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______________ are fractures along which no appreciable displacement has occurred.

_______ rich magmas are fluid, with low gas content.

Which of the following is true of glaciers?

The transfer of rock and soil downslope, under the influence of gravity is _______

_______ are areas of permeable rock strata or sediments that transmit water flow easily.

The _______ is the amount of time it takes for half of the remaining parent isotopes to decay into daughter isotopes.

The mechanism that operates along the oceanic ridge system, to create new seafloor, is _______

Mudflows that form on volcanos are called ____________.

Mountain systems, produced in part by volcanic activity associated with the subduction of oceanic lithosphere are called _______

What type of scale is used to quantify observed property damage to estimate the amount of ground shaking at a particular location?