Degree of weathering
The degree of weathering describes a classification of the strength or the progress of weathering of a rock or mountain . For general rocks a subdivision into four arbitrarily determined grades is common, for special rocks like meteorites there are special classifications.
Classification of rocks
The following table provides information about the various degrees of weathering:
code | designation | Feature rock | Feature mountains |
---|---|---|---|
VU | unweathered | unweathered, fresh, no signs of weathering | no weathering-related loosening at dividing surfaces |
VA | weathered | Weathering of individual mineral grains recognizable on the fresh fracture surface (magnifying glass), beginning mineral transformation and discoloration | Partial loosening at dividing surfaces |
VE | softened | Mineral structure loosened by weathering, but still in association , mostly in connection with mineral transformation, especially with and on interfaces | complete loosening at interfaces |
VZ | decomposed | Rock that is still in the aggregate and has been changed by new mineral formation without solid rock properties (e.g. conversion of feldspars to clay minerals , from clay slate to clay ) | Fissured body without solid rock properties |
Classification of meteorites
- See main article: Meteorite
There is a classification according to brown coloring by iron oxides (classes A, B and C) as well as a classification according to oxidation and mineralization (classes W0 to W6)
Individual evidence
- ^ Research company for road construction and transport, working group earthworks and foundation engineering : leaflet on rock group description and structural purposes in road construction. Edition 1980.
Web links
- Rock mechanics Degree of weathering (accessed on October 10, 2019)
- Properties of floors (accessed October 10, 2019)
- Swelling behavior of diagenetically solidified clay stones (accessed on October 10, 2019)
- Soil studies in late and post-glacial areas (accessed on October 10, 2019)
- Technical utilization of excavated soil (accessed on October 10, 2019)