from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A usually elongate, basinlike depression along the edge of a continent, in which a thick sequence of sediments and volcanic deposits has accumulated.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A large, linear depression in the Earth's crust in which sediment accumulates.
from The Century Dictionary and Cyclopedia
- n. In geology, a considerable tract in which the strata are bent into a great trough with many minor undulations on the flanks.
The park's principal geomorphic feature is the north-east to south-east geosyncline which is surrounded by raised folds and high mountains.
"geosyncline," a vast trough, or cradle, being slowly filled with sediment brought down by the rivers from the adjoining shores.
This ecoregion is relatively young, perhaps less than 10,000 years old, and developed in a great geosyncline between the Guiana Plateau and the Andes Range.
Well, where it faltered was at the edge of a geosyncline, the orogenesis is much later than this area.
"Evidently then," continued the professor, "the atoll is simply an annular terminal moraine of detritus shed alluvially into the sea, thus leaving a geosyncline of volcanic ash embedded with an occasional trilobite and the fragments of scoria, upon which we now stand."
Now, let us suppose, in the trough of the geosyncline, and upon the top of the normal layer, a deposit of, say, 10 kilometres (6.2 miles) of sediments is formed during a long period of continental denudation.
Mesozoic times had collected in the geosyncline formed by their own ever increasing weight.
Again, the ancient and modern volcanoes and earthquakes of Europe are associated with the geosyncline of the greater Mediterranean, the
When yielding has begun in any geosyncline, and the materials are faulted and overthrust, there results a considerably increased thickness.
The mountain range can only arise where the geosyncline is deeply filled by long ages of sedimentation.
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