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Chapter 5 Zumwalt Geo 111
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48
Geology
Undergraduate 1
02/23/2012

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Term
lateral moraine
Definition
pile of rocks at side of glacier
Term
synergistic
Definition
sum is greater than the addition of the parts
Term
yosemite
Definition
park with the best example of glacial features
Term
ABW
Definition
bathed the entire southern hemisphere in super cooled water
Term
gradual cooling
Definition
happened during the miocene
Term
antarctica
Definition
continent which started all of that cooling
Term
nothing
Definition
what is deposited by an advancing glacier
Term
oligocene
Definition
start of cooling for the last glaciation
Term
snowfield effects
Definition
cause of instantaneous cooling
Term
Milankovith
Definition
old astronomer who recognized orbital eccentricity
Term
albedo
Definition
the amount of sun energy reflected back into space
Term
terminal moraine
Definition
pile of rocks at end of glacier
Term
pluvial
Definition
lakes filled by rain and glacial melt
Term
periglacial
Definition
features associated with but not caused by glaciers
Term
hundred meters
Definition
how much sea level would rise if all ice melted
Term
minnesota
Definition
state with the most terminal moraines
Term
arete
Definition
mountain range over steepened by glacial erosion
Term
orbital eccentricity
Definition
change of earths orbit around the sun
Term
tilt
Definition
controls albedo
Term
five degree
Definition
how much cooler is the average temp during glaciation
Term
striation
Definition
scratch in glacial polish
Term
snowline
Definition
equilibrium line on glacier above which there is a net gain and below which there is a net loss
Term
retreat
Definition
what happens if a glacier loses more ice than it receives
Term
till
Definition
blanket of boulders deposited by retreating glacier
Term
deep sea cores
Definition
where do scientists get the best long term weather data
Term
glacier
Definition
a moving body of ice
Term
bonneville
Definition
periglacial lake which covered much of Utah
Term
accumulation zone
Definition
zone where there is a net gain of ice
Term
tillite
Definition
lithified till
Term
cycling
Definition
what do milankovitch effects control
Term
esker
Definition
sinous line of boulders running down a valley
Term
popoag
Definition
largest pluvial system in north america
Term
aggassiz
Definition
largest pleistocene pluvial system in north america
Term
ablation zone
Definition
zone where there is a net loss of ice
Term
erratic
Definition
very large boulder deposited with fine sediments
Term
hundred fifty meters
Definition
how much sea level would drop during a glaciation
Term
bonneville salt flats
Definition
salt flats in utah
Term
reflectivity
Definition
first component of the snow field effects
Term
tarn
Definition
small lake caused by differential erosion by glaciers
Term
instantaneous
Definition
how quickly does glaciation cool down
Term
matterhorn
Definition
a mountain which has been over steepened by four glaciers
Term
lahontan
Definition
pluvial system which covered most of Nevada
Term
minaretes
Definition
good example of an arete
Term
advance
Definition
what happens if glacier receives more ice than it loses
Term
horn
Definition
mountain which has been over steepened by glacial erosion
Term
moraine
Definition
pile of rocks deposited at end of glacier during equilibrium
Term
cirque
Definition
hole at the head of a glacier
Term
10 degrees celcius
Definition
temperature difference between the Eosene and peak glaciations
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