Exam 17: Earth History

Describe the geologic history of the Ancestral Rockies.

Describe the coming together of Pangaea.What was the name of what the rest of the planet covered with besides this supercontinent?

The batholiths that make up the Sierra Nevada,and mountains in southern California,Idaho and the Coast Range were the result of subduction during the Cordilleran orogeny.

Describe the first phase of the Cordilleran orogeny.

What is a clastic wedge,such as might form during an orogeny?

What tectonic event caused the Taconic and Acadian orogenies?

Banded iron formations consist of alternating layers of iron minerals and chert.

The breakup of Pangaea began during the ____________________ Period and continued through the ____________________ Period.

During the last two million years,there have been at least ____________________ warm-cold cycles.

Describe the beginning of operations of Earth's systems and when that occurred.