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In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the location where the curvature is greatest, and the limbs are the sides of the fold that dip away from the hinge.
Anticlinal trap. An anticline is an area of the subsurface where the strata have been pushed into forming a domed shape. If there is a layer of impermeable rock present in this dome shape, then water-insoluble hydrocarbons can accumulate at the crest until the anticline is filled to the spill point (the highest point where hydrocarbons can escape the anticline).
Anticlinal may refer to: Anticline , in structural geology, an anticline is a fold that is convex up and has its oldest beds at its core Anticlinal, in stereochemistry, a torsion angle between 90° to 150°, and –90° to –150°; see Alkane_stereochemistry
Anticlinal traps are formed by folding of rock. For example, if a porous sandstone unit covered with low permeability shale is folded into an anticline, it may form a hydrocarbons trap, oil accumulating in the crest of the fold. Most anticlinal traps are produced as a result of sideways pressure, folding the layers of rock, but can also occur ...
Geologic map of southeast England and the region around the English Channel, showing the Weald-Artois anticline in its regional context. Cross-section over the Wealden anticline
This is followed 8 km to the southwest by another anticlinal ridge, the La Tour-Blanche Anticline. In this second anticlinal ridge, the sediments already show a thickness of 1000 m. The Mareuil Anticline is a large-scale structure. To the northwest it changes into a fault zone that can be traced from Angoulême to Isle de Yeu.
Rollover anticline associated with a listric normal fault. Rollover anticlines are anticlines related to extensional normal faults.They must be differentiated from fault-propagation folds, which are associated with reverse faults.
The type of geologic feature that will form is caused by stream power and flexural rigidity of the crust. When stream power increases and flexural rigidity decreases, this causes the structure to progress from a transverse anticline to a river anticline, and in extreme cases to a tectonic aneurysm. [1]