At which location (A, B, or .C) would a metamorphic regime occur that is characterized by high temperature and high pressure?
At which location (A, B, or .C) would a metamorphic regime occur that is characterized by high temperature and low pressure?
At which location (A, B, or .C) would a metamorphic regime occur that is characterized by low temperature and high pressure?
At which location (A, B, and .C)would blueschist form?
Metamorphism can lead to changes in _____.
All of the above
(mineralogy, texture, chemical composition)
________ is characterized by the segregation of light- and dark-colored minerals into thin layers or bands.
At high pressures and elevated temperatures of regional metamorphism, silicate rocks are more resistant to flowage and deformation than at low temperatures and pressures.
During metamorphic process, the rock essentially remains a _____.
Where does Earth's internal heat come from?
All of the above
(radioactive decay, energy from earths formation, magma)
Rock cleavage or slaty cleavage in slates is largely a consequence of abundant, parallel-aligned, very fine-grained mica flakes in the rock.
The altered rocks that form around a molten igneous body are called _____.
Slate and schist are both derived by metamorphism of shales and mudstones.
________ is thought to form by partial melting and in situ crystallization of the melted portion.
Which low-grade metamorphic rock, composed of extremely fine-sized mica and other mineral grains, typically exhibits well-developed rock cleavage?
Which of the following forms at the highest grade of regional metamorphism?
________ is typically formed by metamorphism of a sandstone.
What term describes the zone of contact metamorphism surrounding an intrusive magma body?
Foliated metamorphic rocks are composed largely of equidimensional grains of minerals such as quartz and calcite.
What major change occurs during metamorphism of limestone to marble?
Calcite grains grow larger and increase in size
What is the major source of heat for contact metamorphism?
Heat from a nearby magma body
Amphibolite is a foliated metamorphic rock composed principally of hornblende and plagioclase. How does it form?
By regional metamorphism of volcanic rocks such as andesite and basalt
What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?
Slate is a _____-grade metamorphic rock.
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, the heat is supplied from a nearby magma body
________ forms from the metamorphism of limestone or dolostone.
Carefully examine the photograph below of a metamorphic rock sample. The sample is shown as its actual size.
What is the name of this metamorphic rock?
Consider how this rock got its texture. Was it compressed from top to bottom or from side to side?
From top to bottom
A ________ forms at very high pressures but moderately low temperatures associated with subduction of oceanic crust and sediments.
What two, metamorphic rocks are composed predominantly of single minerals?
Marble and quartzite
Muscovite, biotite, and chlorite are common minerals found in phyllites and schists.
_______ is a strong, parallel alignment of coarse mica flakes and/or of different mineral bands in a metamorphic rock.
Tektites originate in what metamorphic environment?
High temperature associated with meteorite impacts
In which setting would regional metamorphism be most likely?
At great depths in the crust where two continents are colliding
In confining pressure, forces are applied _______.
Equally in all directions
Metamorphic rocks containing garnet are considered to be _______.
Slate's parent rock is _____.
Which of the following would exhibit sheared and mechanically fragmented rocks?
Fault movements at shallow depths
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
Which texture best describes a metamorphic rock with a planar arrangement of mineral grains?
High-grade, regional metamorphism produces significant and recognizable changes in the textures and mineral compositions of rocks.
Partial melting is an important process in the formation of migmatites.
What foliated, metamorphic rock is texturally intermediate between slate and schist?
Calcite is the main mineral constituent of the sedimentary rock limestone and of the metamorphic rock marble.