geosyncline

American  

[jee-oh-sin-klahyn] / ˌdʒi oʊˈsɪn klaɪn /

noun

Geology.

1. a portion of the earth's crust subjected to downward warping during a large span of geologic time; a geosynclinal fold.

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geosyncline British  

/ ˌdʒiːəʊˈsɪŋklaɪn /

noun

1. a broad elongated depression in the earth's crust containing great thicknesses of sediment

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geosyncline Scientific  

/ jē′ō-sĭn′klīn′ /

1. 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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Other Word Forms

• geosynclinal
  adjective

Etymology

Origin of geosyncline

First recorded in 1890–95; geo- + syncline