A fold in rocks in which the rock layers dip inward from both sides toward a central line.
A down fold in stratified rocks from whose central axis the beds rise upward and outward in opposite directions.
A fold of rock layers that slope upward on both sides of a common low point. Synclines form when rocks are compressed by plate-tectonic forces. They can be as small as the side of a cliff or as large as an entire valley.
American Heritage Dictionary of the English Language, 5th Edition
syn- +"Ž -cline
Syncline Sentence Examples
Hence the anticline noses out to the north and the syncline to the south.
charniere anticlinale), the corresponding part of a syncline being the "trough-core" or "base," Y, fig.
2 there is obviously a general inclination of the beds towards the71orth, besides the outward dip from the anticline and the inward dip from the syncline.
In describing rock-folds special terms have been assigned to certain portions of the fold; thus, the sloping sides of an anticline or syncline are known as the "limbs," "slopes," "flanks" or "members" of the fold; in an anticline, the part X, fig.
Taking the Atlantic as our simplest type, we may say that the surface of an ocean basin resembles that of a mighty trough or syncline, buckled up more or less centrally in a medial ridge, which is bounded by two long and deep marginal hollows, in the cores of which still deeper grooves sink to the profoundest depths.