火山,一直都是人们想一探究竟却又望而生畏的存在,被火山灰掩埋的庞贝古城,因火山喷发而消逝的生命,在火山口蓬勃生长的植被……火山是一种常见的地质现象。火山并非是会喷出“火”的山,它喷出的是一种高温粘稠的物质,这种物质叫岩浆。岩浆等喷出物在短时间内从火山口向地表释放,加之上覆岩层的 Volcanoes have long been a dwelling of people trying to find out, the ancient city of Pompeii buried in volcanic ash, the lives that have ebbed away as a result of volcanic eruptions, the vegetation that thrives in the crater ... Volcanoes are a common geological phenomenon. The volcano is not a mountain that emits “fire”, it emits a high-temperature sticky substance called magma. Magma and other discharges in a short period of time from the crater to the surface release, coupled with overlying strata