| 晚新生代青藏高原岩溶地貌及其演化 |
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| 引用本文： | 高全洲,崔之久,刘耕年,伍永秋,张叶春.晚新生代青藏高原岩溶地貌及其演化[J].古地理学报,2001,3(1):85-90. |
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| 作者姓名： | 高全洲 崔之久 刘耕年 伍永秋 张叶春 |
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| 作者单位： | 中山大学地理学系,广州 510275;
北京大学地理学系,北京 100871 |
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| 基金项目： | 国家自然科学基金资助项目 (批准号 :4990 10 0 2，493710 11) |
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| 摘 要： | 本文在野外考察的基础上并参照洞穴次生方解石的年代资料和有关文献,指出青藏高原目前所见到的岩溶地貌主要是第三纪古岩溶地下部分经后期剥蚀形成的。更新世间冰期至少在高原南部,湿热型岩溶地貌过程得以延续;更新世冰期在灰岩山地冰川槽谷的边缘,冰川融水作用亦可发育小型洞穴。现代灰岩表面一些深度在十数cm以下的平行溶沟则形成于全新世。晚新生代以来青藏高原岩溶地貌经历了一个从低海拔到高海拔、从较低纬度到较高纬度的三维演化过程。
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| 关 键 词： | 晚新生代 青藏高原 岩溶地貌 演化 |
| 修稿时间： | 2000年1月17日 |
LATE CENOZOIC KARST LANDFORMS ON QINGHAI-TIBET PLATEAU AND THEIR EVOLUTION |
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| Gao Quanzhou Cui Zhijiu,Liu Gengnian,Wu Yongqiu,Zhang Yechun.LATE CENOZOIC KARST LANDFORMS ON QINGHAI-TIBET PLATEAU AND THEIR EVOLUTION[J].Journal of Palaeogeography,2001,3(1):85-90. |
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| Authors: | Gao Quanzhou Cui Zhijiu Liu Gengnian Wu Yongqiu Zhang Yechun |
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| Institution: | Department of Geography,Zhongshan University,Guangzhou 510275;
Department of Geography,Peking University,Beijing 100871 |
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| Abstract: | There has been a strong controversy about the origins of the limestone landforms on Qinghai Tibet Plateau for a long time. It is believed that the current limestone karst landforms on the plateau was originated from the Tertiary underground karst. When the plateau was uplifted,the limestones above the Tertiary underground karst were eroded away and the underground karst was exposed.The tropical subtropical type of karstification continued at least on the southern part of the plateau during the Pleistocene inter glacial epoch.This kind of karst landforms is called the old karst in this paper. However, during the Pleistocene glacial epoch, the melting water of the Pleistocene glaciers could form some small scale karst caves along the margin of the glacial valley in the limestone mountains. The parallel oriented karrens on the present limestone surface with a depth no more than 10 cm and so on are the results of the Holocene erosion. These karrens are named modern karst. The karst landforms on the Qinghat Tibet Plateau underwent a distinctive three dimensional evolution process since the Late Cenozoic,i.e.the karst landforms changed from lower altitude and latitude to higher altitude and latitude. |
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| Keywords: | Qinghai Tibet Plateau Late Cenozoic karst landforms evolution |
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