Chapters 14 and 15 Flashcards
Memorize
Area Strip Mining
Terrain is flat; Overburden stripped away, mineral deposit extracted, terrain refilled with overburden
Contour Strip Mining
Terrain is hilly; Overburden stripped away, mineral deposit extracted, terrain refilled with overburden
Convergent plate boundary
lithospheric plates are pushed together
Core
Inner zone of the earth;
Crust
Solid outer zone of the earth
What are the two types of crust?
Continental and oceanic crust
Is the inner core of the earth solid or liquid
Solid
Is the outer core of the earth solid or liquid
liquid
Depletion time
The time it takes to exhaust 80% of a known nonrenewable resource
Divergent
Lithospheric plates move away from each other
Earthquake
Shaking of the ground resulting from fracturing/displacing rock
What does an earthquake create?
A fault
Economic depletion
Exhaustion of 80% of a nonrenewable resource
Erosion
how earth materials in terms of a landscape are dissolved/loosens/worn away and removed, then deposited in another
Geology
Study of the earth’s dynamic history
What do geologists do?
Study and analyze rocks and the dynamics of the earth’s interior and surface
high-grade ore
contains a high amount of the desired material
Identified resources
Location, quality, and quantity of a deposit are known
Igneous rock
magma wells up, cools, and solidifies into rock masses
Lithosphere
Outer shell of the earth; rigid; outermost part of the mantle outside of the asthenosphere; found in earth’s plates
Asthenosphere
Under lithosphere; malleable,moves around the tectonic plates
Low-grade ore
Ore has a smaller amount of the desired mineral
Magma
Molten rock below earth’s surface
Mantle
Earth’s interior btwn core + crust
Metamorphic rock
Preexisting rock subjected to high pressures, high temps, chemical fluids, or a combo
Mineral
naturally occurring inorganic substance found as crystalline solid
Mineral resources
Mineral concentration that is useful
Mountaintop removal
Surface mining’ uses machinery to remove the top of a mountain to expose coal underneath
Nanotechnology
use atoms and molecules to build materials from raw elements