摘要
九寨沟与四川西北部碳酸盐岩地区早期钙华体在52～3万年前的冰缘环境中形成。3万年后,区内气温在振荡中升高,使九寨冰缘退缩,岩溶水酸化并具溶蚀性,在早期钙华体上形成了湖瀑等各种溶蚀形态,渗流溶蚀和混合溶蚀是壶穴湖、梯湖和溶蚀湖形成的主要机制,溶蚀侵蚀伴有季节性钙华沉淀形成着叠水和瀑布。保护湖瀑景观的原则是抑制钙华的溶蚀强度,运用岩溶水的瀑堤效应促进CaCO3沉淀,增強瀑堤的固结,减少渗漏。
Travertine in the＇Jiuzhai Valley was formedin a periglacial environment 0.52-0.03 Ma ago. Then, various dissolution landforms such as pot hole, terrace lake, dissolution lake and lake waterfall were formed on the early travertine by periglacial retreat and water acidization resulting from temperature going up. The key to the pr_o_tection of the !ake waterfall landscape is to have control of dissolution of travertine.
出处
《四川地质学报》
2012年第3期333-338,共6页
Acta Geologica Sichuan
关键词
早期钙华体
岩溶作用
湖瀑景观
九寨沟
early travertine
karstification
lake waterfall landscape
Jiuzhai Valley
