How North America was formed?

The central core of present-day North America is its craton, the oldest, thickest part of the continent. While parts of the craton peek out in Greenland and Canada, in the U.S., thick layers of sedimentary rocks keep most of these ancient assemblages under wraps in the center of the continent. read more

Dr. Ron Blakey, Professor Emeritus of Geology at Northern Arizona University, recently published maps showing the step-by-step evolution of the tectonic plates comprising North America, from the Precambrian-era 550 million years ago to the present. read more

The geology of North America is a subject of regional geology and covers the North American continent, third-largest in the world. Geologic units and processes are investigated on a large scale to reach a synthesized picture of the geological development of the continent. read more