the viscosity of lava depends to a great degree upon its mineralogy.
2006-07-18 08:09:49 · 4 answers · asked by dat dude 1 in Science & Mathematics ➔ Earth Sciences & Geology
Minerology, and thus composition, do influence morphology. Basaltic lavas (olivine, pyroxene, plagioclase) are usually flat sheild type because of low viscosity. Andesites (pyroxene, plagioclase, amphibole, biotite) have higher viscosity and form stratovolcaoes. Rhyolites (quartz, k-feldspar, muscovite) are the highest viscosity and form domes or nothing (biggest eruptions... just a caldera!)
2006-07-18 08:24:10 · answer #1 · answered by QFL 24-7 6 · 2⤊ 0⤋
yes QFL has covered it it's a bit like a recipe the different ingredients produce diferent results when baked in an oven
2006-07-18 16:59:56 · answer #2 · answered by Kalahari_Surfer 5 · 0⤊ 0⤋
age
2006-07-18 15:15:38 · answer #3 · answered by essentiallysolo 7 · 0⤊ 0⤋
this subject teeters on rocky ground
2006-07-18 17:04:11 · answer #4 · answered by Thomas P 3 · 0⤊ 0⤋