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underthrust
(redirected from underthrusting)

    Also found in: Encyclopedia 0.01 sec.
underthrust [ˈʌndəˌθrʌst]
n
(Earth Sciences / Geological Science) Geology a reverse fault in which the rocks on the lower surface of a fault plane have moved under the relatively static rocks on the upper surface Compare overthrust
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The mantle reflections have been interpreted as subduction scars formed during Siluro-Dcvonian, west-directed underthrusting of Ganderia and Avalonia beneath Laurentia (van der Velden and Cook, 2002a).
PanLITHOPROBE workshop IV: IntraOrogen correlations and comparative ... by van Staal, C. / Geoscience Canada
However, the tremor occurred 40 to 50 kilometers below sea level and lasted only 50 seconds, making it deeper and quicker than other underthrusting quakes, Kanamori notes.
Pacific Ocean quake stumps scientists by Adler, Tina / Science News
The latter occurs along sedimentary and structural-tectonic conduits such as unconformities, faults, and the decollement (the prominent boundary between the overriding and underthrusting plates shown in the figure on page 87) as well as through mud volcanoes.
Fluid composition in subduction zones by Kastner, Miriam; Martin, Jonathan B. / Oceanus
 
 
 
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