Extending gsml Joint
The gsml:Joint concept is not mentionned in the GeosciML v4.1 specifications but is clearly identified in the UML model as part of the Geologic Structure Details.
A gsml:Joint is defined as a:
Fracture across which there is no displacement at the scale of interest.
gsml:Joint is as a specialization of a gsml:Fracture defined which is defined as:
Fractures are cracks in the earth surface. If there is no displacement it is a joint. If there is displacement and you are in the brittle zone it is a fault. In the ductile zone, a fracture with displacement with fracture is called a shear.
gsml:Joint is identified to realize the geotech concept called DiscreteDiscontinuity.
As gsml:DiscreteDiscontinuity is proposed as a specialization of gsml:GeologicStructure which it itself a specialization of a GeologicFeature it intherits its capacity to be associated to (multiple) gsml:MappedFeature where each one are intended to be possible representation of the concept
A GeotechUnit being a GeologicUnit, it inherits of its properties.
Additionnal properties specific to the Geotech Unit includes: