Kimberlite pipes are composed of materials intruded from as deep as the molten outer core.
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Q7: Seismic tomography uses seismic waves to get
Q8: The mantle is more dense than the
Q9: With increasing depth and pressure pyroxene changes
Q10: A low velocity zone in the mantle
Q11: Increasing pressure with depth causes P-wave velocities
Q13: Seismic tomography uses X ray waves to
Q14: Gravitational attraction is the same everywhere on
Q15: The geothermal gradient is about 25 C/km
Q16: Isostatic rebound is an alternative explanation for
Q17: According the principle of isostasy, a higher
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