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chp 6
terms
16
Geology
Undergraduate 1
10/16/2007

Additional Geology Flashcards

 


 

Cards

Term
Weathering
Definition
any process by which rocks disintegrate or decompose
Term
Erosion
Definition
wearing away of any part of earths surface by natural processes
Term
Disintegration
Definition
process by which rock is broken into small pieces with no change in composition
Term
Decomposition
Definition
any chemical process whereby original composition of material is changed
Term
Mechanical weathering
Definition
rocks broken or reduced in particle size with no composition chanaged
Term
Chemical weathering
Definition
decomposition of rocks and minerals by dissolution, oxidation, and carbonation/hydorlysis
Term
Frost action
Definition
mechanical weathering process caused by alternate freezing and thawing of water in rock fracture
Term
Freeze-thaw cycle
Definition
frost action repeating
Term
Exfoliation
Definition
mechanical weathering by which concentric layers of rock are removed. (Removal of layers from an onion)
Term
Spheroidal weathering
Definition
form of weathering where concentric or spheroidal layers of rock are removed
Term
Plant wedging
Definition
plant roots fracture within rocks
Term
Oxidation
Definition
chemical weathering, rocks react to carbonic acid
Term
Hydrolysis
Definition
chemical weathering with water
Term
Activation energy
Definition
energy required to initiate chemical reaction or process
Term
Regolith
Definition
the layer of unconsolidated material accumulated above bedrock
Term
Soil
Definition
portion of the regolith that support plant life outdoors
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