分布在大弄地区岩墙状及岩脉状强透闪石化岩石，过去一直被认为是闪长岩。
Strong tremolitization rocks in shape of rock walls and rock veins, distributed in the Dalong area, have been viewed as the diorites at all times.
主要是查明岩石的形态(层状、似层状、脉状、岩墙状、岩株状、岩基状等)、延长和倾斜方向、规模或大小等。
Mainly to find out the shape of the rock (layered, stratified, vein, rock wall, rock strain, stress, etc.), extended and tilt direction, scale or size and so on.
河南省嵩山地区中—新元古代五佛山群沉积岩中发育几百条砂岩岩墙、砂岩岩脉和砂岩岩床 ，形成一个壮观的砂岩岩墙群。
Numerous sandstone dikes and sills (about 230) were dominantly found in the shales of the Puyu Formation, and formed a large swarm of sandstone dikes.
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