球状构造
岩石中矿物围绕某些中心呈同心层分布，外形呈圆球或椭球体的一种构造。它可能为某些成分过饱和岩浆凝聚结晶产物。这种构造在显晶质火成岩中十分常见，如球状闪长岩和球状辉长岩。在安山岩中亦可见到。
Classification(s)
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Geographic semantic resource library Earth System(in Chinese) Igneous petrology
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| English |
|---|
| Name | orbicula structure |
| Chinese |
|---|
| Name | 球状构造 |
| Description | 岩石中矿物围绕某些中心呈同心层分布，外形呈圆球或椭球体的一种构造。它可能为某些成分过饱和岩浆凝聚结晶产物。这种构造在显晶质火成岩中十分常见，如球状闪长岩和球状辉长岩。在安山岩中亦可见到。 |
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NNU_Group (2011). 球状构造, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/c0f26e70-2cad-4e11-82d1-ff336f539f76
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