Difference between block mountain and volcanic mountains
Answers
Answer:
Block mountains are created when large areas or blocks of earth are broken and displaced vertically.
The uplifted blocks are termed as horsts and the lowered blocks are called graben.
The Great African Rift Valley (valley floor is graben), The Rhine Valley and the Vosges mountain in Europe are examples.
Block mountains are also called fault block mountains since they are formed due to faulting as a result of tensile and compressive forces.
Block mountains are surrounded by faults on either side of rift valleys or grabens
A volcanic mountain starts out as a simple crack in the Earth called a volcanic vent. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. This material falls back to Earth around the vent, and piles up around it. Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape.
There are different kinds of volcanic mountains. Cinder cone mountains are made up of material blasted out that rains back down. They don’t usually grow too large. Shield volcanoes are built up by many lava flows of low viscosity lava (low viscosity means that it flows more easily). The lava can flow for dozens of kilometers, and the volcano can be very wide. A stratovolcano or composite volcano is made up of many layers of ash, rock and hardened lava. Some of the largest, most impressive volcanoes in the world are stratovolcanoes (think about Mount Fuji or Rainier).
Block mountain :
Block mountain is a mountain consisting of a block or blocks bounded by normal faults in the earth's crust.
VOLCANIC MOUNTAIN :
Volcanic Mountains are formed when molten rock (magma) deep within the earth, erupts, and piles upon the surface. Magna is called lava when it breaks through the earth's crust. When the ash and lava cools, it builds a cone of rock. ... Examples of volcanic mountains include: Mount St. Helens in North America
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