lexy's friggen crossword puzzle

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Across
  1. 2. a subsea chasm extending along the crest of a mid-ocean ridge, locus of the magma upwellings that accompany seafloor spreading.
  2. 4. a type of fault whose relative motion is predominantly horizontal in either sinistral or dextral direction.
  3. 5. movement of continents resulting from the motion of crustal plates.
  4. 8. the hypothetical landmass that existed when all continents were joined, from about 300 to 200 million years ago.
  5. 9. a major geologic discontinuity or suture marking the juncture of lithospheric plates that have been joined by plate tectonics.
  6. 12. process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge
  7. 14. change in the Earth's magnetic field resulting in the magnetic north being aligned with the geographic south and vise versa
Down
  1. 1. magnetic polarization acquired by the minerals in a rock at the time the rock was deposited or solidified.
  2. 3. Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle.
  3. 6. line on an isotope ratio diagram denoting a suite of rock or mineral samples all formed at the same time.slope of the line is related to the age of the rock or mineral suite
  4. 7. an instrument for measuring the intensity of a magnetic field, especially the earth's magnetic field.
  5. 10. a linear feature that exists between two tectonic plates that are moving away from each other.
  6. 11. a proposed mechanism for plate motion in plate tectonics. Because mid-ocean ridges lie at a higher elevation than the rest of the ocean floor, gravity causes the ridge to push on the lithosphere that lies farther from the ridge.
  7. 12. pulling force exerted by a cold, dense oceanic plate plunging into the mantle due to its own weight.
  8. 13. process by which collision of the earth's crustal plates results in one plate's being drawn down or overridden by another, localized along the juncture (subduction zone) of two plates.