Dust is less then 0.25 in diameter, ash is larger then dust but less then 2 mm in diameter, and the somewhat larger tephra are called lapilli which are larger than dust but less then 64 mm in diameter.
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.
Blocks is the name used for the biggest pieces of tephra. Tephra is produced by a volcanic eruption.
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A cinder cone volcano forms from tephra eruptions. Tephra consists of volcanic matter like ash, cinders, and volcanic rocks exploded into the air during an eruption, which then settle around the vent to form a steep-sided cone-shaped structure.
Large round tephra are called bombs, while streamlined tephra are known as lapilli.
it is a type of tephra
Cinder Cone Volcano
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.
Blocks is the name used for the biggest pieces of tephra. Tephra is produced by a volcanic eruption.
ash because it gets in our lungs and can give cancer
Composite
A cinder cone volcano forms from tephra eruptions. Tephra consists of volcanic matter like ash, cinders, and volcanic rocks exploded into the air during an eruption, which then settle around the vent to form a steep-sided cone-shaped structure.
A tephra cone volcano, also known as a cinder cone volcano, is made entirely of tephra. Tephra is a term for fragmented material produced by a volcanic eruption, such as ash, cinders, and bombs. Tephra cone volcanoes are typically small in size and have steep slopes due to the build-up of tephra fragments from explosive eruptions.
Large round tephra are called bombs, while streamlined tephra are known as lapilli.
Tephra is basically ash, rock, cinders, and solidified lava spurted from a volcano.
No, tephra is not always silicic. Tephra can be composed of a variety of materials, including silicic, basaltic, andesitic, or rhyolitic compositions, depending on the volcanic eruption that produced it.
Yes, shield volcanoes can sometimes produce tephra during explosive eruptions. However, these eruptions are less common compared to the effusive lava flows that are typically associated with shield volcanoes. Tephra produced by shield volcanoes tends to be finer-grained compared to the tephra from stratovolcanoes.