Mountain Building - Final Review Flashcards
The mountains and valleys of the Basin and Range Province of the western United States formed in response to ________.
tensional stresses and normal-fault movements
Tensional forces normally cause which one of the following?
normal faults
A(n) ________ fault has little or no vertical movements of the two blocks.
strike slip
A transform fault is ________.
a strike-slip fault that forms the boundary between tectonic plates
The ________ are a geologically old mountain range folded and deformed during the Paleozoic.
Appalachians in the eastern United States
The term ________ refers specifically to geologic mountain building.
orogenesis
A good example of a present-day, passive continental margin is the ________.
east coast of North America
A(n) ________ is a thick accumulation of sediments and small, tectonic blocks formed of material scraped off a descending, lithospheric plate.
accretionary-wedge complex
Folded limestones that occur high in the Himalayas were originally deposited as sediments in a ________.
marine basin between India and Eurasia
Which one of the following is an example of an isostatic movement?
uplift of areas recently covered by thick, continental ice sheets
True or False? Fractures in rock that have not involved any fault slippage are called joints.
true
True or False? In a reverse fault, the hanging wall block moves up relative to the footwall block.
true
True or False? Normal faults form in response to horizontal, tensional stresses that stretch or elongate the rocks.
true
True or False? Horizontal, compressive deformation involves shortening and thickening of the crust.
true
True or False? Normal faulting is associated with convergent plate boundaries.
false
True or False? Shear stress is associated with divergent plate boundaries.
false
True or False? Reverse faulting is the result of tensional forces.
false
True or False? Compressional forces apply at divergent plate boundaries.
false
True or False? Shortening and thickening of the crust are associated with transform fault boundaries.
false
True or False? Normal faulting can occur at rifting zones.
true
Carefully study each illustration below to determine the type(s) of geologic structure(s) it contains. Match each one to the correct answers listed.
a)Normal b)Reverse c) Thrust
Identify the geologic structure in the following figure.
Anticline
Identify the subsurface geologic structure in the following figure.
Syncline
What kind of the geologic feature does the following figure present?
Transform Fault
Stress that is applied equally in all direction
Confining pressure
Stress applied unequally in different directions
Differential stress
3 types of stress
Compressional
Tensional
Shear
