岩群 [地质] terrain
- 基性岩墙群则是由一定数量的具有相同或相似产状、呈线状分布的基性岩墙组成。
Abundant mafic dykes with similar occurrences can distribute linearly to form mafic dyke swarms in a very short time. - 分析了宿松岩群在南部与原大别群非不整合接触关系,在北部为过渡关系。
The group shows a non-discordant contact with the original DabieGroup in the southern part and a transition in the northern. - 未变形未变质的前寒武纪岩墙群的存在表明前寒武纪华北克拉通已经具有了刚性板块的性质。
The existence of the undeformed and unmetamorphed Precambrian dike swarms shows that the Precambrian North China Craton had been a rigid plate.
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