Ad
related to: fault definition in geology diagram
Search results
Results From The WOW.Com Content Network
A fault plane is the plane that represents the fracture surface of a fault. A fault trace or fault line is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. [3] [4] A fault zone is a cluster of parallel faults.
A detachment fault is a gently dipping normal fault associated with large-scale extensional tectonics. [1] Detachment faults often have very large displacements (tens of km) and juxtapose unmetamorphosed hanging walls against medium to high-grade metamorphic footwalls that are called metamorphic core complexes .
A thrust fault is a type of reverse fault that has a dip of 45 degrees or less. [1] [2] If the angle of the fault plane is lower (often less than 15 degrees from the horizontal [3]) and the displacement of the overlying block is large (often in the kilometer range) the fault is called an overthrust or overthrust fault. [4]
Diagram of horsts and grabens. In geology, horst and graben (or range and valley) refers to topography consisting of alternating raised and lowered fault blocks known as horsts and grabens. The features are created by normal faulting and rifting caused by crustal extension. [1]
Fault and shear zone contacts can be represented by either discrete breaks and discontinuities, or ductile deformation without a physical break in stratigraphy. [9] Fault surface contacts show discrete breaks and have an attitude and position which describes the contact between two formations. [ 3 ]
Décollement (from French décoller 'to detach from') is a gliding plane between two rock masses, also known as a basal detachment fault. Décollements are a deformational structure, resulting in independent styles of deformation in the rocks above and below the fault.
Possible modes of formation of monoclines. Monoclines may be formed in several different ways (see diagram) By differential compaction over an underlying structure, particularly a large fault at the edge of a basin due to the greater compactibility of the basin fill, the amplitude of the fold will die out gradually upwards.
Dip is defined as the angle of the fault relative to the surface of the earth, which indicates the plane on which slip will occur. Lastly, in any non-vertical fault, the block above the fault is called the hanging wall, while the blockbelow the fault is called the footwall. [4] Normal and reverse dip-slip faults with labeled hanging wall and ...