Science Quiz / Mountain Building

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Can you name the Mountain Building

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hanging wall moves up at a dip of less than 45 degrees Celsius
a simple bend or flexure
up-arched circular fold; rock layers dip inward toward a central point
down-arched fold
fold axis is inclined; fold seems to plunge beneath adjacent rocks
results from forces acting in opposite directions along the same line; lead to block-faulting
permanent deformation of brittle rocks
accumulation in an opening ocean basin
addition of new material to continents
long period of uplift and erosion
deformed rocks return to their original shape when stress is relaxed
Folds and faults
continental interiors that have been structurally stable for a prolonged peropd of time
face of the fault or fault plane
horizontal and vertical movements
up-arched fold
any area of land that stands significantly higher, at least 300m, than the surrounding country and has a restricted summit area
down-arched circular fold; rock layers dip outward from a central point
related to convergence plate movements
deformation is accompanied by metamorphism and igneous activity
marine environment
chains of thousands of kilometers long composed of numerous mountain ranges
newly-thickened crust adjusts isostatically
ggreater uplift along normal faults
accumulation of great thickness of sedimentary or volcanic rocks
rocks are squeezed or compressed by external forces directed toward one another; lead to folding and faulting
episode of intense deformation of the rocks in a region
a group of closely spaced mountains or parallel ridges; related in age and origin
permanent deformation of ductile rocks
hanging wall moves down relative to the footwall
block of rocks that differ completely in their fossil content, structural trends and paleomagnetic properties from the rocks of the surrounding mountain system
an episode of intense mountain building
hanging wall moves up relative to the footwall
horizontal movements
most geologists think they formed elsewhere and were carried great distances as parts of other plates until they collided with continents
forces act parallel to one another but in opposite directions; lead to displacement along closely spaced planes
vertical movements
change in shape and/or volume of rocks due to stress

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