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Geology 101 Lab
Final Exam
54
Geology
Undergraduate 1
11/27/2011

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Cards

Term
flux
Definition
movement of materials from one reservoir to another
Term
mass
Definition
amount of matter in an object
Term
weight
Definition
force with which one object is attracted to another
Term
king henry died monday drinking chocolate milk
Definition
kilo hecto deca meter decimeter centi millimeter
Term
diagnostic property
Definition
immediately help identify mineral
Term
elastic and flexible
Definition
elastic-return to shape.
flexible-new shape
Term
silicates
Definition
quartz
feldspars
amphiboles
pyroxenes
silicon and oxygen
ferromagnesian-iron and magnesium
nonferromagnesian
Term
sulfide
Definition
pyrite and sphalerite
Term
sulfates
Definition
gypsum SO4 complex
Term
halide
Definition
halite and fluorite
Term
crystalline texture
Definition
like a three dimensional jigsaw puzzle
Term
clastic texture
Definition
cemented appearance
Term
felsic
Definition
most silica, light colored, low specfic gravity
Term
decompression melting
Definition
stretching of lithosphere at divergent plate boundary (ocean ridge)
requires no additional input of heat
Term
siliceous rocks
Definition
consist primarily of quartz
Term
argillaceous rock
Definition
consist mostly of clay
Term
carbonate rock
Definition
mostly of calcite or dolomite
Term
evaporite rock
Definition
consist of salts that precipitate when saltwater evaporates
Term
organic rock
Definition
may be more than 90% carbon
Term
clastic texture
Definition
discrete grains are held together by cement
Term
crystalline texture
Definition
grains are interlocking
Term
depositional environment-glacial
Definition
unosrted sediment containing angular clasts,large clasts suspended in finer matrix
Term
depositional environment-fluvial (river)
Definition
channels of sandstone or conglomerate in some places surrounded by layer of mudstone, hematite containging cement
Term
depositional environment-beach
Definition
well sorted, cross bedded sandstone
Term
depositional environment-shallow marine
Definition
fossiliferous limestone
Term
depositional environment-deep marine
Definition
shale, chert, micrite, and chalk
Term
depositional environment-swamp
Definition
coal
Term
depositional environment-alluvial fan
Definition
conglomerate and arkose
Term
depostional environment-desert dune
Definition
well sorted sandstone with large cross beds
Term
agents of metamorphism
Definition
heat, pressure, and hydrothermal fluids
Term
lithostatic pressure
Definition
results from burial of rocks within the earth and the pressure is equal in all directions
Term
when the chemical composition of a metamorphic rock changes significantly due to reaction with hydrothermal fluids we say that the rock has undergone...
Definition
metasomatism
Term
contact metamorphism
Definition
thermal metamorphism
rocks are subjected to heat and there is no chnage in pressure and no differential stress, igneous intrusion
Term
regional metamorphism
Definition
increases in temperature and differntial stress (squeezing and shearing)
Term
burial metamorphism
Definition
buried deeply by overlying sediment
Term
dynamic metamorphism
Definition
rock undergoes differntial stress in response to shear along a fault zone but does not undergo a change in temperature or lithostatic pressure. hydrothermal fluids may be present in all metamorphic settings.
Term
granoblastic texture
Definition
metamorphic rocks with random grain orientations
Term
low grade rock
Definition
has changed little
Term
_______ metamorphism occurs in a collisional mountain belt.
Definition
Regional
Term
sinuosity
Definition
length of stram channel (meanders and all) / straight line distance between the same points
Term
streams erode...
Definition
vertically and laterally
Term
dendritic
Definition
surface materials are equally resistant to erosion.
Term
trellis
Definition
ridges of resistant rock alternate with valleys underlain by weaker material
Term
rectangular
Definition
indicate zones of weakness (faults, fractures)
Term
radial
Definition
streams flow either outward (centrifugal) from a high point, like a volcano or inward (centripetal) toward the cetner of a large basin
Term
annular
Definition
concentric rings of alternating resistant and weak rocks-typically found in structures called domes and basins
Term
groundwater-eroded landscape is called ___ ________.
Definition
karst topography
Term
tension
Definition
which is stretching or pulling apart (outward pointing arrows)
Term
compression
Definition
squeezing or squashing in a specific direction (inward pointing arrows)
Term
intrusive contact
Definition
boundary surface of an intrusive igneous body
Term
conformable contact
Definition
boundary between successive beds, sedimentary formations, or volcanic extrusions in a continuous stratigraphic sequence
Term
unconformable contact (unconformity)
Definition
period of erosion has interupted disposition
Term
fault contact
Definition
two units are juxtaposed across a fault
Term
_ waves are faster than _ waves.
Definition
P waves, S waves
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