Exam 23: Cenozoic Earth and Life History

The Early Tertiary sedimentary sequence of the Gulf Coastal Plain is ____.

What is the prehistoric overkill hypothesis,and what evidence supports overkill as the reason for the Pleistocene extinctions?

Late Cretaceous to early Tertiary age,coal deposits were higher grade coal than the Pennsylvanian age deposits found in the eastern United States.

Where the pluvial lakes once were,there are now thick sequences of ____________________.

Ungulates that eat leaves,shoots,and twigs are called browsers.

The age of oceanic crust in the Pacific is asymmetric because

Describe the geologic setting of the western margin of North America.

What was the name given to the most recent episode of large-scale deformation in the Cordillera,and when did it begin?

Briefly describe the lives of Cro-Magnon.

The Atlantic margin of North America has been a passive trailing margin since the early Mesozoic.

Less evaporation and more precipitation during the glacial stages led to the formation of ____________________ lakes.

Briefly state the arguments against the climate change hypothesis for the Pleistocene extinction.

The Colorado Plateau has many deep canyons due to downcutting by rivers.

During the Early Tertiary,what were the interior lowlands of the continent the site of?

Mammals that produce an unprotected embryo that undergoes further development in a pouch are called ____________________.

What is the origin of the present topography of the Appalachian Mountains?

The present day Appalachian Mountains are the product of Cenozoic subduction and orogeny.

Mammals that give birth to live young that need little or no protection after birth are called ____________________.

Briefly state the arguments against the human cause for extinction of large mammals at the end of the Pleistocene.

How did the Cenozoic conditions of eastern and western North America differ?