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25 Cards in this Set

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Eras from old to new

Precambrian


Paleozoic


Mesozoic


Cenozoic



Dinosaurs inn what era?

Mesozoic

Periods from oldest to youngest

Cambrian


Ordovician


Silurian


Devonian


Mississippian


Pennsylvanian


Permian


Triassic


Jurassic


Crestaceous


Paleogene


Neogene


Quaternary

Decay rate of isotopes

Half-life

Carbon 14 made by

Nitrogen

Dating style for less than 50,000 years old

Carbon dating

Seismic waves that move like sound

P waves

Distance between seismograph and earthquake determined using what waves?

P and S

Seismic wave like sea wave

R wave

Separates either igneous or metamorphic rocks from sedimentary rocks.

Non-conformity

Most accurate age dating

Igneous

Low density salt dome has _________ gravity

Low

a transverse or longitudinal earthquake wave that travels through the interior of the earth

Body wave

Minimum # of seismographs required

3

What keeps mountains high?

Isosticy

Point of maximum curvature

Hinge

Found in crest of anticline

Oil

Eroded basin has youngest rocks in the _______

Middle

An elongate fold where all rock layers dip towards center

Syncline beds

Both limbs fall in same direction

Recumbant fold

Circular fold with all rock falling outward

Dome

Oil source rock

Black organic shale

Isotope of uranium

235

Highest quality coal

anthracite

Types of coal from low quality to high

Peat


Lignite


Sub-bituminous coal


Bituminous coal


Anthracite