a reverse fault in which the rocks on the upper surface of a fault plane have moved over the rocks on the lower surface
Compare underthrust
overthrust in American English
(ˈouvərˌθrʌst)
noun Geology
1.
a thrust fault with a low dip and a large slip
2.
a thrust fault in which the hanging wall was the one that moved (opposed to underthrust)
Word origin
[1880–85; over- + thrust]This word is first recorded in the period 1880–85. Other words that entered Englishat around the same time include: Chief of Staff, automatism, impressionism, rain check, regionalismover- is a prefixal use of over, occurring in various senses in compounds (overboard; overcoat; overhang; overlap; overlord; overrun; overthrow), and especially employed, with the sense of “over the limit,” “to excess,” “toomuch,” “too,” to form verbs, adjectives, adverbs, and nouns (overact; overcapitalize; overcrowd; overfull; overmuch; oversupply; overweight), and many others, mostly self-explanatory: a hyphen, which is commonly absent fromold or well-established formations, is sometimes used in new coinages or in any wordswhose component parts it may be desirable to set off distinctly
Examples of 'overthrust' in a sentence
overthrust
These well cuts contain both the allochthon and autochthon parts of the overthrust.
E. A. Kuznetsova, T. V. Karaseva 2018, 'Formation of the Petroleum Potential of Vuktyl Overthrust Using the Results of the1D Basin Modeling', Vestnik Permskogo Universiteta: Seriâ Geologiâhttp://geology-vestnik.psu.ru/index.php/geology/article/view/233. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Generation and accumulation of hydrocarbons occurred mainly after overthrust dislocations, when the main traps formed in the deep-lying strata.
E. A. Kuznetsova, T. V. Karaseva 2018, 'Formation of the Petroleum Potential of Vuktyl Overthrust Using the Results of the1D Basin Modeling', Vestnik Permskogo Universiteta: Seriâ Geologiâhttp://geology-vestnik.psu.ru/index.php/geology/article/view/233. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)