浅析四川通江诺水河地质公园岩溶景观成因

A Brief Talk on Genesis of Karst Landscape in the Nuoshuihe Geopark, Tongjiang, Sichuan

诺水河地质公园内完整保留了岩溶作用各阶段的地质现象,形成了主题突出、类型多样的地质遗迹景观组合。该区出露了厚达2 248m的石灰岩地层,为岩溶作用提供了丰富的物质基础。自0.65亿年的古近纪以来受推覆构造影响,使区内地壳呈阶段式上升,产生大量水平裂隙和纵张裂隙,为岩溶作用提供了良好的通道。岩溶洞内形态万千、绚丽多彩的钙华景观则是含Ca2+的水流经滴水作用、面状流水作用、池水作用、协同水作用、毛细管和旋卷流水作用的杰作。

There are all the karst landscapes in the Nuoshuihe Geopak which form many and varied geoheritage landscape associations. Limestone with a thickness of 2248 m is exposed in this region which lays material foundation for karstification. Since the Paleogene （65 Ma）, napping has resulted in step-type cymatogeny and a great deal of horizontal and vertical fissures which provide good channel for karstification. The travertine landscape in karst caves should be attributed to Ca^2＋ -rich running water action.