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THE FISSION TRACK AGES OF THE CAVERNOUS RECRYSTALLINE CALCITES IN TIBET PLATEAU AND THEIR GEOMORPHOLOGIC SIGNIFICANCE
Author(s): 
Pages: 61-65
Year: Issue:  3
Journal: MARINE GEOLOGY & QUATERNARY GEOLOGY

Keyword:  裂变径迹次生方解石古岩溶洞穴青藏高原;
Abstract: 古岩溶洞穴中残留的次生方解石晶体可以作为裂变径迹测年的材料.通过测定遍及青藏高原的20组洞穴次生方解石晶体的裂变径迹年代,结果表明,晚第三纪青藏高原的古岩溶过程和缓慢构造抬升过程相伴进行,其间在大约10 MaB.P.、12 MaB.P.和19 MaB.P.时洞穴次生化学沉积较为发育.由于地表切割程度的差异,晚第三纪岩溶过程在高原南部较为强烈,相对于第四纪期间的强烈抬升来说,高原晚第三纪的抬升速率较为缓慢,两者的差别达两个数量级.
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