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51 Cards in this Set

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Calcium Rich feldspar, is apparent as the white rock on...
Moon
Earth lost what elements when the Sun first started exploding as a bomb
hydrogen, helium, neon, argon, nitrogen, and carbon,
Earth's mantle is composed of
Magnesium silicate
According to plate tectonics new crust forms at
Divergent margins
Throughout the universe, there is an approximate balance between
gravity and centrifugal effects
Earth's radius approximates
6400km being biggest beneath the equator
The shelf break lies
much farther off Wilmington than off Cape Hateras
Centrifugal crust averages about
2.7 g/cm3
Oceanic crust is marginally denser than centrifugal crust at
3.2 g/cm3
The chain silicates are
pyroxenes and amphiboles
The lightest element in the periodic table is ______ and is even lighter when it bonds
Hydrogen
The ultimate in tetrahedral sharing is characterized by quartz and the
feldspars
Fools gold is better known as
Pyrite
Basaltic pillows roll around the seafloor because
they remain molten in their interiors for several hours
Quartz accumulates as beach sand because it is
hard
resistant to weathering
lacks cleavage
When calcareous animals grow in the ocean
they extract calcium to do so
Plagioclase feldspars range in comparison betwen
CaAl2Si2O8
NaAlSi3O8
Water expands upon freezing ant this break rock in process is called
wedging
when exposed to an outcrop
shale decomposes faster than does sandstone when
Northern evergreen forests tend to grow on Spodosol whereas deciduous forests tend to grow
on Alifsol in the eastern USA
Recent uplift in the Tibet and the Andes has clogged regional rivers with
Sediment has clogged regional rivers
If a rock has lots of closely-spaced cracks
the weathering rate ma be high if a rock has lots of closely spaced cracks
In NC rocks with lots of fossils occur mostly near
Wilmington
On a seafloor with lots of rotting organic matter, the dissolved sulfate becomes
sulfide and precipitates with iron as fool's gold
Dolomite mat react with quartz during
Metamorphism
If heated to a few hundred degrees Celsius
Shale will become metamorphosed but will not melt if heated to a few hundred degrees Celsius
A Triassic Basin lies between
A Triassic Basin lies between Raleigh and Chapel Hill
Lord Kelvin and John Joly both estimated the age of the Earth before we know about radioactive age dating
Lord Kelvin and John Joly
Provided that there was no daughter isotope initially present when a mineral with a radioactive isotope was growing, the ratio of the daughter to the parent provides an estimate of the mineral's age
Mineral's age
The equation v=(2gH)^0.5
includes a square root so cannot be a linear relationship
Typically slumps become quickly eroded in
North Carolina, slumps become quickly eroded
A talus slope may lie at its maximum possible slope angle
a talus slope may lie at its maximum possible slope angle
Acid rain typically becomes neutralized in soil so rivers are not acidic
Acid rain typically becomes neutralized in soil so rivers are not acidic
As a result of pumping groundwater, the local water table eventually becomes a little steeper
As a result of pumping groundwater, the local water table eventually becomes a little steeper
Mexico City, southern Texas, and some parts of California have experienced subsidence because of pumping groundwater
Mexico City, southern Texas, and some parts of California have experienced subsidence because of pumping groundwater
At the peak of the last glaciation, snowfall may have been somewhat greater in the northernmost conterminous USA
At the peak of the last glaciation, snowfall may have been somewhat greater in the northernmost conterminous USA
Scandinavian conquest of North America almost certainly would have succeeded if
The world had not cooled, starting in 1250 AD
An amphitheater-shaped depression sits on the side of most glacially-eroded mountains
An amphitheater-shaped depression sits on the side of most glacially-eroded mountains
An "airplane-wing" effect is created by
An airplane wing effect is created by a sand grain sitting on a desert floor
South of San Diego CA sand dunes are marching inland from desert beaches
South of San Diego CA sand dunes are marching inland from desert beaches
At high elevation, there is a mobile boundary between tropical air and polar air
At high elevation, there is a mobile boundary between tropical air and polar air
In the Pacific the gulf stream has a twin current
In the Pacific the gulf stream has a twin current
Newton Discovered that gravity is proportional to the product of the masses of two objects divided by the square of the distance between them
Newton Discovered that gravity is proportional to the product of the masses of two objects divided by the square of the distance between them
Corals cannot thrive in a place like the central Louisiana coast
Corals cannot thrive in a place like the central Louisiana coast
Most of what we breathe does nothing for us
Most of what we breathe does nothing for us
Stratospheric ozone is important to our health
Stratospheric ozone is important to our health
Tropospheric ozone is hazardous to our health
Tropospheric ozone is hazardous to our health
Methane is a more powerful greenhouse gas, per molecule, than is carbon dioxide
Methane is a more powerful greenhouse gas, per molecule, than is carbon dioxide
Global Warming may bring more powerful storms along the East Coast and desert in the Southwestern US
Global Warming may bring more powerful storms along the East Coast and desert in the Southwestern US
Strain is the measurable product of stress
Strain is the measurable part of stress
Old rocks tend to be more deformed because they have endured more of Earth history
Old rocks tend to be more deformed because they have endured more of Earth history