etc.) of soil and rock masses in, for example, tunnel, foundation, or slope construction. As a result, joints are an important part of geotechnical engineering in practice and research. See also Basalt fan structure Exfoliating granite Tessellated pavement References External links Aydin, A., and J. Zhong (nda) Non-orthogonal Joint Sets, Multiple Joint Sets, Rock Fracture Knowledgebase, Stanford University, Stanford, California. Aydin, A., and J. Zhong (ndb) Orthogonal Joint Sets, Multiple Joint Sets, Rock Fracture Knowledgebase, Stanford University, Stanford, California. Aydin, A., and J. Zhong (ndb) Patterns of Multiple Joint Sets, Multiple Joint Sets, Rock Fracture Knowledgebase, Stanford University, Stanford, California. Geology terminology Petrology Structural geology