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Such a fold is called a syncline.
Synclines
A fold
Compressive stress causes the "crumpling" and folding of rock layers.
== == An upward fold in a rock formation is called an anticline.
Such a fold is called a syncline.
Synclines
Such a fold is called a syncline.
If rocks are folded, the folding is younger that the youngest rock affected. If they are folded into a syncline (a U-shaped fold) the youngest rocks are in the core of he fold. The opposite is true for an anticline (a big dome-shaped fold).
Fold
my but
A fold
what causes a rock to break into many layers. DOES WATER
anticlines are caused by extensional stress on the rocks, and syncline is caused by compressional stress. The stress is always pushing from the oldest layer of rock toward the youngest layer of rock, so in an anticline, where the oldest rocks are in the center of the rock fold, they push outward toward the younger rocks. In a syncline the youngest rocks are in the center of the fold and the oldest rocks are on the outer edge, the older rocks push inward toward the youngest rock.
fold mountains form
a fold mountain
Erosion removed the youngest layers of rock, but all the rock is sandstone.