Geologic structures are generated by motions of the tectonic
plates that make up the Earth's outermost solid shell. Tectonic
plates move at rates of a few centimeters per year, about the
rate at which your fingernails grow. [Image courtesy of the USGS]
![](../images/platemap.gif)
Back | Next
Back
to Table of Contents
Please report problems to: gary.calderone@gccaz.edu
URL:
http://www.gc.maricopa.edu/academicdepartments/physicalscience/gjc-nsf/intro/intro2a.html
Last
update: Tuesday, 16-Oct-2012 07:38:13 US Mountain Standard Time
Legal Disclaimer