earth science

30 flashcardsby JullianeE
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1
according to Wegner, continent onece joined together in one large Pangaea
continental drift theory
2
continent seem fit
topographic
3
mountain that appears coastline also appear in other continent
rock types
4
fossils appear in other continent
fossils correlation
5
spread, shrinking, of a gas (heat)
convection current
6
place close to the edge of lithospheric plates
plate boundaries
7
colliding 2 plates
convergent
8
denser, 1 continent & 1 oceanic
subduction zone
9
hole, 1 continent & 1 oceanic
deep sea trench
10
2 continent
mountain
11
2 oceanic
the volcanic island chains
12
2 tectonic plates move separately
divergent
13
move up & down in different directions
transform
14
crust deform along the tectonic plate margins
deformation
15
pulling appart
tensional
16
pushes together
compressional
17
pushed in opposite directions
shear
18
each rock types deformed differently when stress is gradually applied (runber band)
elastic deformation
19
bend in rock
fold
20
convex up fold in rock
anticline
21
rocks layer where warped down
syncline
22
slight bend
monocline
23
break in rock
fault
24
tensional forces act in opposite directions, sometimes called "gravity fault"
normal fault
25
develop when compression exist
reverse fault
26
produced when tensional stress result in the subsidence of a block
graben fault
27
the development of two reverse fault causing a block of rock to be pushed. (up faulted)
horst fault
28
are vertical in nature and are produced where the stresses are exerted parallel to each other (horizontally motion)
strike- slip fault
29
special kind of strike-slip fault that cuts through the lithosphere and accommodate motion between 2 large crystal
transform fault
30
combination of horizontal& vertical motion, mixed in slip type
oblique-slip fault
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