GEOLOGY

Detailed explanation-1: -Yes, lapilli is a pyroclastic material. Pyroclastic material consists of volcanic fragments, rock, ash, or vapor released during a volcanic eruption. Lapilli is the volcanic fragment that is released during a volcanic eruption. They are small rocks that are formed from cooled lava.

Detailed explanation-2: -Lapilli: A pyroclast with a mean diameter between 2 and 64 mm ( 0.08 and 2.5 inches). Block: A pyroclast with a diameter greater than 64 mm (2.5 inches) and that has an angular shape. Blocks are solid during eruption and transport.

Detailed explanation-3: -Lapilli: Rock fragments between 2 and 64 mm (0.08-2.5 in) in diameter that were ejected from a volcano during an explosive eruption are called lapilli. Lapilli (singular: lapillus) means “little stones” in Italian. Lapilli may consist of many different types of tephra, including scoria, pumice, and reticulite.

Detailed explanation-4: -lapillus, plural Lapilli, unconsolidated volcanic fragment with a diameter between 4 and 32 mm (0.16 and 1.26 inches) that was ejected during a volcanic explosion. Lapilli may consist of fresh magma, solid magma from a prior eruption, or basement rocks through which the eruption passed.