bullshit 2 Flashcards
radioactive decay by beta particle emission
atomic # is one more than the parent. mass numbers are the same
Cenozoic is also known as
new life
how do kettles form
melting of large blocks of ice left by a glacier
glacial striations
grooves created by rocks scratching against bedrock at the base of a glacier
result of continental collision during assembly of pangea
himalays
rock outcrop with crossbreeds in well-sorted quartz sandstone.
what is the depositional environment of the sandstone
sand dune
sequence of a decrease In air content
snow
granular ice
firn
glacial ice
melting of icebergs floating during the last 50,000 years
sea level rises 100 meters
icebergs form through
calving
fossils are most common in what rock type
sedimentary
ground water table
same general shape as the topography
difference between saturated / unsaturated zones fo groundwater:
pore spaces in sautéed = filled with water
pore spaces in unsaturated = not filled with water
layers of sediment extend laterally in all directions
principle of lateral continuity
in Grand Canyon, the contact between the Vishnu Schist and overlying sediments is what type of uncofmrity
noncomformity
combination for best groundwater reservoir
high permeability / porosity
ediacaran fauna
earliest known evidence of multi-cellular organisms
Georgia Tech campus is an example of ___ geologic provicen
piedmont
earth covered by glaciers during :
Cenozoic
graded beds of sand, silt, and mud deposited on submarine fans are called
turbidites
a coprolite is
fossilized animal excretion
not a major extinction event
end of cambrian
most detailed bathymetric maps of Atlanta, pacific, Indian Ocean basins were produced using
satellite data of avg. sea surface hieght
when water is pumped from a well, a depression produced under water table is
cone of depression
sedimentary rock outcrop with no layering and particles ranging from boulders to clay . this deposit is
glacial morraine
extensive deposits of windblown silt are
loess
pangea began to break during
mesozoic
why do the great basins / Mojave deserts of western NA exist
the two deserts lie in the rain shadows of mountains
NA cordillera
western NA
folded / faulted rocks that formed during Paleozoic era
applachain
the higher permeability of an aquifer means
faster the groundwater will flow
burrow =-
trace
addition of carbon dioxide to groundwaters flowing through limestone layers will :
make waters more acidic resulting in limestone dissolution
how do venticrafts form
by sandblasting
approx age of earth
4.5 billion
aquifer above regional water table
perched water table
of major mass extinctions
5
blue ridge province of Appalachia ford belt was thrust as sheets over the top of which geologic province
valley and ridge province
mountain remnants in desert regions
inselbergs
permeability is
ability to transmit water through connected pore spaces
element formed during big bang
Hydrogen
by ___ period, large tropical swamps extended across NA eventually becoming the vast coal deposits of today :
pennsylvanian
spring tides occur when
sun-earth-moon align straight line
accumulation of rock, sandy, or clayey material deposited at end of glacier :
morraine
dust blowing from desert regions over certain ocean regions stimulates biological productivity primarily through the addition of
iron
1000 atoms, 250 parent atoms left, half-life of 1 million years . how old is this guy?
2 million years
