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Folds, Faults, and Mountain Types. Folding. When rock is put under stress , it sometimes bends … this is called FOLDING. These make folded mountains. . Folds:. These types of folds are called ANTICLINE folds. Folds:. These types of folds are called SYNCLINE folds. Folds:.
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Folding • When rock is put under stress, it sometimes bends… this is called FOLDING. • These make folded mountains.
Folds: • These types of folds are called ANTICLINE folds
Folds: • These types of folds are called SYNCLINE folds.
Folds: • When one side moves up and the other moves down, these types of folds are called MONOCLINE folds
Faults Section • Sometimes rock doesn’t bend, but it breaks instead… this is called FAULTING. • These make Fault-Block Mountains • There are 3 types of faults: • Normal Fault • Reverse Fault • Strike Slip Fault
Normal Faults • The hanging wall moves down relative to the footwall. • Occurs when TENSION causes tectonic plates to move apart. • Happens at a divergent plate boundary
Reverse Faults • The hanging wall moves up relative to the footwall. (the reverse of a normal fault) • Occurs when COMPRESSION causes tectonic plates to push rocks together. • Happens at a convergent plate boundary.
Reverse Faults View of the hanging wall
Faults Normal Fault Reverse Fault • When rocks are pulled apart • One slab of rock slides DOWNWARD • When rocks are pushed together • One slab of rock slides UPWARD
Strike Slip Faults • When opposing forces called SHEARING cause the rock to break and move horizontally. • The ground appears to move to the left or right. • Happens at a transform plate boundary.
The third type of mountains are _______. • Volcanic!