Overprinting (geology)
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![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/af/Orthogneiss_Geopark.jpg/220px-Orthogneiss_Geopark.jpg)
In this orthogneiss from the Czech Republic the original igneous rock texture has been overprinted by foliation associated with metamorphism.
Overprinting is a geological process that leaves marks altering the marks of an earlier process. Examples include various phases of deformation of rocks in such a way that the initial structures are modified, sometimes even beyond recognition.
Geochemical signatures can also be overprinted when the geochemistry of a geological body is changed by eliminating or modifying the earlier geochemical signature.
Categories:
- Geological processes