Question

Lithified ash (or ash mixed with pyroclastic fragments) forms a volcaniclastic rock called a:________

Answer 1

Lithified ash (or ash mixed with pyroclastic fragments) forms a volcaniclastic rock called a Tuff.

• A form of rock called tuff is created when volcanic ash is blasted from a vent during an eruption.
• The ash is transformed into a rock after ejection and deposition. Tuff is defined as rock with an ash content of more than 75%, whereas tuffaceous refers to rock with an ash content of 25% to 75%.
• The thickness of tuff often decreases with distance from the volcano and is usually greatest close to the volcanic vent. The typical shape of a tuff deposit is that of a "lens," not a "layer."
• Tuff may also be thickest on the vent's side that faces away from the wind or on the side facing the direction of the blast.

learn more about tuff here: brainly.com/question/27870503

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