sentinel in the center of metropolitan Phoenix, Piestewa
Peak, also known historically as Squaw
Peak, or possibly as Vainom Do'ag (Iron Mountain,
in the Piman language) dominates the skyline from almost any direction. This view looks north,
from the Biltmore area. "basement" rocks of
North America rise here to 2608 ft above sea level (795m), and form most of the .
Basement rocks here and elsewhere are those rock formations which are beneath
all of the layers (missing here now, having
eroded away), and are remnants of early parts of the Earth's continental crust.
They are usually complex associations of and rocks -- in the case of Squaw
If you want more information about the Piestewa Peak / Squaw Peak area
and the Phoenix Mountains, download these two FREE short GeoStories
(tm) (PDF files, each <1MB):