Fluid basaltic lavas such as rhyolite and dacite typically form thick short lavas namely lava spines, lava domes or coulees.
Pahoehoe Flows.
Pahoehoe flows
Mostly basaltic lavas.
Basaltic lavas are hotter, but less viscous than andesitic lavas.
No. Basaltic lavas are hotter and less viscous than andesitic lavas.
Pahoehoe Flows.
Pahoehoe Flows.
Pahoehoe flows
Mostly basaltic lavas.
Fluid, basaltic lavas
No. Basaltic lavas are hotter and less viscous than andesitic lavas.
Basaltic lavas are hotter, but less viscous than andesitic lavas.
Lava plateaus are formed by highly fluid, basaltic lavas.
rhyolitic mama is associated with explosive volcanism and is ejected (blown out of) a volcano rapidly. Basaltic lavas are released during effusive volcanism that is not explosive, such as hawaii where the lave "flows" into the ocean slowly. Basaltic lavas have a lower silica content as well.
Not necessarily. All pahoehoe is basaltic, but not all basaltic lava is pahoehoe. A'a and scoria are also basaltic.
Oceanic crust is made of basaltic rock. The rocks formed from hotspot volcano lavas are also often basaltic too.
Pillow lava is associated with submarine basaltic eruptions. Although they are usually basaltic, they can have other compositions as well.