Mining/Energy Flashcards
Impacts of groundwater mining
Aquifers frequently are pumped beyond their flow and recharge capacities.
controls of groundwater
porosity and permeability of materials beneath the surface
impacts of mining groundwater
the pumping out of groundwater faster than it can be replenished.
concentration factor
measure of a metal’s concentration necessary for profitable mining
it is how many times that average crustal concentration of a metal must be increased to be mined at a profit
resource vs reserve
a resource is a source of raw material used by society (ie minerals, coal, trees, water); reserves are the discovered deposits of a resource that can be profitably extracted at current market prices.
mineral deposits (hydrothermal, plutonic, placer, evaporates
stableminerals at the earth’s surface weather from the original rock and areconcentrated in stream and shoreline deposits during the transport anddepositional process
formation and uses of coal
decay of tiny marine organisms that accumualted on the bottom of the ocean millions of years ago then remains were burried by sediements and heated until they became complex with energy, molecules migrated into rocks that contain them heating and transportion
80% depleted by 2050-2100
formation of hydrocarbons
Aka crude oilMade of hydrocarbons Liquid n gas forms Used for -plastic Fertilizers Paints Engergy
nuclear energy – advantages and problems
PROS: it does not emit GHGs, does not consume fossil fuels, clean burning fuel that provides energy using less than what we would use when using fossil fuels, and a small amount of matter creates a large amount of energy
CONS: very expensive to build the waste products are dangerous and can cause a lot of damage if it is not contained properly, the fuel is very radioactive and needs to be stored for many years after use
basics of solar, wind , geothermal, bio, hydropower technology (pros/cons)
Pros=Good for the environment, renewable energy sources, agricultural and rural development, conomical energy
Cons=Unreliable energy source, threat to human and wild life, limitation of deployment,
soil formation and erosion
losing farmland soil 7 times faster than it is created