- Horst (geology)
:"This article refers to the geological form. For other uses, see
Horst ".In physical
geography andgeology , a horst is the raised fault block bounded by normal faults orgraben . A horst is formed from extension of the Earth's crust. The raised block is a portion of the crust that generally remains stationary or is uplifted while the land has dropped on either side.The
Vosges andBlack Forest are examples of horsts, the Table, Jura and the Dôle mountains are results of the latter. The word is also applied to those larger areas, such as theRussia n plain,Arabia ,India and CentralSouth Africa , where thecontinent remains stable, with horizontal table-land stratification, in distinction to folded regions such as theEurasia n chains.Horsts and hydrocarbon exploration
In many
rift basin s around the world, the vast majority of discoveredhydrocarbon s are found in conventional traps associated with horsts. For example, much of the petroleum found in theSirte Basin in Libya (of the order of tens of billions of barrels of reserves) are found on large horst blocks such as theZelten Platform and theDahra Platform and on smaller horsts such as theGialo High and theBu-Attifel Ridge .See also
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Fault-block mountain References
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