福建连城赖源溶洞化学沉积类型及成因

Chemical Sedimentary Type and Genesis of Laiyuan Karst Cave in Liancheng County,Fujian Province

赖源山间盆地西南缘上村一带出露二叠系船山组、棲霞组石灰岩,发育幽琴洞、仙云洞等溶洞组成的溶洞群,溶洞内岩溶发育系统完整,重力水沉积、非重力水沉积、混合水流协同沉积、叠置沉积的化学沉积物类型齐全。其数量繁多的莲盆笋、莲盆柱、卷曲状石枝,规模庞大的细纹边石坝为福建其他溶洞所罕见。赖源溶洞保存完好、景观优美的钟乳石是研究洞穴不同环境及流态水流化学沉积的良好地质遗迹,也是溶洞旅游的宝贵资源。

Permian Chuanshan and Qixia formation limestones are exposed in the southwest of Laiyuan intermountain basin Shangcun area, which occurs the cave group such as Youqin cave, Xianyun cave. The chemical-sedimentary types of gravitational water deposits, non- gravitational water deposits, synergetic deposits of the mixed water stream and superimposed deposits are complete. A lage amount of the lotus pots aspargus, lotus pots pillar , curly stone branch and a scale of rimstone dam like fine lines are rare in other caves of Fujian. The well-preserved and beautifule stalactite are good geologic relic for researching different cave environment and the chemical sedimentary of fluid flow. It is precious resources of the cave tourism too.