When tectonic plates are compressed the produce

When they are compressed they create tension which creates faults

Reverse Faults happen when the rocks are pushed together by a type of deformation called compression. Compression is when tectonic forces push rocks together. When compression acts on rocks, reverse faults form, causing the hanging wall to move up relative to the footwall moving down.- Google, Wikiversity

The figure is not necessarily a parallelogram because only one diagonal is bisected and only one pair of sides is congruent.

Drought resistance because they are close to a lot of supplys