vulkanizam - university of belgrade › wp-content › uploads › vulkanizam-2014.pdf ·...
TRANSCRIPT
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VULKANIZAM
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Plutonske stene
Vulkanske stene
Subaerski vulkanizam
Submarinski vulkanizam
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ŠEMATSKI PRIKAZ VULKANA
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Fizičke i hemijske osobine magme i lave
10% lakoisparljive komponente
H2O, CO2, H2S, HCl, HF
90%teškoisparljive komponente
SiO2, Al2O3, FeO, MgO, CaO...
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Temperatura lave 900-14000 C
Spoljašnji (hidrostatički)
UnutrašnjiPritisak
Viskozitet – otpor prema tečenju
Kisele magme (veći viskozitet) Bazične magme (manji viskozitet)
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LAVIČNI TIPERUPCIJE
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KILAUEA
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EKSPLOZIVNI TIP ERUPCIJE
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KRAKATAU
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KRAKATAU
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МЕШОВИТИ ТИП ЕРУПЦИЈЕ
Vezuv
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Pompeji
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Pompeji
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CENTRALNI VULKANIPOPOKATEPETL
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CENTRALNI VULKANIKILIMANDŽARO
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CENTRALNI VULKANI PARIKUTAN
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LINEARNI VULKANIJAVA
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LINEARNI VULKANILAKI
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LINEARNI VULKANILAKI
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AREALNI VULKANI DEKAN
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POSTVULKANSKE POJAVE
FUMAROLESOLFATARE
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GEJZIRIGejzir
Topli izvor
Magmatski rezervoar
Toplota
Zagrejana voda
Porozne stene
FumaroleStrokur (Island)
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Srednjookeanski grebenVatreni pojas Pacifika
Ostrvski luk
Aleutska ostrvaJapan (Fujiyama)
Marijanska ostrva
Filipini (Pinatubo)
Indonezija (Krakatau)
Vulkanski luk
Andi
Sv. Jelena
Rift
Istočnoafrički rift
Vruća tačka
Island
Havaji
Yellowstone
Galapagos
Srednjookeanski greben
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Vruće tačke “Hot spots”
Litosfera
OmotačKapljice magmi
Spoljašnje jezgro
Unutr. jezgro
Hot spot
Havajska ostrva
Okeanska litosfera