Term
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Definition
undisturbed sedimentary rock remains
in horizontal layers. |
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Term
|
Definition
horizontal layers of old sedimentary
rock erode, then get covered by new layers. |
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Term
|
Definition
a folded or tilted rock comes
to the surface, erodes, and new
sediment is deposited |
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Term
|
Definition
a sedimentary rock layer is older than
the layers above it and younger
than the layers below it |
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Term
|
Definition
sedimentary layer over
unstratified rock |
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Term
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Definition
The principle that Earth's history can be explained by current geologic processes is? |
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Term
|
Definition
Younger layers of undisturbed sedimentary rock
are above older layers according to? |
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Term
|
Definition
The boundary between two sedimentary
rock layers is called a? |
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Term
|
Definition
The age of an object in
relation to the ages
of other objects is? |
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Term
Crosscutting Relationships |
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Definition
A fault or body of rock is younger
than any other body of rock it cuts throught
according to the law of? |
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Term
|
Definition
the time it takes for half of a sample of radioactive
isotope to decay |
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Term
|
Definition
determining age through comparison
of isotopes |
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Term
|
Definition
usig organic reamains to date objects |
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Term
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Definition
banded layers of sediment
deposited annually |
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Term
|
Definition
two protons and two newutons
emitted by the nucleus |
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Term
|
Definition
The numeric age of an
object is called? |
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Term
|
Definition
How much sedimentary rock is
deoposited over 1,000 years? |
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Term
used to date objects less than
70,000 years old
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Definition
Carbon-14 is and isotope... |
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Term
|
Definition
How many years of depostion are
represented by a single varve? |
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Term
rates of erosion may greatly vary
over a million years |
|
Definition
Rates of erosion are not used to date
geographical features over a million years
old because... |
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Term
|
Definition
fossilized remains of an organism
found in very dry places |
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Term
|
Definition
fossilized stone from the
digestive system of a
dinosaur |
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Term
|
Definition
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Term
|
Definition
minerals replace
organic material
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Term
|
Definition
carbonized impressions of
plants and fish |
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Term
formed during the
same period of time |
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Definition
Index fossils found in rock
layers in different areas of the world
indicate that the rock layers.... |
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Term
|
Definition
Almost all fossils are
discovered in... |
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Term
|
Definition
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Term
most bacteria cant surive
freezing temperatures |
|
Definition
A frozen organism does not decay
because.... |
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|
Term
lived during short spans
of geologic time. |
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Definition
Organisms that formed
index fossils... |
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