Minerals
Glass is not considered a mineral because...
it does not have a crystalline structure
This person proposed the theory of Continental Drift
Alfred Wegener
What is the approximate age of the Universe?
~13.8 Ga (~14 Ga)
What is the name of an igneous rock that is intermediate and aphanitic in composition?
Andesite
What is the name given to the parent rock that undergoes metamorphism?
Protolith
This property can be used to show the color of a mineral in its powdered form
Streak
The Himalayas formed at this type of plate boundary:
Collisional (Continental-Continental)
What color of light will be emitted from an object that is moving toward us?
Blue (blue-shift)
If an igneous rock takes 3 hours to cool, it would be considered...
Volcanic/extrusive
Weathering, erosion, deposition, and lithification produces which kind of sedimentary rock?
Clastic
_____ is when a mineral breaks along planes of weakness in its crystalline structure
Cleavage
This geologic process and natural hazard can happen at any of the three plate boundaries
Earthquakes
H and He
Aphanitic Porphyritic
Recrystallization causes grain sizes to ______ when a rock is subject to heat and pressure.
Increase
The most abundant mineral group on Earth is....
Silicates
The age of the oldest oceanic lithosphere is...
~180 Ma
Which gases (name one) were common in Earth's early atmosphere?
Carbon dioxide; ammonia; methane; nitrogen; sulfur dioxide
Hornblende would be considered a ____ mineral...
Mafic
What do sedimentary rocks keep a good record of?
Depositional environment (environment in which they formed or were deposited)
The _____ of a mineral is indicative of how light reflects off of the surface of a mineral
Luster
Name one of the pieces of evidence for Plate Tectonics:
Age of the ocean floor; Magnetic stripes; Hotspots; Seafloor spreading
The coalescing of dust, particles, and debris to form the early Earth is known as....
Accretion
This igneous rock is phaneritic and black in color...
Gabbro
Eclogite facies metamorphic rocks commonly form in this geologic environment:
Subduction zone