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lava
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Esempi
They include lavas and volcaniclastic rocks of basaltic and andesitic composition together with cogenetic gabbros, plagiogranites and granites.
The volcanic pile built up above sea level so that lavas began to be erupted subaerially.
By contrast, lavas emitted by Hawaiian volcanoes can flow for upwards of miles - they flow like rivers.
For volcanic rocks which cool from molten lavas , this would seem to be a reasonable assumption.
Near-continuous volcanism has been occurring for at least the past 30 million years and continues to produce a wide variety of alkaline lavas and other volcanic products.
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