GlgY 379 Midterm Review PDF

GLGY 379 MIDTERM REVIEW prelude , interludes 3 402224282432262a CHAPTER 2 - PLATE TECTONICS Alfred W...

GLGY 379 MIDTERM REVIEW prelude , interludes 3 402224282432262a CHAPTER 2 - PLATE TECTONICS Alfred Wegener > - German meteorologist > - introduced the hypotrasis front all the continents to used be one Supercontinuet (Pange) TECTONICS > Outer shell of the earth (lithospree) has Go plates that more with each other MOVING -> CONTINENTAL DRIFT > Supercontinent breaking up and drifting CONTINENTS apart - & SEA SPREADING FLOOR > new when sea floors form they and more away in between from each other continents them apart - rises magma posses & SUBDUCTION ( old ocean floor bends and goes back inside the earth when continents more toward eachother S plate get a heavy surie adips and and then is posted order > - coast lines 1other put and they fit together PAST GLACIATIONS -o evidence of glaciers in certain parts of the world then moved proce ↳ STRIATIONS > - scratches on word from grains at sediments of sticking out a glacia- > TIL- > Deposit left behind when ice welts rediment says large covered > - a re a mal in glaciers during i ce age CLIMATEI We can look at what materials a race comprise BELTS of to its Climate determine past. > - swamps jongles -> plant material forms into coal when (tropical regions) burned deeply > - swallow seas > large leefs develop Stropical regions) > - subtropical regions > contains deserts on both sides of tropical belt  > forms dunes from > - salt accumulates evaporated sea water Fossils af found DISTRIBUTION - > the sure knd-dwelling species we re OF FOSSILS in different continents separated by water (THEY Can't Swim : ] - > - continents must have split GEOLOGIC Y You can watch rock assemblages and mountain belts UNITS 1 between coast lives two match different continents > - rocks in theroast lives metah too SEAFLOOR- > BATHMETRIC > - Cross-section that shows seafloor depth PROFILE line along a * Earth quakes to get Do multiple times bathymetric > - trace the outline map of mid-ocean ridges of sea floor fur - its transform ↳ fines the sea floor and deep son treneres > Mid-ocean - > Abbassad treach - flat reyonce of sea RIDGES ↑ LAI S floor ↳ -w mountains at Lear e & 2-2 r > - - U 5km below sea level. 5 Em level) -below sea Last of mountain > RIDGE - 1x 8 floor is (WHERE IT'S MADE) > where the youngest oceanic > DEEP floor deep or deeper < - SEA is 5km TRENCHES Border volcanic. 1 arcs - - of - all a re capable > Fracture > cuts erupting through mid orean midges - ZoNES > - rightangle to thee idocent midge 1 continuity of the interrupt ridge - axis j7 Ridge Axis -Face e ~ SEAMOUNT > underwater mountains I that a re inactive volcanoes CHAINS  > - occurs in chains > - island at one end can still erupt MAGNETIC POLES > - EARTHS - from the flow of curtims Liquid outen more FIEL TD I has i ro n which conduct s MAGNETL > - magnetic do not match recorded in poces geographic poles I Nor rich nods(basalts)& > magnetic have moved around ↳ - poses > - magnetic pole flips direction Apparent polar ↳ NORMAL > like today wondering - - POLARITY path > REVERED opposite - - - POLARITY magnetic feilds positive EARTH SEA FLOOR > > ↓match - - AnomILY ↓ t ↓ = doumt a += > - NEGE- ↳ PosITVE - adds to earth · MAGNETIC ANOMAc) Negative subtracts from stripes along - AnomALY aren-floor earths Care mirrored and across orean earths surface Midge) Angle between > magnetic field - lives INCLINATION more divection of 3 > compasses in - I magnetic field which is either away or ↓ Howplatenel towards eath over time arrented I > HOT MAGMA = magnetic dipoles a re randomly both have [