Exam 16: Cenozoic Earth History the Paleogene and Neogene Periods

As lava cools and contracts, geometric columnar joints may form.

How did orogens in the Pacific region differ from the Himalayan orogeny?

Discuss the various phases of orogenic activity that are part of the Cordilleran orogeny.

What kinds of Paleogene and Neogene deposits are found in North America's continental interior? What was the source of these sediments?

Orogenic activity during the Cenozoic was concentrated in the ____.

During Basin and Range faulting, debris from uplifted blocks are deposited in adjacent basins.

The Himalayas are no longer tectonically active.

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

The Basin and Range Province located in the ____ is characterized by ____ faults.

Discuss the formation of the Basin and Range Province of North America. How is it different from typical orogenic belts?

The Himalayas have experienced extreme uplift because continental masses are too buoyant to subduct.

Discuss the origins of the Himalayas in terms of plate tectonics. What type of plate boundary is represented?

The breakup of Pangaea and the formation of the Atlantic and Indian Oceans were responsible for the shrinking of the Pacific Ocean.

The Panthalassa Ocean eventually became the present-day ____ Ocean.

Why are granitic rocks found in Tibet? Why are shallow marine sedimentary rocks present in the higher parts of the Himalaya?

The Columbia River volcanic field is related to ____.

The Basin and Range Province is the site of crustal uplift and thinning.

Formation of Basin and Range mountains is a result of ____.

The Himalayan orogeny is the result of a collision between Africa and Eurasia.

Canyons formed due to stream erosion from the uplift of the Appalachian mountains are called __________________ __________________.