Exam One VI Flashcards Preview

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Flashcards in Exam One VI Deck (14):
1

Melting of oceanic crust along subduction zones and over large mantle plumes produce

Felsic Magma

2

Around 3 billion years ago, _______ may have been the first continent on Earth

Ur

3

The Iapetus and Proto-Paccific Oceans formed with the break-up of the supercontinent ________ about 700 million years ago:

Rodina

4

The supercontinent ________ bike up around 195 million years ago into the smaller supercontinents Laurasia and Gondwanaland

Pangea

5

Gondwanaland consisted of the following continents except ________:

Asia

6

Laurasia consisted of the following continent except _______

Asia

7

The Basin and Range province of the southwestern U.S formed of crustal

tension when western edge of N. America became a transform margin

8

_________ describes the quasi-periodic aggregation and dispersal of Earth's continental crust:

Supercontinent cycle

9

The belt of volcanoes along the margins of the Pacific Ocean is referred to as

CircumPacific Ring of Fire

10

_______ is mountain-building by the process of folding and faulting

Orogeny

11

The major geologic feature formed as a result of the Laramide Orogeny was the ________

Rocky Mountain

12

The development of the Rocky Mountains was attributed to _________

Flat-slab subduction as a result of increase in rate of plate convergence

13

A cartoon is a(n)

old and stable part of the continental lithosphere

14

During the Traissic Period about 250 Ma, the ______ was thrusted up and was sutured to the western margin of N. America as a result of convergence along a west-dipping subduction zone:

Sonoma Terrane