| Secondary pyroclastic flow deposits are locally exposed, generally infilling palaeochannels with no lateral continuity, and commonly overlying blast deposits. |
| It claims its massive investment in grassroots outreach will shield it against the expected pyroclastic flow of negative advertising. |
| The fluid nature of a pyroclastic flow is maintained by the turbulence of its internal gases. |
| The pyroclastic deposits mainly consist of block-and-ash, blast, tephra fallout and secondary pyroclastic flow deposits. |
| Major valleys cutting the volcano's flanks have been partly or completely filled in by pyroclastic flow deposits and lahars. |
| Risk is an indication of the possible impact of a particular hazard, a lava flow or pyroclastic flow for example. |
