Plate Tectonics and Earthquake Review

Created by mjahnke 

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Gondwanaland

Early supercontinent made up of Africa, S. America and Antarctica

Laurasia

700my-250my when N. America collided with Eurasia

Lystrosaurus

Lived in Antarctica, India and South Africa and old school land dino / used to prove continental drift

Mesosaurus

Lived in S. America and S. Africa / freshwater reptile / used to prove continental drift

Glossopterus

Found in all Southern continents / used to prove continental drift

Caledonia

Location in Britain where the Mountain chains from long ago were connected

Coal fields in N. America

Climatological proof for the earth not being in a complete ice age

sea floor spreading

created by Harry Hess / driving force for continental drift / evidence of tectonics

paleomagnetism

evidence of tectonics / normal or reverse

earthquake and volcanic activity

tectonics evidence / plate boundaries

oceanic divergent boundary

Age of rock is younger the nearer to the boundary

Deepest trench

Formed with a fast moving oceanic-oceanic convergence

Aleutian Islands

subduction zone / volcanic arc / differing ages

Seismic moment scale

amplitude x area x rock brittleness

MOHO

70 km below surface / seismic wave speed increase / boundary between crust and mantle

Shadow zone

Only surface waves occur

Meteors

An alternative way to study the core

Elastic rebound

H.F. Reid

Rodinia

supercontinent 700 mya

Pangaea

supercontinent 300 mya

Wegener

plate tectonics / continental drift

normal fault

tensional / hanging wall falls

reverse fault

compressional / hanging wall rises

P wave

fastest / body wave / will travel through solid, liquid and gas

S wave

sheer wave / will only travel through solid

scarp

exposed rock from a fault

seismograph

instrument

seismogram

paper

seismometer

field instrument

L wave

love wave / side to side / surface wave

R wave

raleigh wave / circle wave / comes at you / surface wave

Mercalli Scale

I-XII / damage, what people feel

Richter Scale

0-9.9 / magnitude/energy / logarithmic / every one point is 32x more energy

Liquifaction

"quicksand" / ground "liquifies" / buildings sink

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