pyroclastic and andestic lava- diff? GCSE GEO

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username3477548
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#1
Report Thread starter 2 years ago
#1
What's the diff between them?
I've always learned that composite volcanoes have pyroclastic flow and shiels and have andesitic, but CGP says that COMPOSITE ARE ANDESETIC, and SHIELD ARE BASALTIc LAVA.

So im really cofnused. If someone understants this please could you explain it to me. thank you! x
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izaakha
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#2
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#2
Composite Volcanos - Andesitic - it is viscous (sticky), solidifies very quickly

Shield Volcanos - Pyroclastic - it is runny, shallow sides means that it run for a long time before it solidifies.

If you are doing AQA Geography GCSE you do not need to know 'Andesitic and Pyroclastic' - all you need to know is viscous and running - the actual terms will be awarded no more marks.
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izaakha
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#3
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#3
I have attached the slides from my college - I am doing A - Level geography - about volcano types.
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