What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?
What major change occurs during metamorphism of limestone to marble?
calcite grains grow larger and increase in size
________ coarse-grained, metamorphic rock with alternating bands or stringers of light and dark minerals.
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.
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.
________ is characterized by the segregation of light- and dark-colored minerals into thin layers or bands.
Which of the following lists the rocks in the order of increasing grain size and increasing grade of metamorphism?
slate, phyllite, schist
In which setting would regional metamorphism be most likely?
at great depths in the crust where two continents are colliding