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49 Cards in this Set
- Front
- Back
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turning sediment into rock
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diagenesis
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development of more stable minerals from unstable ones
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recrystallization
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compaction and cementation
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lithification
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transport sediment as solid particles (rock that is determined by its grain size)
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detrital
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sediment once in solution
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chemical
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energy due to wave action
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sedimentary facies
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sediment types accumulate adjacent to each other _________
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at the same time
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calcium carbonate, precipitate process
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inorganic rock
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coal, limestone, biochemical
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organic rocks
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used to interpret earth history
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sedimentary structures
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detrital, layering affect
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bedding planes
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ancient ripples, angular trucation
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cross beds
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coarse to fine grain or vice versa
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graded bedding
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current show direction, asymmetrical
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ripple marks
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arid environment, metamorphism
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mud cracks
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detrital, layering affect
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bedding planes
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ancient ripples, angular trucation
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cross beds
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coarse to fine grain or vice versa
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graded bedding
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current show direction, asymmetrical
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ripple marks
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arid environment
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mud cracks
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contact metamorphism
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heat
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dynamic metamorphism
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pressure
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regional metamorphism
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heat and pressure
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re-crystallize results in new stable mineralsent
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heat- 2 sources of from magma and geothermal gradient
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equal pressure on all sides
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lithostatic pressure
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non equal pressure
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differential
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agents of metamorphism
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heat, pressure, fluid, parent rock
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planar arrangement of mineral grains
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foliation
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foliation forms by:
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rotation of platy or elongated minerals. or re crystallization
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planar surface along which rocks split
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slaty cleavage
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platy minerals exhibit layered structure
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schistosity
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high grade metamorphic, minerals segregate, distinctive banded appearance
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gneissic
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deformation is minimal, equidimensional crystals
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non-foliated
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large grains surrounded by fine matrix
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porphydroblastic
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low to high grade foliation
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slate, phyllite, schist, gneiss
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rise in temp from magma, zone of alteration
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contact metamorphism
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concentric zones of metamorphism around an intrusion
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aureoles
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ion rich fluids cause chemical reaction. widespread along axis of MOR
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hydrothermal metamorphism
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fault zones where rocks are subjected to high differential pressure
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dynamic metamorphism
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heat and pressure, large scale mountain building events
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regional metamorphism
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downslope movement of earth under gravity
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mass wasting
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most rapid mass wasting is in _________
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young mountains
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important factors of mass wasting
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water, steep slopes, vegetation, earthquakes
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material moves as a coherent mass
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slide
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oversteepened slope, rotational slide, curved surface
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slump
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break line where slump occurs
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surface of rupture
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bedrock slides
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rock slide
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soil and regolith with water, more vicous, composed of volcanic materials
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debris flow
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hillsides rich in clay and silt
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earth flow
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