GENERAL GEOLOGY

Detailed explanation-1: -Pyroclasts may also include individual crystals, crystal fragments, and fragments of volcanic glass. Cinders, ash, and volcanic bombs are all pyroclasts. Pyroclasts are derived from either the magma itself or are plucked as solid pieces from the walls of the conduit, usually near the surface.

Detailed explanation-2: -Pyroclastic flows contain a high-density mix of hot lava blocks, pumice, ash and volcanic gas.

Detailed explanation-3: -Lapilli. Pea to walnut sized pieces of rock that range in size between 2 mm and 64 mm. Lava bombs. Fragments of rock greater than 64 mm in size. Some lava bombs contain gases within the rock that continue to expand after they land. Lava blocks. Pumice. Floating rocks.