Volcano A erupts rocks with SiO2 content ranging from 49% to 52% whereas volcano B, 100km away, erupts materials with SiO2 content of 62-68%. Which statement best characterizes these two volcanos?
A) Volcano A is probably a shield volcano with typically quiescent eruptions, whereas Volcano B is likely a stratovolcano characterized by violent, explosive eruptions.
B) Both volcanos are violent, explosive volcanos that spread ash continent wide.
C) Volcano A is likely to be a supervolcano with violent eruptions, whereas volcano B is probably a shield volcano with quiescent eruptions.
D) Both volcanos are shield type volcanos that are characterized by quiescent eruptions.
A
You might also like to view...
All of the following statements about the sulfur cycle are true except for the following:
A) Sulfur is released into the atmosphere when humans burn coal. B) Unlike nitrogen and carbon, organisms do not require or contain sulfur. C) Most sulfur is found in rocks and minerals. D) A natural source of sulfur in soils is the weathering of rocks.
How would you differentiate between glacial outwash streams and braided streams associated with an alluvial fan?
What will be an ideal response?
The first major transgression onto the craton during the Paleozoic was the Tippecanoe. Indicate whether the statement is true or false
Which of these is commonly an effect of El Niño?
A) A decline in the exotic species of fish and other forms of marine life in the affected waters B) A decrease in ocean surface temperature in the eastern Pacific C) A decrease in rainfall in west coastal countries or states of the American continents D) An often catastrophic decrease in the commercial fisheries in Peru