Term
| Duward owen-EXEC SECRETARY |
|
Definition
|
|
Term
1ST FULL TIME SECRETARY
GEORGE SHEETZ |
|
Definition
| ALPHA CHAPTER- COLLEGE OF CHARLESTON |
|
|
Term
|
Definition
accumulations of physically
transported rock fragments resulted from
weathering of preexisting rock |
|
|
Term
|
Definition
accumulations of substances
precipitated from water by chemical
reactions |
|
|
Term
|
Definition
same as chemical plus addition
of biological material |
|
|
Term
|
Definition
| LAKE, RIVER, DESERT, ALLUVIAL |
|
|
Term
|
Definition
|
|
Term
| WHICH MINERAL IS USED TO DETERMINE A METAMORPHIC P-T PATH? |
|
Definition
|
|
Term
|
Definition
measure of variation of
temperature with depth (average 30°C/km) |
|
|
Term
|
Definition
change in a rock’s bulk
composition |
|
|
Term
|
Definition
– angle of steepest
descent of the bed
from the horizontal
– the amount of tilting
of the beds from the
horizontal. |
|
|
Term
|
Definition
| right angle to dip direction |
|
|
Term
| The difference between a fault and a joint is that |
|
Definition
rocks on either side of a fault have moved,
whereas rocks on either side of a joint have
remained stationary |
|
|
Term
|
Definition
| a low angle reverse fault |
|
|
Term
Reverse faults form in response to ______
forces. |
|
Definition
|
|
Term
Which of the following statements about rock
deformation is false? |
|
Definition
Deep crustal rocks are more likely to deform
ductilely than shallow crustal rocks.
B) Hotter rocks are more likely to deform ductilely
than cooler rocks.
C) Rocks under low surrounding pressure are more
likely to deform ductilely than rocks under high
surrounding pressure.
D) Sedimentary rocks are more deformable than
igneous rocks. |
|
|
Term
The study of the layers in sedimentary rock
is known as |
|
Definition
|
|
Term
the study of time in relation
to the Earth. |
|
Definition
|
|
Term
(fossils, structure, crosscutting
relationships): how old a rock is
compared to surrounding rocks |
|
Definition
|
|
Term
(isotopic, tree rings, etc.):
actual number of years since the rock was
formed |
|
Definition
|
|
Term
in a sequence of
undisturbed layered rocks, the oldest rocks
are on the bottom |
|
Definition
| Principle of Superposition |
|
|
Term
layered
strata are deposited horizontally or nearly
horizontally or nearly parallel to the Earth’s
surface |
|
Definition
| Principle of Original Horizontality |
|
|
Term
sedimentary layers
deposited on older igneous and metamorphic
rocks. |
|
Definition
|
|
Term
younger
sedimentary layers deposited on older, tilted
sedimentary rocks. |
|
Definition
|
|
Term
younger sedimentary layers
deposited on older, horizontal sedimentary
layers |
|
Definition
|
|
Term
Which of the following is the best statement
of the principle of original horizontality? |
|
Definition
| Sediments are deposited as horizontal layers. |
|
|
Term
number of years that has elapsed
between the event and the present day. |
|
Definition
|
|
Term
The half-life of a radioactive isotope is
______________. |
|
Definition
the time it takes for half of the radioactive
atoms to decay |
|
|
Term
Radiometric dating is possible if a rock
contains a measurable amount of
___________. |
|
Definition
| both daughter and parent atoms |
|
|
Term
Solidified magma that
floated up from the mantle |
|
Definition
|
|
Term
|
Definition
occurs when particles
settle out or precipitate |
|
|
Term
causes
lithification of the
sediment, making
sedimentary rocks. |
|
Definition
|
|
Term
|
Definition
|
|
Term
| What is limestone made of? |
|
Definition
|
|
Term
change affected by pressure,
heat, and water that results in a more compact
and more highly crystalline condition |
|
Definition
|
|
Term
rock that has undergone
changes in texture, mineralogical, or/and
chemical composition in the solid state |
|
Definition
|
|
Term
mineral changes that take place
during an increase in temperature |
|
Definition
|
|
Term
mineral changes that take place
during a decrease in temperature |
|
Definition
|
|
Term
migmatic--What type of metamorphism is caused by
igneous intrusions? |
|
Definition
|
|
Term
| What determines whether a rock deforms in a brittle fashion versus a ductile fashion? |
|
Definition
Temperature, rate of deformation, and rock
type |
|
|
Term
Which of the following is used by geologists to
determine the relative ages in a rock sequence? |
|
Definition
Cross-cutting relations
B. Fossils
C. Stratigraphy |
|
|
Term
Which of the following statements about rock
deformation is false? |
|
Definition
A) Deep crustal rocks are more likely to deform ductilely than
shallow crustal rocks.
B) Hotter rocks are more likely to deform ductilely than cooler
rocks.
C) Most sedimentary rocks are more deformable than igneous
rocks
D) Rocks under low surrounding pressure are more likely to
deform ductilely than rocks under high surrounding
pressure. |
|
|
Term
|
Definition
|
|
