Question 1

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

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Question 2

By the (Early/Middle/Late)____________________ Cambrian most of North America was covered by epeiric seas with the exception of a highland known as the _________________________.

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Question 3

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

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Question 4

The three phases of the Cordilleran orogeny,in order from oldest to youngest,were the ____________________,____________________,and ____________________.

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Question 5

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

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Question 6

During the Pleistocene of North America,there were at least ____________________ glacial stages.These stages,in order from oldest to youngest,are the ____________________,____________________,____________________,and ____________________.

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Question 7

The Gulf of Mexico began to form in the ____________________ Period.

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Question 8

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

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Question 9

The ____________________ orogeny in Europe is a mirror of the Taconic and Acadian orogenies in North America.

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Question 10

Continental growth during the Early Proterozoic development of Laurentia was related to ____________________ of ____________________-age cratons.

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Question 11

The most abundant rock type deposited during the Kaskaskian sequence was ____________________.

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Question 12

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

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Question 13

The orogens along the west coasts of the Americas,the eastern margin of Asia and the islands north of Australia and New Zealand are part of the _________________________.

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Question 14

The rock assemblage of sandstone,carbonate,and shale represents deposition on a(n)____________________ continental margin.

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Question 15

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

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Question 16

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

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Question 17

The first major transgression onto the North American continent is recorded in rocks of the ____________________ sequence.

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Question 18

Pangaea was formed from tectonic plates and ____________________.

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Question 19

The ____________________ orogeny that occurred in the Cordilleran mobile belt was caused by ____________________.

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Question 20

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

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Quiz 17: Earth History

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

By the (Early/Middle/Late) Cambrian most of North America was covered by epeiric seas with the exception of a highland known as the _____.

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

The three phases of the Cordilleran orogeny,in order from oldest to youngest,were the ,,and .