As magma rises from depth, it forms bubbles by nucleation, followed by diffusion‐
decompressive expansion. Expansion induces shearing, and shearing in turn causes …

Plinian explosive eruptions represent a major volcanic hazard in the Lesser Antilles Arc that
must be carefully assessed based on reconstructions of past activity. The present study …

A lithofacies analysis of the Huichapan ignimbrite has been undertaken to evaluate its
depositional history from large pyroclastic density currents. The Huichapan ignimbrite is a …

Processes responsible for the formation of crater-facies kimberlite remain poorly understood
because there are few occurrences of well-preserved deposits. New open-pit exposures of …

Geochemical analysis is used to investigate fragmentation and physical fractionation in
pyroclastic flows. Bulk analyses of the matrices (< 4mm) and individual size fractions in …

Abstract The Martian regolith breccia Northwest Africa (NWA) 11220 and paired stones
represent the only known meteorites that sample a clastic sub‐surface lithology from Mars …

We present calculations of a simplified two-layer pyroclastic flow model, which incorporates
different physics to represent the dense and dilute regions of column collapse pyroclastic …

Using the fragmentation bomb, we analysed the effects of temperature and pressure drop on
the grain-size characteristics of experimentally produced pyroclasts. Experiments performed …

Since the 1970s, multiple reconstruction techniques have been proposed and are currently
used, to extrapolate and quantify eruptive parameters from sampled tephra fall deposit …

Critical to understanding explosive eruptions is establishing how accurately representative
pyroclasts are of processes during magma vesiculation and fragmentation. Here, we present …