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Flashcards in lab final Deck (35):
1

what are rise + run, and how do we use them to find slope?

be able to calculate a slope from info or from a map

2

know the ridge to trench model for plate tectonics

be able to label it

3

how did Peter Bird figure out that the Earth wasn't changing size?

The percentage of divergent and convergent boundaries are the same, so crust is being created and destroyed at the same rate.. Therefore, it is staying the same size

4

what are the three unconformities

nonconformity

disconformity

angular unconformity

5

hydrothermal metamorphism _____

alters rocks, and then as they travel away, they become (OCD) older, colder and denser BEFORE going to oceanic lithosphere

6

know the glacial diagram

be able to label it

7

alluvial fans

arrid setting

pattern of streams= braided

vegetation around margin

drill close to the margin

saltflats, maybe- plya lakes

8

basin

circular, YOUNGEST in the middle

T's pointed outward, away from the circle

9

dome

circular, OLDEST in the middle

T's pointed inward, towards circle

10

syncline

arrows pointing downward

11

anticline

arrows pointing upward

12

know how to do the time series plots

latitude and longitude

when plotting the graph make LONGER lines, not short

longitude- left to right

latitude- top to bottom

13

what are the driving forces of plate tectonics?

compression, tension, shear

ridge push, slab pull, mantle convection currents

14

two issues with carsed areas

water contamination

hardwater

15

compression

compacts a block of rock and squeezes it into less space

can cause reverse faulting (aka thrust faulting) where the hanging wall block is forced up the footwall in opposition to the pull of gravity

16

tension

pulls a block of rock apart and increases its length

can cause normal faulting, where gravity pulls the hanging wall block down and forces it to slide down off the footwall block

17

shear

offsets a block of rock from side to side

may eventually tear it apart into two blocks of rock that slide past each other along a lateral or strike-slip fault

18

ridge push

gravity driven force that results from the elevated position of the ridge

19

slab pull

results from the sinking of a cold, dense, slab of oceanic lithosphere

is the major driving force of plate motion

20

mantle convection currents

mantle drag resists plate subduction convection in the mantle

enhances plate motion when the velocity of the atmosphere exceeds that of the overlying plate

21

which stream setting is most likely to have rock falls and slides?

upland streams 

flashfloods are associated with upland streams

22

syncline plunge T lines

T's pointing INWARD

23

anticline plunge T lines

T's pointing OUTWARD

24

what stream setting is indicated by having soil failures as the dominant geologic hazard?

transitional midland

25

give some examples of soil failure

slump

Earthflow

creep

26

oceanic setting density

3.0 g/cm ^3

27

continental setting density

2.8 g/cm ^3

28

mantle setting density

3.3 g/ cm^3

29

lowland stream

oxbow lakes?

broad meanders?

ridge + swole?

yazoo tributary?

30

Q image thumb

angular unconformity

 

BE ABLE TO DRAW THIS

31

Q image thumb

disconformity

 

BE ABLE TO DRAW THIS

32

Q image thumb

nonconformity

 

BE ABLE TO DRAW THIS

33

Q image thumb

---> compression ---> reverse faults

34

Q image thumb

---> tension ---> normal faults

35

Q image thumb

----> shear stress ---> strike-slip faults