Transcript Jeopardy 8,15(#2) - Heritage Collegiate

Let’s go on
a date.
It’s not my
Potpourri Deformation Potpourri
Fault..
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This is used to tell the number
of years that have passed since
an event occured.
What is numerical date?
You get this by using radiometric
dating.
What is absolute age ?
Rocks are placed in their
proper sequence of formation.
What is relative dating?
The procedure of calculating
the absolute ages of
rocks and minerals that
contain certain radioactive
isotopes.
What is radiometric dating?
Geologists have decided the
whole geological history into a
unit of varying magnitude.
What is the geologic time scale?
A fault in which the movement is
parallel to the dip of the fault.
What is a dip-slip fault?
A fault in which the rock above
the fault plane has moved down
relative to the rock below.
What is a normal fault?
This fault occurs when the
hanging wall block moves up
relative to the foot wall block.
What is a reverse fault?
A low-angled reverse fault.
What is a thrust fault?
A fault along which the
movement is horizontal.
What is a strike slip fault?
This is formed by down folding
of rock layers.
What is a syncline?
This is formed by upfolding or
arching, of rock layers.
What is an anticline?
This is a valley formed by the
downward displacement of faultbounded blocks.
What is a graben?
A Danish anatomist, geologist,
and priest credited with being the
first to recognize sequence of
historical events in an out crop of
sedimentary rock layers.
Who is Nicolaus Steno?
This is when rocks of similar age
are in different regions.
What is correlation?
Fossils were found to be time
indicators and the most useful
means of correlation.
What are index fossils?
This deformation acts as a
rubber band. The rock will
return to nearly it’s original
size and shape when the stress
is removed.
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What is elastic deformation?
A type of solid-state flow that
produces a change in size and
shape of a rock body without
fracturing. Occurs at depths
where temperature and confining
pressures are high.
What is ductile deformation?
This deformation tends to
behave like a brittle solid and
fractures once it’s strength is
exceeded.
What is
brittle deformation?
This refers to all changes in
the original form and/or size,
and/or location and/or
orientation of a rock body.
What is crustal deformation?
This is when stress is applied
to a rock body, the rock will first
deform elastically.
What is elastic
deformation?
Fragments of one rock unit
that have been enclosed within
another.
What are inclusions ?
This is an elongated, uplifted
block of crust bounded by
fault.
What is a horst?
A push or pull which tends to
make stationary objects move
or change the motion of bodies
already moving.
What is force?
Time required for one half of the
atoms of a radioactive substance
to decay.
What is half-life?