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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.

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14y ago

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What type of ejecta is ash?

it is a type of tephra


What type of volcano is entirely of tephra?

Cinder Cone Volcano


What type of volcano is made of layers of tephra and lava?

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.


What is the name of the largest sized tephra?

Blocks is the name used for the biggest pieces of tephra. Tephra is produced by a volcanic eruption.


What type of tephra is most dangerous to humans?

ash because it gets in our lungs and can give cancer


This type of volcano forms from lava eruptions and tephra deposits forming a towering volcano.?

Composite


This type of volcano forms from tephra eruption?

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.


What volano is made entirely of tephra?

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 or streamlined tephra are called?

Large round tephra are called bombs, while streamlined tephra are known as lapilli.


What is the descridtion of tephra?

Tephra is basically ash, rock, cinders, and solidified lava spurted from a volcano.


Is tephra always silicic?

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.


Can a shield volcano summit tephra?

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.