Hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this
What is lava
100
Of, relating to, or denoting a group of light-colored minerals including feldspar, feldspathoids, quartz, and muscovite
What is Felsic
100
A larger recrystallized grain occurring in a finer groundmass in a metamorphic rock
What is porphyroblast
100
Denoting rocks composed of broken pieces of older rocks
What is clastic
200
Relating to or denoting rock that has been extruded at the earth's surface as lava or other volcanic deposits
What is extrusive
200
Relating to, denoting, or containing a group of dark-colored, mainly ferromagnesian minerals such as pyroxene and olivine
What is mafic
200
An idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion
What is rock cycle
200
Layering within a stratum and at an angle to the main bedding plane
What is cross-bedding
300
Igneous rock that, while it was fluid, penetrated into or between other rocks and solidified. It can later be exposed at the Earth's surface after erosion of the overlying rock.
What is intrusive
300
A coarsely crystalline granite or other igneous rock with crystals several centimeters to several meters in length
What is pegmatite
300
Decorated with leaves or leaflike motifs
What is foliated
300
The action of deposing someone, esp. a monarch
What is deposition
400
The melting of part of the crystals or chemical constituents of rock, without melting all of the components. Since crystalline solids of different types melt at different temperatures, there are depths at which only part of a rock melts.
What is partial melting
400
Relating to or denoting a rock texture, typically found in volcanic rocks, containing distinct crystals or crystalline particles embedded in a fine-grained groundmass
What is porphyritic
400
Metamorphism affecting rocks over an extensive area as a result of the large-scale action of heat and pressure
What is regional metamorphism
400
A bed in which the coarsest particles are concentrated at the bottom and grade gradually upward into fine silt, the whole bed having been deposited by a waning current.
What is graded bedding
500
a method of refining substances based on differences in solubility
What is fractional crystallization
500
Relating to or denoting igneous rocks composed chiefly of mafic minerals
What is ultramafic
500
1.Metamorphism due to contact with or proximity to an igneous intrusion
What is contact metamorphism
500
Matter that settles to the bottom of a liquid; dregs