GEOLOGY

Detailed explanation-1: -10.6a: Compressive forces generate folding and faulting as a consequence of shortening. Compressive forces are common along convergent plate boundaries resulting in mountain ranges.

Detailed explanation-2: -Folds result from compressional stresses or shear stresses acting over considerable time. Because the strain rate is low and/or the temperature is high, rocks that we normally consider brittle can behave in a ductile manner resulting in such folds. Geometry of Folds-Folds are described by their form and orientation.

Detailed explanation-3: -An anticline is a type of fold created in a rock when it is subjected to compressional stress that causes the rocks to bend or curve downward as shown in Figure 6. The oldest layers are found in the fold’s core or center.

Detailed explanation-4: -Compression squeezes rocks together, causing rocks to fold or fracture (break) (figure 1). Compression is the most common stress at convergent plate boundaries. Rocks that are pulled apart are under tension.

Detailed explanation-5: -Types of Stress Normal stress is subdivided into compression, when the stresses are squeezing a rock, and tension, when stress is pulling it apart. Rocks undergo compression in regions where plates are colliding, or where they are being buried beneath other rocks.