Volcano and Bathymetric Map

8/13/2019 Volcano and Bathymetric Map

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What is a volcano?

A volcanois a site where melted rock and other

materials from arth!s mantle are released"

#$ring an er$ption% melted rock called magma

leaves the magma cham&erand moves $p the

conduit" 'he magma leaves the cond$it at the

vent"

Magma is called lavaafter it leaves the vent"


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vent$ally the er$ption

ends and the volcano

vent &ecomes a &owl-

like calderaor

res$rgent domeor lava

lake"

(es$rgent dome

Cinder Cone

Lake


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A volcanic neckis the solid remains

of magma that filled the cond$it"

As the volcano erodes% a core of

solid magma gets e)posed"

*raniteis an igneo$srock and is

formed from magma"

#evil!s 'ower at Wyoming'he granite peaks in Chile

http+,,www"landforms"e$


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'he top of an active mantle pl$me is called a hot

spot"

As the plate moves% it carries the volcanic island

away from the active hot spot"


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awaii!s .slands are Volcanic Chains


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#eterminedirection of

movement

C$rrently% the hot spot is makingthe $ndersea volcano Loihi to

the so$theast of the island"


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Bathymetric Map - A bathymetric mapshows what the ocean floor wo$ld look like if all the water drained o$t


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Obvious Divergent Boundaries -trace over the ridges and rises 0white

areas5"


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Obvious Convergent Boundaries - trace over the trenches"


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Earthquake and

Volcano Data

EQ Magnitude less than 5.0

EQ Magnitude 5.0 to 6.9

EQ Magnitude 7.0 and above

Volcano


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Ma8or 'ectonic 7lates

American

Plate

Eurasian

Plate

Indo-Australian

Plate

Pacific Plate

Eurasian

Plate

Antarctic

Plate

African Plate

NazcaPlate


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What is the direction of motion for the

maor plates!

Held

stationary


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Volcano /ila$ea

in awaii49":4;< north latit$de

4=="2>;< west longit$de"

(ight on top of awaiian ot6pot

6hallow Magma (eservoir Most active volcano on arth

B$t gentle% with V. 3 0Volcanic)plosive .nde)5


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Mo$nt 6t" elen ":@"23 % 422"41 W5

y8af8alla8k$ll Volcano in .celand 0@;"@; degrees

49"@2 degrees W5 - recent er$ption March % 2343 a

relatively small glacier in .celand whose icecap covers an

active volcano some 4%@@@ meters 0=%:@@ feet5 high"


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Mo$nt tna% .taly $ropeDs highest and most

active volcano" located a&ove a s$&d$ction Eone

formed where the $rasian and

African plates collide% which also

prod$ced Ves$vi$s and Campi

Flegrei"

http+,,geology"com,volcanoes,etna,

6$&d$ctoin one

Latit$de+ ;>


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#rakatoa$ %ndonesia

A Volcanic island &etweenIava and 6$matra in

.ndonesia% growing &y 2cm

per day"

)ploded in 411;% killing ;@%:4>

people" Lo$dest so$nd ever heard in

modern history% &eing heardnearly ;%333 miles away" 's$nami over ;33 meters high" 'he sky darkened worldwide for

years" http+,,icecreamgram"&logspot"com,2342,34,krakatoa"html


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&ount 'inatubo in 'hilippine

'he 4994 er$ption prod$ced the second largest terrestrial er$ption of the

23th cent$ry 02nd to the 4942 er$ption of /atmai in the Alaska 5

'he caldera wass$&seJ$ently filled withwater from monsoon rains

and a crater lake was

formed" *lo&al temperat$res

dropped &y a&o$t 3"=


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ovar$pta% Alaska

A new volcano formed in 4992" 'he 4992 V.-@ er$ption lasted @3 ho$rs

long and released ;3 times the vol$me of

magma as the 4913 er$ption of Mo$nt 6t"

elens"

ear&y /atmai has V. ; in 4992"

http+,,en"wikipedia"org,wiki,Mo$ntK/atmai

ovar$pta

/atmai


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(ernandina %sland

the third largest% and yo$ngest%

island of the *alpagos .slands"

'he islands were formed &y the

*alpagos hotspot" 'he island is an active shield

volcano that has &een er$pting

since April 44% 2339"

http+,,en"wikipedia"org,wiki,FernandinaK.sland


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Volcano and Bathymetric Map

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