Magma in mantal is under great heat and high temperature. Once there is a crack or we called a line of weakness appears on crust's surface,magma would escae to the surface from mantal.Volcanic ashes,gases and magma would throw out and causes volcanic eruptions.
Composite Shield Cinder Cone
...because of diz volcanic eruption,many lives will be lost,properties will be destruct...
Vulcanicity is a process through which gaseous, liquid and solid materials are forced out of the earths crust to the earths surface. Volcanicity is the process where igneous materials reaches the earths surface from the earths crust to the earth surface
The volcanic ash is very fertile and can bring a very good harvest. The pyroclastic flow and the lava is very destractive and can caurse a lot of damedge to the serrounding area.
volcanicity is the process where by magma in the interior of the earth crust forced it way out to the earth surface cause by intense pressure in the interior of the crust there by forcing the earth crust to expand and causing a crack which will intend force it self through flowing out to form hard igneous rocks
volcanic eruptions may cause mass extinctions or volcanic haze.a mass extinction is when a large number of species die out over a short period of geologic time and volcanic haze is when the gases of an eruption cause a haze and block out sunshine, causing a mass extinction.
The study of volcanoes is found under Physical Geography. It is taught in the topic Volcanicity. Which is a part of Orogenesis, ie origin of rocks, volcanoes and other landforms of igneous properties.
eruption are caused by magma building up under the earth and then the relesing the pressure whitch causes lava to shoot up into the air, think of a coke bottle it has the same affect
causes of fraternities
The basic processes involves in igneous rock formation are; 1. Melting (Magma, formation of molten substance). 2. Volcanicity (Eruption, movement of magma). 3. Cooling (Change in temperature). 4. Crystallization (Mineralization, formation of crystals and minerals). 5. Solidification (Consolidation into a solid mass to form igneous rock).
causes of magnetic drift causes of magnetic drift causes of magnetic drift
an account of its causes is remembering what it causes but an explanation is what it actually is not what it causes!...i think