GEOLOGY

Detailed explanation-1: -Answer. When ash, cinders and bombs build up in a steep pile around a volcano’s vent, the result is a composite volcano.

Detailed explanation-2: -A cinder cone is a steep, cone-shaped hill or small mountain. It forms when a volcano erupts explosively. Ashes, cinders, and bombs pile up around the vent. The tephra (rock pieces) are held together very loosely.

Detailed explanation-3: -Composite volcanoes are tall, symetrically shaped, with steep sides, sometimes rising 10, 000 feet high. They are built of alternating layers of lava flows, volcanic ash, and cinders. Famous composite volcanoes include Mount Fuji in Japan, Mount Shasta and Mount Lassen in California, Mount St.

Detailed explanation-4: -Cinder cones are small volcanoes that consist of volcanic ash, cinders, and other types of tephra that has piled up around a vent. Cinder cones are typically built in a single eruptive period that lasts a few months and that may include the eruption of fluid lava flows from vents located along the base.

Detailed explanation-5: -Cinder cones As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings.