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Which of the following forms at the highest grade of regional metamorphism?

schist

What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?

micas

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

________ foliated, fine-grained metamorphic rock formed from mudstone and shale.

phyllilte

________ nonfoliated metamorphic rock consisting mostly of calcite.

marble

________ coarse-grained, metamorphic rock with alternating bands or stringers of light and dark minerals.

gneiss

Tektites originate in what metamorphic environment?

high temperatures associated with meteorite impacts

________ is a strong, parallel alignment of coarse mica flakes and/or of different mineral bands in a metamorphic rock.

Foliation

________ is a nonfoliated rock formed by contact metamorphism of a shale or mudstone.

Hornfels

Which of the following would exhibit sheared and mechanically fragmented rocks?

fault movements at shallow depths

Which of the following best describes the conditions of contact metamorphism?

Pressures are fairly low, the rock is in the upper part of the crust, and heat is supplied from a nearby magma body.

________ forms from the metamorphism of limestone or dolostone.

Marble

What foliated, metamorphic rock is texturally intermediate between slate and schist?

phyllite

________ is characterized by the segregation of light- and dark-colored minerals into thin layers or bands.

Granitic gneiss

Which of the following lists the rocks in the order of increasing grain size and increasing grade of metamorphism?

slate, phyllite, schist

What is the major source of heat for contact metamorphism?

heat from a nearby magma body

In which setting would regional metamorphism be most likely?

at great depths in the crust where two continents are colliding

What term describes the zone of contact metamorphism surrounding an intrusive magma body?

aureole

During metamorphism, what is the major effect of chemically active fluids?

aid in the movement of dissolved silicate constituents and facilitate growth of the mineral grains

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