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Geology
Question | Answer |
---|---|
Which of the following forms at the highest grade of regional metamorphism? | Schist |
What major change occurs during metamorphism of limestone to marble? | Calcite grains grow larger and increase in size. |
____ forms by contact metamorphism of mudstones and shales | Hornfels |
____ coarse-grained, metamorphic rock with alternating bands or stringers of light and dark minerals | Gneiss |
Which one of the following is not likely to be genetically associated with impact of an asteroid or large meteorite? | blueschists |
Which of the following metamorphic rocks could be used to neutralize acidic mine waters? | marble/limestone |
What is the major source of heat for contact metamorphism? | heat from a nearby magma body |
Hornfels are metamorphic rocks produced at great depths and high temperatures associated with regional metamorphism. | false |
A graben is characterized by ____________. | a hanging wall block that has moved down between two normal faults |
A(n) ____________ fault has little or no vertical movements of the two blocks. | strike slip |
Which one of the following stress situations results in folding of flat-lying, sedimentary strata? | horizontally directed; compressive stresses |
A horst is ____________. | an uplifted block bounded by two normal faults |
Which of the following combinations should favor folding rather than faulting? | high temperature and high confining pressure |
The concept that rocks of the crust and upper mantle are floating in gravitational balance is known as ____________. | isostasy |
Three major factors involved in metamorphism are: | elevated temperature, elevated pressure, and the chemical action of hot fluids |
Which of the following statements concerning slate is not true? | has abundant, coarse-grained mica |
A syncline is ____________. | a fold in which the strata dip toward the axis |
Brittle deformation would be favored over plastic deformation in which of the following conditions? | cooler temperatures |