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Mountain Building Flashcards | StudBud
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Mountain Building
Mountain Building
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#earthscience/chapter11
Flashcards
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Answers
1
The concept of a floating crust in gravitational balance is called what?
isostasy
isostatic adjustment
gravitational balancing
buoyancy
2
Crust collides with a continental plate becoming stuck or embedded into a continent through __.
accretionary wedge
suction
accretion
subduction
3
These are downfolds or troughs.
synclines
monocline
anticline
basins
4
_____ are large, step-like folds in otherwise horizontal sedimentary strata.
anticline
stair steps
monocline
syncline
5
A(n) ______is usually formed by the unfolding,or arching, of rock layers.
syncline
monocline
domes
anticline
6
A _____ occurs when the hanging wall block moves down relative to the footwall block.
thrust fault
strike-slip fault
normal fault
reverse fault
7
When crust is stretched during normal faults, the uplifted structures are called what?
grabens
ridges
horsts
mountains
8
____ are reverse faults with dips of less than 45 degrees which means the rock layers bend.
reverse fault
thrust fault
strike-slip fault
normal fault
9
Large-scale normal faults where crust is uplifted and tilted are called _____.
volcanic mountains
folded mountains
fault-block mountains
dome mountains
10
A ____ is a fault in which the hanging wall block moves up relative to the footwall block.
strike-slip
normal fault
thrust fault
reverse fault
11
The process of establishing a new level of gravitational balance is called what?
mountain building
isostasy
isostatic adjustment
floatation
12
What is it called when there is change in the original shape and/or size of a rock body?
stress
strain
bending
deformation
13
Geologists refer to the collection of processes involved in mountain building as what?
volcanic eruptions
isostasy
isostatic adjustment
orogenesis
14
What is the change in shape or volume of a body of rock as a result of stress?
stress
deformation
compressional
strain
15
Faults where movement is horizontal and parallel to the trend, or strike, of fault surface is?
thrust fault
normal fault
strike-slip fault
reverse fault
16
___ are crustal fragments that have geologic history distinct from that of adjoining terranes.
trench
mountain systems
mountain ranges
terrane
17
When crust stretches in a normal fault, the block that drops down is called a ______.
graben
downfold
valley
horst
18
Mountains that formed primarily by folding are called ______.
fault-block mountains
dome mountains
folded mountains
volcanic mountains
19
Scraps of oceanic crust and sediment from the land at a convergent boundary create a(n) ____.
mountain
trench
new landmass
accretionary wedge
20
What is the force per unit area acting a solid?
strain
deformation
surface area
stress