Exam 17: Earth History

The ____________________ forms the core of North America and is now tectonically inactive.

The Permian-Triassic orogenic event that occurred with the collision of an island arc with the western margin of North America is called the:

Eastern North America during the Cenozoic can be described as a(n):

Describe the four stages of the breakup of Pangaea.

What was the Cordilleran orogeny? Briefly describe the four phases of the orogeny.

The Precambrian comprises what percent of geologic time?

The plate tectonic activity that gave rise to orogens around much of the circum-Pacific orogenic belt was ____________________.

The Early Cretaceous sedimentation in the Gulf Coastal region was related to a (transgressive/regressive)____________________ seaway.

What are the three main rock types that characterize Archean shield areas?

Pennsylvanian rocks have a characteristic cyclical deposition sequence of ____ and ____ sediments called ____.

During the Mesozoic,the Appalachian range was eroded into a low-lying erosional surface.

The rate of plate motion was probably slower in the Archean.

Briefly explain the difference between the tectonic setting of shield areas during the Precambrian and since the onset of the Phanerozoic.

The Queenston Delta formed in response to the:

The Transcontinental Arch represents portions of the Canadian shield not covered by seas in the Sauk transgression.

The formation of the Midcontinent rift was ____________________ in time with the Grenville orogeny.

Erosion of the Taconic Highlands resulted in the development of a(n)____________________ called the ____________________.

The distinctive sedimentary rocks that were deposited in the early-formed Gulf of Mexico were ____________________.

The orogenic event of the North American Cordillera,which began in the Late Cretaceous and extended into the Cenozoic,is the:

Outline the history of the Alpine-Himalayan belt.