What were the causes of eyjafjallajokull eruption?

Answer 1

The eruption was most likely caused by the shifting of the north American plate & the European plate away from each other as they naturally do due to the convection currents under the earths mantle as they grow apart something needs to occur to plug the gap now often this is just lava seeps up from bellow ground where it is called magma & plugs the gap sometimes there is an eruption that happens this is usually characteristic of an earthquake happening before the eruption.

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More accurately, although Europe and North America are drifting apart, they are because the Atlantic Ocean is widening across a constructive plate boundary. Iceland is part of the volcanic Mid-Atlantic Ridge forming along that fracture.

I'm not sure what the last few clauses mean. Volcanic eruptions are often preceded by minor tremors as the magma approaches the surface and inflates the volcano. (Lava is erupted magma.)

Answer 2

The eruption of Eyjafjallajökull in 2010 was caused by a combination of factors, including the melting of ice due to magma intrusion, the interaction of magma with water, and the release of volcanic gases. These factors led to an explosive eruption that produced ash clouds which disrupted air travel in Europe.