There are various products from volcanoes not just lava as you may think.
products are:
. volcanic gasses - from the volcanoes these include sulphur and co2
. lava flows
. pyroclastic materials- this happens when magma is forcefully or explosively ejected into the atmosphere as particles called pyroclasts . these include ash blocks of magma and lapilli which are beetween 2mm and 64mm
where do you find pyroclasts?
distabution by grain size - bombs and blocks of rock close to volcanoes and ash further away
distrabution by wind - the prevaling wind means the products of a volcanoe are mostly in that direction
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