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20 terms

ESCI 111 Quiz 14

STUDY
PLAY
The concept that rocks of the crust and upper mantle are floating in gravitational balance is known as ________.
isostasy
According to the crustal, gravitational balance idea, which of the following statements is true?
A mountain range undergoing erosion should uplift slowly.
The Valley and Ridge Province of the Appalachian Mountains is characterized by ________.
sedimentary strata folded in late Paleozoic time
Which of the following best describes the geology of the Pacific coastal regions of western North America including Alaska?
Geologically different, microcontinent-sized fragments and terranes, formed elsewhere, were tectonically accreted to North America.
How were the Ural Mountains (Russia) formed?
Marine strata in a basin between the former Asian and European plates were squeezed, folded, and uplifted as the two joined to form the Eurasian plate.
The ranges of the central and southern Rocky Mountains ________.
are uplifted blocks that typically have cores of Proterozoic igneous and metamorphic rocks
During late Paleozoic time, the tectonic configuration of the Appalachian region in eastern North America was most similar to the ________.
areas of Africa and Arabia bordering on the Red Sea
The Sierra Nevada, CA, and Teton, WY ranges are examples of ________.
fault blocks uplifted by late Tertiary to Quaternary normal faulting
The ________ are a geologically old mountain range folded and deformed during the Paleozoic.
Appalachians in the eastern United States
Topographically high-standing, mountainous areas generally ________.
are underlain by greater than average thicknesses of lower density, crustal rocks
Which one of the following is an example of an isostatic movement?
uplift of areas recently covered by thick, continental ice sheets
Folded limestones that occur high in the Himalayas were originally deposited as sediments in a ________.
marine basin between India and Eurasia
Since the early Mesozoic, the ________ has been passive tectonically.
eastern margin in the United States
Accretionary wedges are formed ________.
at the edge of the overriding plate facing a subduction zone
The term ________ refers specifically to geologic mountain building.
orogeny
Volcanism along a continental arc is dominated by the eruption of ________.
andesitic lavas and pyroclastic materials
A(n) ________ is a zone where two continents collide, often preserving slivers of oceanic lithosphere between the colliding plates.
suture
The ________ are a geologically old mountain range folded and deformed during the Paleozoic.
Appalachians in the eastern United States
The ________ have crust about twice as thick as normal.
Himalayan Range and Tibetan Plateau in northern India and southwestern China
Which of the following mountain is oldest?
The Appalachians