晶体印痕
沉积岩中的一种层面构造。在含盐度高、蒸发量大的咸水盆地泥质沉积物中，常有石盐、石膏等晶体沉积。当成岩作用时，泥质沉积物失水、压缩、厚度减薄，而盐类物质收缩小，突出于岩层表面，并嵌入上覆岩层中，故使上下岩层的底面和顶面留下晶体的印痕。若易溶矿物晶体被溶解移去，也可留下晶体的痕迹。如其空间被后来的矿物体所充填，还可产生矿物假象。石盐、石膏等盐类晶体印痕或假象是大陆干燥地区沉积物的特征。
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contributed at 2011-09-27
Classification(s)
●
Earth System(in Chinese) Sedimentology and sedimentary petrology
Detailed Description
| English |
|---|
| Name | crystal imprints |
| Chinese |
|---|
| Name | 晶体印痕 |
| Description | 沉积岩中的一种层面构造。在含盐度高、蒸发量大的咸水盆地泥质沉积物中，常有石盐、石膏等晶体沉积。当成岩作用时，泥质沉积物失水、压缩、厚度减薄，而盐类物质收缩小，突出于岩层表面，并嵌入上覆岩层中，故使上下岩层的底面和顶面留下晶体的印痕。若易溶矿物晶体被溶解移去，也可留下晶体的痕迹。如其空间被后来的矿物体所充填，还可产生矿物假象。石盐、石膏等盐类晶体印痕或假象是大陆干燥地区沉积物的特征。 |
How to Cite
NNU_Group (2011). 晶体印痕, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/38df4c84-525c-4561-a71e-4ba175b48b25
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