;
    3. Department of Humanities and Social Sciences,Bengbu College,Bengbu 233050,Anhui,China;
    4. Department of Geography,Chuzhou University,Chuzhou 239012,Anhui,China;
    5. Scenery Tourism Authority of Jiangshan City,Jiangshan 324100,Zhejiang,China;
    6. Zhejiang Construction Bureau,Hangzhou 310027,China;
    7. College of Urban and Environmental Sciences,Peking University,Beijing 100871,China
  • Received:2008-07-25 Revised:2008-11-02 Online:2009-01-25 Published:2009-01-25
  • Supported by:

    National Natural Science Foundation of China, No.40871014;Foundation of application of the World Natural Relics (WNR) from Zhejiang Province and Foundation of Modern Analyses Center of Nanjing University

Abstract:

The Jianglang Mountain is situated at the transitional zone of South China fold-system, Jiangshan-Shaoxing deep rip belt and Baoan-Xiakou-Zhangcun rip belt. The formation of the Xiakou basin was a result of the tensioning of the above mentioned two rips in early Cretaceous, afterward, series deposits such as Guantou formation (K1g), Chaochuan formation (K1c) and Fangyan formation (K1f) which belong to Yongkang group, lower Cretaceous phase, were gradually built, whilst the rips occurred to extrude and the basin began to rise in late Cretaceous. Meanwhile, amounts of tension fissures and joints have been produced since Cenozoic, accelerating down-cutting velocity in base rock. Consequently, landform-building activities such as weathering, eroding and collapsing etc. were prevalent as finally to develop the Danxia landform. The main sceneries to apply for world natural relics are relying on unique and unparalleled peak, split valley with vivid stones and reviving of platform. What is more, it is significant to study lithology, stratigraphy and paleo-biology. According to dating for specimen of dolerite vein through the Yongkang group of Mt. Yafeng by K-Ar method, this article revealed the uplift age of red-bed basin to be 77.89±2.6 Ma BP (K2), i.e., late Cretaceous, the first chronological datum of Danxia landform research in China.

Key words: Zhejiang, Jianglang Mountain, Danxia landform, landform development, landform genesis