downbuckle

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• downbuckle — ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun : a generally long and relatively narrow portion of the earth s crust that has been bent sharply downward • downbuckling ˈ ̷ ̷ˌ ̷ ̷( ̷ ̷) ̷ ̷ noun …   Useful english dictionary

• tectogene — ▪ geology       great downbuckle of the Earth s crust into the mantle below deep sea trenches that are filled with marine sediments. The sediments become crumpled and folded within the deep downbuckle; some portions are squeezed downward into the …   Universalium

• Appalachian Geosyncline — Great downbuckle in the Earth s crust in the region of the present Appalachian Mountains. It was in the Appalachians that James Hall first worked out the geosynclinal theory of mountain building (see geosyncline). * * * …   Universalium

• downbuckling — noun see downbuckle …   Useful english dictionary