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Strike and dip are generally written as 'strike/dip' or 'dip direction,dip', with the degree symbol typically omitted. The general alphabetical dip direction (N, SE, etc) can be added to reduce ambiguity. For a feature with a dip of 45° and a dip direction of 75°, the strike and dip can be written as 345/45 NE, 165/45 NE, or 075,45.
The inclination of a planar structure in geology is measured by strike and dip. The strike is the line of intersection between the planar feature and a horizontal plane, taken according to the right hand convention, and the dip is the magnitude of the inclination, below horizontal, at right angles to strike.
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 ...
A special class of strike-slip fault is the transform fault when it forms a plate boundary. This class is related to an offset in a spreading center , such as a mid-ocean ridge , or, less common, within continental lithosphere , such as the Dead Sea Transform in the Middle East or the Alpine Fault in New Zealand.
Homocline near Lulworth Cove, England Diagram of a homocline Homocline in Aberdeenshire, Scotland. In structural geology, a homocline or homoclinal structure (from old Greek: homo = same, cline = inclination), is a geological structure in which the layers of a sequence of rock strata, either sedimentary or igneous, dip uniformly in a single direction having the same general inclination in ...
Continental detachment faults are also called décollements, denudational faults, low-angle normal faults (LANF) and dislocation surfaces. [5] The low-angle nature of these normal faults has sparked debate among scientists, centred on whether these faults started out at low angles or rotated from initially steep angles.
The earliest form of use, and the recognized introduction to the term vergence, came from the German geologist, Hans Stille, in 1924. Stille originally used the term to describe the direction of the overturning of minor folds, as well as to describe the "up-dip" direction, which is directly related to the strike and dip of a fold.
The limbs dip in opposite directions and are formed by tilted sedimentary rock layers. [6] Limbs belong to the straight sections on the two sides of a fold. Aerial photographs are helpful for geologists to observe large-scale geological structures without spending large amounts of time in fields. A diagram describing the structure of a fold.