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10 Cards in this Set

  • Front
  • Back
a material that forms the essential part of the earth's solid crust
an inorganic material derived from rocks, or a distinct mineral found in nature
chemically unaltered mineral since deposition and crystalizatoin from molten lava
primary mineral (ie: quartz, muscovite, feldspar)
results from the decomposition of a primary mineral
secondary mineral (ie: calcite, gymsum, clay minerals)
all physical and biochemical changes produced in rocks at earth's surface by stmospheric agents
physical weathering (4)
Temp: expansion and contraction due to heat
Abrasion by water, ice, and wind
Plants and animals: break and move
Dominant in very cold or dry environments.
Biochemical weathering (4)
Hydration: addition of H2O
Dominant in hot and wet conditions
Dissolution: water disolving substances
Carbonation and acid reactions
water molecules split into H+ and OH-, and H+ replaces a cation from the mineral
5 Factors influencing soil formation
1.parent material:lithosequence
5.Time (chronosequence)
-Soil is a dynamicnatural body having properties derived from the combined effects of climate biotic activities, as modified by topog, impacted by par mater over periods of time
4 Basic proceses of soil formation
1.Transfomations: phys, or chem modified
2.Translocation:mov't of org and inorg material(salt moving up)
3.Additions:inputs from outside sources(dust deposit)
4.Losses:(cation leaching, clay mov't)