Flashcard Set Preview
| Side A | Side B | ||
| 1 |
Divergent boundaries
|
two sides spread apartNorth America and Africa seperate 4 cm a yearyoung crust, some mountains,...
|
|
| 2 |
Convergent boundaries
|
Andes mountains, west coast of south americaindonesia and japanocean crust slides under continenthigh...
|
|
| 3 |
passive boundaries
|
nothing happens
|
|
| 4 |
Evidence for continental drift
|
wegner"jigsaw"distrubution of fossils, matching geological units, paleoclimate records
|
|
| 5 |
understanding the oceans
|
technology developed during WWII expanded knowledge of sea floor - sonar imagingmid ocean ridges
|
|
| 6 |
hess' theory
|
seafloor spreadingoffers mechanism to explain continental driftmagnetic anomalies on sea floor
|
|
| 7 |
basic of earth magnetism
|
similar to simple bar magnet (N/S pole) generated by electrical current related to convection...
|
|
| 8 |
normal fault
|
hanging wall moves downward of footwall
|
|
| 9 |
thrust faults/ reverse faults
|
hanging wall moves upward, sits on top of footwallless than 30 degrees
|
|
| 10 |
strike/slip/lateral faults
|
displacement is horizontal, move in same direction
|
|
| 11 |
orogeny
|
mountain building, happens in all tectonic settingVERTICALl movement of earth's crust that...
|
|
| 12 |
mountains higher that mt. everest cant exist on earth bc...
|
erosionrocks dont have infinite strenght, collape under wieght
|
|
| 13 |
craton
|
mountain belts found within continentlong lived histories with multiple orogenies
|
|
| 14 |
seismic waves
|
energy released when fault ruptures
|
|
| 15 |
s waves
|
secondar, slower tha p waves, side by side motion
|
|
| 16 |
r waves
|
surface waves, cause ground to ripple up and down
|
|
| 17 |
l waves
|
surface waves cause ground to ripple back and forth like snake
|
|
| 18 |
elements
|
any of the more than 100 substances that cannot be seperated into simpler substances, consist...
|
|
| 19 |
mineral
|
inorganic substance, crystal structure, chemical structuresolid naturallly occurring elements
|
|
| 20 |
rock
|
mass of minerals, naturally formed
|
|
| 21 |
4 properties of minerals
|
solid, crystalline structure, naturally occuring from geo. process, defined chemical composition
|
|
| 22 |
crystals
|
highly regular atomic structure, repeating 3 dimensional pattern of atoms
|
|
| 23 |
gemstones
|
pearl or mineral that has been cut and polished, precious or semiprecious stone
|
|
| 24 |
not minerals
|
pearl, opal, fossils, wood
|
|
| 25 |
asbestos
|
talc, grind up fibers, insulator, causes cancer
|
|
| 26 |
mercury
|
dimentia, mercury poisoning
|
|
| 27 |
mafic
|
dark rocks, mantle
|
|
| 28 |
silicic
|
lighter colored rocks1. subduction zones2. crystalization3. blobbing up through crust
|
|
| 29 |
aphanitic
|
cant see crystals
|
|
| 30 |
phaneritic
|
can see crystals
|
|
| 31 |
shield volcano
|
low elevation, very wide, basalt
|
|
| 32 |
cone volcano
|
medium elevation, narros, ash
|
|
| 33 |
strato volcano
|
high massive, ash and lava, explosive
|
|
| 34 |
porphyritic
|
crystals present in fine grained matrix
|
|
| 35 |
tuff
|
hardened ash
|
|
| 36 |
pumise
|
not ash but bubbly rock that forms near volcanic rim
|
No comments yet! Be the first to add a comment below!
Please login to post comments.
After login, we will forward you back to this flashcard.