地球内部过程 Geologic Tectonics Fractures in rocks sinistral Minor fractures in rocks both normal tault tensional and shear are called eative tens on joints. Larger shear fractures where there are significant maximum displacements of rock bodies across the plane are called yoo faults. (The distinction between intermediae pressure a ' shear joint and a 'small fault is arbitrary depending on tear tault circumstances and significance, but the former term usually suggests a displacement of a few centimetres) 环境迪顶学 minoucntalocelogu ,率地球内部过程 Geologic Tectonics Fractures in rocks • Minor fractures in rocks, both tensional and shear, are called joints. Larger shear fractures, where there are significant displacements of rock bodies across the plane, are called faults. (The distinction between a 'shear joint' and a 'small fault' is arbitrary, depending on circumstances and significance, but the former term usually suggests a displacement of a few centimetres.)