摘要
塔里木盆地西北缘的天山南麓地处暖温带大陆性干旱气候区,碳酸盐岩广为出露。采用灰岩和白云岩溶蚀试片进行了野外溶蚀试验,得出灰岩和白云岩的溶蚀速度达到0.281～0.404mm/ka;镜下鉴定,观察到溶蚀形成的微溶缝和溶孔,缝宽0.05～0.2mm,孔径一般0.1～0.25mm,反映了在大陆性干旱气候条件下,降水下渗溶滤对岩溶孔缝洞的形成起到重要作用。
Carbonate rocks are widespread along South piedmont of Tianshan, northwest Tarim Basin, where is dry-warm temperate continental climate. It is proved by corrosion tests in field with slice that the corrosion rate of limestone and dolomite is 0.281~0.404 mm/ka there. Observed under microscope, fissures formed by corrosion is 0.05~0.2 mm wide and pores formed in the corrosion test is 0.1~0.25 mm in diameter, which shows the important role of infiltrated rainwater on the formation of fissures and pores under continental dry climate conditions.
出处
《中国岩溶》
CAS
CSCD
2004年第3期234-237,共4页
Carsologica Sinica
基金
国家科技攻关计划项目(2002BA901A13)资助
关键词
塔里木盆地
碳酸盐岩
灰岩
白云岩
溶蚀
Corrosion test
Carbonate rock
Corrosion rate
Tarim Basin
