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  2. Fault-block mountains - Wikipedia

    en.wikipedia.org/wiki/Fault_block

    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.

  3. Mountain formation - Wikipedia

    en.wikipedia.org/wiki/Mountain_formation

    When a fault block is raised or tilted, a block mountain can result. [17] Higher blocks are called horsts, and troughs are called grabens. A spreading apart of the surface causes tensional forces. When the tensional forces are strong enough to cause a plate to split apart, it does so such that a center block drops down relative to its flanking ...

  4. Block Mountain - Wikipedia

    en.wikipedia.org/wiki/Block_Mountain

    Block Mountain is a mountain located in the Sawback Range in Alberta, Canada. It was named Block Mountain in 1958 because vertical fractures , of which part of the mountain is made, look like they are composed of giant blocks, [ tone ] and are known as block mountains.

  5. Horst and graben - Wikipedia

    en.wikipedia.org/wiki/Horst_and_graben

    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 ]

  6. Horst (geology) - Wikipedia

    en.wikipedia.org/wiki/Horst_(geology)

    Diagram of horsts and grabens. In physical geography and geology, a horst is a raised fault block bounded by normal faults. [1] Horsts are typically found together with grabens. While a horst is lifted or remains stationary, the grabens on either side subside. [2] This is often caused by extensional forces pulling apart the crust.

  7. Tilted block faulting - Wikipedia

    en.wikipedia.org/wiki/Tilted_block_faulting

    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 ]

  8. Basin and range topography - Wikipedia

    en.wikipedia.org/wiki/Basin_and_range_topography

    This results in block faulting, where the blocks of rock between the normal faults either subside, uplift, or tilt. The movement of these blocks results in the alternating valleys and mountains. As the crust thins, it also allows heat from the mantle to more easily melt rock and form magma, resulting in increased volcanic activity. [3]

  9. Mountain - Wikipedia

    en.wikipedia.org/wiki/Mountain

    Mount Everest, Earth's highest mountain. A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock.Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (980 ft) above the surrounding land.