pollution caused by volcanic eruptions
Background. A volcanic eruption is caused by the ascent of molten rock from the mantle through the asnethophere up to Earthâs crust. Figure 1 is a diagram of a volcanic eruption event; it illustrates all the processes and byproducts that occur during an eruption event (USGS, 2010).uring a volcanic eruption a mixture of gases and particulates are expelled. The discharge of gases can also occur between major eruption events; volatile gases such as hydrogen fluorine(HF) and carbon monoxide(CO) trickle out of cracks and fissure along the surface of the volcano (SDSU, 2000).