Pyroclastic deposits are defined as accumulations of volcanic materials formed by the explosive fragmentation of magma during eruptions, which can be emplaced rapidly over large areas. …

Nov 13, 1985 · Pyroclastic flows have a relatively dense basal avalanche that exhibits laminar flow and an overriding, expanding turbulent ash and steam cloud. Ash from the basal …

Ash flow refers to fast-moving torrents of ash, pumice, and gas produced during volcanic eruptions, particularly from the collapse of a plinian eruption column, resulting in pyroclastic …

Sep 1, 2021 · The broad definition of the term ignimbrite adopted in this paper conforms with previous authoritative literature on pyroclastic flow deposits (e.g. Sparks et al., 1973; Cas and …

Mar 16, 2013 · PDC, or pyroclastic density current, is defined as a fast-moving flow of hot gas and volcanic matter that can exert dynamic pressure on structures, potentially leading to their …

Pyroclastic fall deposits form during explosive eruptions by the sedimentation of pyroclasts through the atmosphere from an eruption jet and/or plume. They are the simplest of pyroclastic …

The deposits of pyroclastic flows generated by lava dome collapse are often referred to as block-and-ash flow deposits, because they typically comprise dense blocks of fragmented lava in an …

Consequently, the base of the deposit is enriched in coarser and denser particles. Identification of primary volcaniclastic turbidites requires a clear link between the deposit and a syn-eruptive …

Pyroclastic materials refer to volcanic products ejected during explosive eruptions, including pyroclastic density currents, ballistic bombs, scoria, and tephra fallout. These materials are …

Nov 4, 1997 · Plinian eruptions can also generate pyroclastic flows reaching speeds of 700 km h − 1 (Shea et al., 2011). Pyroclastic flows have been known to travel hundreds of kilometers …