Mountain Belts
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| Geologists believe that when the thick and high part of a mountain belt becomes too high and gravitationally unstable _____ occurs. | gravitational collapse and spreading
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| The Himalayan Mountains formed as the result of ______ convergence | continent-continent
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| Terranes that can be shown to have traveled great distances are known as _____ terranes. | exotic
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| A(n) _________ mountain range, such as the Basin and Range and Tetons, implies a horizontal extension strain. | fault block
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| The system approach regards mountains as the products of three closely interdependent components. Which of the following is not one of those components? | meteor impacts
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| According to the concept of ____, lighter less dense continental crust "floats" higher on the mantle than denser oceanic crust. | isostacy
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| In some mountain belts the crust breaks into fault-bounded blocks resulting in _____ mountain ranges | fault-block
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| Of the two major mountain belts in North America, the _______ are in the West. | North American Cordillera
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| During the last couple of decades, geologist have used a _____ approach to gain insight into the growth and wearing away of mountains. | system
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| A _____ terrane has rock types and ages that do not seem to be related to the rest of the geology of a mountain belt. | suspect
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| Major mountain belts with higher mountain ranges tend to be geologically ___________ relative to those where the mountains are lower. | younger than
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| _____ faults in the Tibetan plateau indicate that gravitational collapse is taking place. | Normal
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| Late stage normal faulting in a mountain range is a result of _______. | vertical uplift or extension
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| A ______ is the source of sedimentary and volcanic material accumulating along a convergent boundary | magmatic arc
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| A _____ is a group of closely spaced mountains or parallel ridges that may show a history of intrusive tectonic activity | mountain range
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| The continental crust is _______ beneath mountain belts than under the craton. | thicker
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| Most of the _____ of the United States has/have a very thin blanket - only 1000 to 2000 meters - of sedimentary rock layers. | craton
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| _____ are chains thousands of kilometers long composed of numerous mountain ranges. | Mountain belts
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| Continents grow bigger as _______. | mountain belts evolve along their margins
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| The _____ is(are) the product of oceanic-continental convergence and Earth's second highest mountain belt. | Andes
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| The _____ resulted from the collision of Asia and Europe. | Ural Mountains
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| Extension and normal faulting take place in a mountain range ____. | when rock at high level flows outward
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| Most of the world's mountains existing today are a result of ____. | intense deformation, isostasy, and weathering and erosion
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| ____, intermixed granitic and metamorphic rock, may represent those parts of mountain belts that were once at even deeper levels of the crust. | Migmatites
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| At the close of the Paleozoic, eastern North America was attached to what is now _______. | Europe and Africa
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| Frequent earthquakes, offshore trenches, and active volcanoes perched on top of older rock are all indications of ____. | active mountain ranges
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| The region of a continent that has been structurally stable for a long period of time is called the ______. | craton
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| Volcanic rocks, mostly _______, accumulate near a convergent plate boundary | andesites
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| The once deep-seated roots of former Precambrian mountain belts are the _____ rock for the now stable, central part of the continent. | basement
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| In many mountainous regions are found ____, which are characterized by large thrust faults stacked one upon another. | fold and thrust belts
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| Geologists regard most bodies of ultramafic rock as being _______. | mantle material faulted into the crust during orogeny
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| Migmatites must have been transported much higher in the crust during and after ____. | an orogeny
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| A(n) __________ is an episode of intense deformation of the rocks of a region. | orogeny
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Created by:
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