Geology Lab Vocab pt.1

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  1. Mineral
    Inorganic, naturally occurring solids
  2. Rock
    Attached assemblage of minerals
  3. Amorphous
    without a clearly defined shape or form.
  4. Crystal form
    repeated regular arrangement of specific elements in a solid
  5. Cleavage
    a sharp division; a split.
  6. Moh's hardness scale
    A scale used to measure the relative hardness of a mineral by its resistance to scratching.
  7. Ten minerals of the Mohs scale from 1 on the scale to 10:
    talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond
  8. Conchoidal fracture
    a fracture that does not follow any natural planes of separation
  9. Striations
    linear furrows generated from fault movement
  10. Intrusive
    aka plutonic; igneous rock formed from magma forced into older rocks at depths within the Earth's crust
  11. Extrustive
  12. Phaneritic
  13. Aphanitic
    grains of a rock too small to be seen with the naked eye
  14. phenocryst
  15. groundmass
    the finer grained mass of material in which larger grains, crystals or clasts are embedded
  16. Bowen's reaction series - high crystallization temp to low crystallization temp
    olivine, pyroxene, amphibole, biotite (black mica) orthoclase, muscovite (white mica), quartz
  17. Wentworth Grain size scale - small to large
    mud, silt, sand, gravel
  18. compaction
    the process by which a sediment progressively loses its porosity due to the effects of loading.
  19. Cementation
    hardening and welding of clastic sediments by the precipitation of mineral matter in the pore spaces
  20. Metamorphism
    the change of minerals or geologic texture in pre-existing rocks
  21. Foliation
    repetitive layering in metamorphic rocks.
  22. Regional metamorphism
  23. Contact metamorphism
    metamorphism due to contact with or proximity to an igneous intrusion.
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Geology Lab Vocab pt.1
2015-04-27 12:45:09
Geology lab

Geology Lab Vocab pt.1
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