Search results
Results from the WOW.Com Content Network
Tilted block faulting, also called rotational block faulting, is a mode of structural evolution in extensional tectonic events, a result of tectonic plates stretching apart. [ 1 ] [ 2 ] When the upper lithospheric crust experiences extensional pressures, the brittle crust fractures, creating detachment faults . [ 3 ]
Lifted fault-block geology Tilted fault-block formation in the Teton Range. Fault-block mountains often result from rifting, an indicator of extensional tectonics. These can be small or form extensive rift valley systems, such as the East African Rift zone. Death Valley in California is a smaller example.
Tilted block faulting, also known as half-graben or rotational block faulting, can also occur during extension. Large gently dipping normal faults, also known as detachment faults, act as platforms in which normal faulted blocks tilt or slide along. However, instead of the whole block subsiding only one side, the block may slip along the ...
The Basin and Range Province in the western United States is an extensive region of alternating valleys and ridges caused by horst and graben as well as tilted block faulting. [1] The Condroz and Ardennes regions of Wallonia are good examples of a succession of horst and graben.
They range in width from somewhat less than 100 km up to several hundred km, consisting of one or more normal faults and related fault blocks. [2] In individual rift segments, one polarity (i.e. dip direction) normally dominates, giving a half-graben geometry. [6] Other common geometries include metamorphic core complexes and tilted blocks.
The rupture caused clear surface faulting; a 21-mile (34 km) long northwest-trending zone of fresh scarps and ground ruptures was present on a slope of the Lost River Range. Extensive breakage occurred along a five-mile (8 km) zone between West Spring and Cedar Creek; ground surface was literally "shattered" into tilted blocks, each several ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The Sierra Nevada–Great Valley Block (SNGV) is a section of the Earth's crust in California, United States, encompassing most of the region east of the Great Valley fault system which runs along the eastern foot of the Coast Ranges, and west of the Sierra Nevada Fault which runs along the foot of the Sierra Nevada's eastern scarp.