Opin vísindi

Standardized analysis of juvenile pyroclasts in comparative studies of primary magma fragmentation; 1. Overview and workflow

Standardized analysis of juvenile pyroclasts in comparative studies of primary magma fragmentation; 1. Overview and workflow


Title: Standardized analysis of juvenile pyroclasts in comparative studies of primary magma fragmentation; 1. Overview and workflow
Author: Ross, Pierre-Simon
Dürig, Tobias
Comida, Pier Paolo   orcid.org/0000-0003-3437-8581
Lefebvre, Nathalie
White, James D. L.
Andronico, Daniele
Thivet, Simon
Eychenne, Julia
Gurioli, Lucia
Dürig, Tobias
Date: 2021-12-27
Language: English
Scope: 13
University/Institute: Háskóli Íslands
University of Iceland
School: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Jarðvísindastofnun (HÍ)
Institute of Earth Sciences (UI)
Series: Bulletin of Volcanology;84(1)
ISSN: 0258-8900
1432-0819
DOI: 10.1007/s00445-021-01516-6
Subject: Geochemistry and Petrology; particle shape analysis; volcanology; morphometry; volcanic ash; Jarðefnaeldsneyti; Eldfjallafræði
URI: https://hdl.handle.net/20.500.11815/2842

Show full item record

Citation:

Ross, PS., Dürig, T., Comida, P.P. et al. Standardized analysis of juvenile pyroclasts in comparative studies of primary magma fragmentation; 1. Overview and workflow. Bull Volcanol 84, 13 (2022). https://doi.org/10.1007/s00445-021-01516-6

Abstract:

Juvenile pyroclasts, especially in the ash size range, provide important information on primary fragmentation processes, i.e., initial explosive magma fragmentation, and on the state of the magma both prior to and at the point of fragmentation and quenching. There exists an extensive body of literature focusing on the quantification of juvenile particle morphology (shape), internal textures, and surface features spanning several decades; however, a standardized method has yet to emerge for comparative studies. No community-wide consensus currently exists (i) regarding the most representative size fraction(s) to be examined, (ii) on sample preparation procedures (such as whether to use whole-particle silhouettes or 2D cross-sections), (iii) on imaging techniques and image acquisition parameters, or (iv) on the optimal morphometric parameters to measure. Lack of a standardized method precludes robust comparison between different studies and laboratories. We propose here a preliminary “best practices” and workflow for characterization of juvenile pyroclasts, for comparative studies of primary fragmentation. If the community follows such a standardized method, it will become possible to accumulate a large volume of consistent data on juvenile pyroclasts from a range of eruption styles, fragmentation mechanisms, and magma compositions. This will ultimately allow deeper insights into the full panoply of magma-to-pyroclast processes that drive particle-producing volcanic eruptions. One or more “fragmentation diagrams” may eventually be developed to allow different types of magmatic and phreatomagmatic explosive eruptions to be distinguished based on their products.

Description:

Pre-print version (óritrýnt handrit)

Files in this item

This item appears in the following Collection(s)