what is the composition of the first substance mentioned?
The composition of almost all lava of the Earth's crust is dominated by silicate minerals: mostly feldspars, olivine, pyroxenes, amphiboles, micas and quartz.
Lava
The composition of almost all lava of the Earth's crust is dominated by silicate minerals: mostly feldspars, olivine, pyroxenes, amphiboles, micas and quartz.
where is mt. vesuvius located on a map Gulf of Naples in Campania, Italy is this a volcanic mountain or a non-volcanic type? Volcanic when did it last erupt? 1631 what was the evidence to prove that the mountain had erupted in the first century ad? Historians have learned about the eruption from the eyewitness account of Pliny the Younger, a Roman administrator and poet. In the surviving copies of the letters several dates are given. what is the height of this peak? UNANSWERABLE how was this peak formed? Vesuvius was formed as a result of the collision of two tectonic plates, the African and the Eurasian. is there any reason why this peak is prone to volcanoes? It is one of several volcanoes which form the Campanian volcanic arc. Vesuvius consists of a large cone partially encircled by the steep rim of a summit caldera caused by the collapse of an earlier and originally much higher structure. is there a national park located close to this site? The area around Vesuvius was officially declared a national park what are the rocks and minerals found at this peak? Layers of lava, ash, scoria and pumice make up the volcanic peak. Their mineralogy is variable, but generally silica-undersaturated and rich in potassium, with phonolite produced in the more explosive eruptions
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Lava [SEP] Lava composition
The composition of almost all lava of the Earth's crust is dominated by silicate minerals: mostly feldspars, olivine, pyroxenes, amphiboles, micas and quartz.