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A usually elongate, basinlike depression along the edge of a continent, in which a thick sequence of sediments and volcanic deposits has accumulated.

ge′o·syn·cli′nal (-sĭn-klĭ′nəl) adj.


(Geological Science) a broad elongated depression in the earth's crust containing great thicknesses of sediment
ˌgeosynˈclinal adj


(ˌdʒi oʊˈsɪn klaɪn)

a portion of the earth's crust subjected to downward warping during a large span of geologic time.
ge`o•syn•cli′nal, adj.


[ˌdʒiːəʊˈsɪnklaɪn] ngeosinclinale f
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References in periodicals archive ?
They are associated with a thrusting caused by the closure of the Gulf geosyncline.
8 corresponding geological structures with typical flysch facies in geosyncline areas, geological formations strongly folded and deployed, geological formations affected by a dense network of cleavage, fissures and stratification.
The Razorback Iron Deposit is hosted in the Neo-Proterozoic Braemar Iron Formation, a tillitic unit that is part of the Adelaidean Geosyncline sedimentary sequence.
The Allamber Project is located 175 kilometers southeast of Darwin and covers 482 square kilometers within the prospective Pine Creek Geosyncline.
The Clare Valley, 400 km north of the sites in the south-east district, is in a ridge and valley geologic province of moderate relief and underlain by broadly folded Late Precambrian meta-sediments of the Adelaide Geosyncline.
Jordan enjoys a favorable location alongside the rich oil-production basins of the Gulf Coast Geosyncline, but nearly 60 percent of the 100 or so wells drilled in Jordan were clustered around discoveries, with only a few wells extending through the entire sedimentary spectrum.
In contrast, Aubouin (1965) proposed that ophiolites were generated through differentiation of gigantic deep extrusions on the seafloor, in the frame of the geosyncline concept, an idea already proposed by Brunn (1959).
Geology of the study area consists of inter-bedded sedimentary bedrock of shale, siltstone, limestone, and coal that was laid down in the shallow seas of the Mississippian, Pennsylvanian, or Permian periods in an anticline that dips eastward to the Appalachian Geosyncline (Rypma 1961; Keys and others 1995).
1971) Structural features of the Ligurian ophiolites: petrological evidence for the "oceanic" floor of the northern Apennine geosyncline.
They are associated with the thrusting caused by the closure of the Gulf geosyncline.