quiz 2 geol

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Author:
oreoscene
ID:
310708
Filename:
quiz 2 geol
Updated:
2015-10-31 21:26:05
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geol
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geol
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  1. What are atoms with the same number of protons but different number of neutrons called?
    sotopes
  2. What is the name of a shallow intrusion that intudes parallel to layering in the country rock?
    sill
  3. What type of rocks show phaneritic texture?
    intrusive (pluntonic) rocks
  4. how do caldaras form
    When the roof of the magma chamber collapses after an extensive eruption.
  5. What is the basic building molecular building block for silicate minerals?
    The silica tetrahedron
  6. What is the name of the silicate mineral(s) made from a double chain of silica tetrahedrons?
    Amphiboles
  7. Why is crystal form typically not used to identify a mineral?
    Mineral crystals grow in such a small space that it is difficult to distinguish the individual crystal faces.
  8. What is the name of the texture when basaltic lava appears blocky?
    A'a
  9. What types of lavas have the lowest viscosity?
    Mafic (basaltic)
  10. What is the name of the mineral(s) made from independent silica tetrahedrons bonded to metals?
    olivine

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