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earth's innermost zone
surrounding the core, thick zone
outermost and thinnest zone
zone of hot, partly melted rock that flows and can be deformed like soft plastic
huge rigid plates that broke up into a dozen or so pieces
continental plate riding up over denser oceanic plates and pushes it down into the mantle
when oceanic plates move apart from one another creating cracks
breaking down rocks into smaller particles that help to build soil
magma reaching earth's surface though a central vent
movement in all directions through a surrounding rock
located on earth's surface directly above the focus
place where earthquake begins
measures magnitude of earthquake
series of large waves generated when part of the ocean floor suddenly rises or drops
element or inorganic compound that occurs naturally
Made of sediment-dead plant and animal remains and tiny particles
preexisting rock is subjected to high temperatures and high pressure
below or on earth's surface when magma wells up from the earth's upper mantle and the cools and hardens
interation of physical and chemical processes that change rocks from one type or another
smaller concentration of desired minerals
large concentration of desired minerals
identified resources from which we can extract the mineral profitably at current prices
soil and rock overlying a useful mineral deposite is removed
machines dig very large holes and remove metal ores
materials lying over a deposit are removed to expose the resource for processing
Mineral deposits that lie in large horizontal beds close to earth's surface
When heating ores release metals
time it takes to use up a certain proportion of the reserves of a mineral at any given rate of use
miners removing desired metal ores into the deposits
source of metals from the ocean floor that cover large areas of the Pacific Ocean Floor
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