Mind map
Geological structures
Mind map: Geological structures
Map content
Geological structures
Unconformity = a period when no sediment was deposited
- Angular conformity = the rocks above and below the unconformity have different dips, and possibly strikes
Joints
- A fracture in competent rocks along which no observable movement has occurred
- Tectonic joints = form as a result of folding and cause tension joints parallel to the axial plane and cross joints on the limbs
- Cooling joints = form as a result of contraction on cooling of igneous rocks
- Unloading joints = form as a result of lower pressure near to the surface, they are often horizontal as well as vertical
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- Description
- A Levels Geology (Global Tectonics) Mind Map on Geological structures, created by mavina on 17/02/2014.
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- mavina
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