结晶灰岩
- 【地】crystalline limestone
结晶灰岩-
坝区岩体主要为泥盆系中统的千枚岩，板岩和千枚岩夹结晶灰岩。
Mainly rock mass in the system of Devonian phyllite , slate and phyllite folder crystalline limestone .
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表现为结晶灰岩地层岩性及褶皱纵张节理裂隙控制岩溶的发育程度。
Firstly , Lithology , joints and fractures control its development degree , which lead to crystalline limestone and fractured longitudinal .
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笔者1992年在汶川下庄的结晶灰岩中采到了海百合茎化石，证实其时代属奥陶纪。
In 1992 , the author found fossil crinoid stems in crystalline limestone at Xia-zhuang , Wenchuan , which were determined to be of Ordovician age .