a portion of the earth's crust subjected to downward warping during a large span of geologic time; a geosynclinal fold.
Origin of geosyncline
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Examples from the Web for geosyncline
Historical Examples of geosyncline
The mountain range can only arise where the geosyncline is deeply filled by long ages of sedimentation.The Birth-Time of the World and Other Scientific Essays
J. (John) Joly
a broad elongated depression in the earth's crust containing great thicknesses of sediment
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
A usually elongate, basinlike depression along the edge of a continent, in which a thick sequence of sediments and volcanic deposits has accumulated.
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