VOLCANOES | Last Minute Revision | Leaving Cert Geography

[@auiqx]

This channel is so underrated?? you're literally my saving grace for my leaving!

[@Cara-sb2fs]

Ya man me too I’m so screwed for maths too

[@lyxeezx4979]

as a 5th year this video is great, my teacher never explains anything so well

[@lav5035]

is not teaching properly really common with 5th year geo teachers??

[@urmum11072]

⁠no why cant any lc geo teacher teach

[@laurae7777]

Fissure eruptions
Giants Causeway Antrim Derry Plateau
Basic >55% silica
50m thick
50k spread
15yrs successive eruptions
Basalt (60k hexagonal columns)
Weathering -> laterite soil
African + Eurasian divergent
Antrim pushed eastwards
Volcanic plug slemish Antrim
Constructive plate boundaries
Kilimanjaro East African Rift Valley
Hotspot.
Volcanic chain
Hotspot point fixed
Convention currents
Extinct
Hawaii (youngest)
Shield volcano
Mauna Loa 180km wide
Basic eruption
Largest
Gradual
Successive basic lava flows
Low viscosity
Composite/strata
Mt Fuji Japan
Steep sided
Conical
Acidic lava
Layers of tephra & volcanic ash
Caldera
Crater lake Oregan
Violent eruption
Composite volcanoes
Huge volume lava removed
Magma chamber collapse
Resurgent cone
Geysers
Hot water at great force
Pressure builds as water boils
Old Faithful Yellowstone park
Smokers
Mid Atlantic ridge
Chimney vent
Depths below 3k
Minerals like sulphur
plutonic features
Batholith.
Large mass intrusive igneous rock
Solidified cooled Base of mountain
Leinster Batholith
400mya
Eurasian North American
Destructive
Sedimentary rock buckled
Fold mountains
Metamorphic slate & quartzite
Weathering and erosion reveals underlying granite
Peak of sugarloaf Wicklow mountains
15kkm2
Dike
Vertical
Sill
Horizontal
Laccolith
Upwards
Dome shaped
Lopolith
Inverted dome
Geothermal energy

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Thanks

[@michaelculhane680]

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