A stratovolcano is made of layers of tephra and lava. Stratovolcanoes are steep-sided and composed of alternating layers of volcanic ash, tephra, hardened lava flows, and other volcanic materials.
The three primary forms of subaerial volcanoes are stratovolcanoes, shield volcanoes, and cinder cone volcanoes. Stratovolcanoes are characterized by alternating layers of tephra and solidified lava due to their explosive eruptions and lava flows. Shield volcanoes have gentle slopes formed from successive lava flows with occasional tephra layers. Cinder cone volcanoes are small, steep-sided volcanoes made up almost entirely of tephra fragments from explosive eruptions.
The different layers of a volcano are made from the lava and ash produced by the volcano. Some volcanoes have different thicknesses of layers or only one type of layer depending on the kind of eruption and how much ash it produces.
cinder cone volcano
In a cinder cone volcano, layers of ejected lava are combined with "pyroclastic" layers, formed of "tephra" : hot gas and rock that flow from the cone. The classic volcanic cones are composed of several parts : * Cone - the mound of ash and cinder * Crater * - the main opening, usually at the peak or summit * Vents - openings from the cone * Conduits - the lava channels connected to the vents * Magma chamber - the underground source of the liquid rock for the volcano *A "caldera" is a collapsed area, usually formed when a magma chamber empties. This is distinct from the term crater.
Shield volcano
composite volcanoes
composite volcanoes
alternating layers of lava and tephra
The Composite volcano.
The composite volcano.
No. First of all, heat is not a substance. Something cannot be made of heat. Igneous rock forms from lava, magma, or tephra that has colled. Magma is molten rock in the earth's interior. Lava is molten rock that has been erupted onto the surface by a volcano. Tephra is material that has been ejected into the air by a volcano.
A volcano whose cone is made up of alternate layers of ash and lava.
The three primary forms of subaerial volcanoes are stratovolcanoes, shield volcanoes, and cinder cone volcanoes. Stratovolcanoes are characterized by alternating layers of tephra and solidified lava due to their explosive eruptions and lava flows. Shield volcanoes have gentle slopes formed from successive lava flows with occasional tephra layers. Cinder cone volcanoes are small, steep-sided volcanoes made up almost entirely of tephra fragments from explosive eruptions.
The different layers of a volcano are made from the lava and ash produced by the volcano. Some volcanoes have different thicknesses of layers or only one type of layer depending on the kind of eruption and how much ash it produces.
cinder cone volcano
In a cinder cone volcano, layers of ejected lava are combined with "pyroclastic" layers, formed of "tephra" : hot gas and rock that flow from the cone. The classic volcanic cones are composed of several parts : * Cone - the mound of ash and cinder * Crater * - the main opening, usually at the peak or summit * Vents - openings from the cone * Conduits - the lava channels connected to the vents * Magma chamber - the underground source of the liquid rock for the volcano *A "caldera" is a collapsed area, usually formed when a magma chamber empties. This is distinct from the term crater.
Shield volcano