The coldest average temperature in Scottsdale is December at 54.2 degrees. The most monthly precipitation in Scottsdale occurs in August with 1.5 inches. The Scottsdale weather information is based on the average of the previous 3-7 years of data.
Divergent boundaries within continents initially produce rifts which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.
This magma is solid, but becomes a liquid when it reaches the surface through volcanoes. A divergent boundary (or constructive boundary) is where two sections of the egg shell-two tectonic plates-are moving away from each other. When this happens, they leave a gap in-between, and this gap can be filled by the magma from below.