the outer most layer of earth made of oxygen, silicon and aluminum
DESCRIPTION
Made of basalt Younger, more dense, thinnerTRANSCRIPT
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LAYERS OF EARTH
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Crust The outer most layer of Earth Made of Oxygen, silicon and aluminum
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Oceanic Crust Made of basalt Younger, more dense, thinner
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Continental Crust Made of granite Older, less dense, thicker
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Mantle Solid plastic-like rock 1800 miles thick Convection currents supply most of
Earth’s internal heat
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Outer Core Made of liquid metal: iron and nickel 1400 miles thick Creates Earth’s magnetic field
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Inner Core Made of solid iron 800 miles Slowly cooling and
getting larger
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Earth’s Layers
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Holes Man has explored the Earth to a depth of
7.6 miles
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Kola Superdeep Borehole: Russia
Largest hole ever dug: scientific expedition
12,262 meters (7.6 miles)
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The temperature at this depth was 180°C (356°F), at which point the rock became more like a plastic than a solid, stopping further drilling
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Argyle Diamond Mine: Australia Largest hand dug hole in the world Largest volume of diamonds produced
600 meters (1,970 ft)
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Chuquicamata: Chile
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Udachnaya: Russia
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Sinkhole: Guatemala
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Diavik Mine: Canada
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Mirny Diamond Mine: Russia
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Great Blue Hole: Belize
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Dean’s Blue Hole
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Zacatón: Mexico
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Bingham Canyon Mine: Utah
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Monticello Dam, California
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Kimberly Diamond Mine: South Africa
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Darvaza:Turkmenistan
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