Exam 10: Early Paleozoic Earth History

Discuss the Early Paleozoic development of sedimentary rocks in North America.

A series of large, northeast-southwest trending islands that protruded from the Sauk Sea were known as the ____________________ ____________________.

During the early Paleozoic, North America was located near the ____.

Discuss the paleogeography of the Early Paleozoic. How did this paleogeography differ from present-day geography?

Discuss the stratigraphy of the Grand Canyon. What does this stratigraphy imply about sea level? What are the formation names of the Grand Canyon rocks?

A transgression is represented in the rock record, from bottom to top (oldest to youngest), by ____.

Thick sections of evaporite deposits that were formed in basins surrounded by large reef complexes are common in the Tippecanoe sequence.

The first major Paleozoic transgression onto the North American craton was the ____ sequence.

Rise and fall of sea level in epeiric seas can be partly explained by continental glacial events.

What two sequences were deposited in the early Paleozoic?

Shields are the exposed portions of cratons that contain igneous and metamorphic rocks.

A(n) ____________________ ____________________ is a limestone structure constructed by living organisms, some of which contribute skeletal materials to the reef framework.

The Transcontinental Arch and portions of the Canadian shield were above sea level during the Sauk transgression.

Conical marine organisms that lived during the Cambrian and were the earliest builders of reef-like structures are known as ____.

Reconstruction of Paleozoic paleogeography is well documented by magnetic stripe data from rocks 600 to 250 million years old on the ocean floor.

Widespread, shallow seas that transgress over a craton are called ____________________.

A(n) ____ is an accumulation of detrital sediment adjacent to an uplifted area.

What is a broad shallow sea that covers part of a continent?

Thick salt deposits have been explained by evaporation in silled (also called "barrier") basins.

Discuss the silled (barrier) basin model for evaporite deposition. What features of evaporites does this model explain?