A Textural Perspective on the Magmatic System and Eruptive Behaviour of Merapi Volcano

Katie Preece, Froukje M. Van der Zwan, Julia Hammer, Ralf Gertisser

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Scopus citations


Quantitative textural analysis of crystals, including their number density, shapes, sizes, overall abundance and size distribution can be used to shed light on magmatic processes and the timescales over which they operate. At Merapi, textural analysis of phenocrysts in dome lavas, lava flows, tephra, and in plutonic cumulates has revealed that open system steady state conditions prevail throughout the crustal magma plumbing system over short time periods, with non-steady state conditions prevailing over the longer term. Phenocryst crystallisation likely takes place over tens to hundreds of years prior to eruption. Quantitative textural analysis of feldspar microlites, in conjunction with compositional data, elucidate magma ascent and degassing processes within the conduit during dome forming eruptions, and additionally reveal the driving forces behind transitions between effusive and explosive eruptive behaviour. For example, microlite textures from different stages of the 2010 eruption show that transitions between explosive and effusive activity in 2010 were driven primarily by the dynamics of magma ascent in the shallow conduit.
Original languageEnglish (US)
Title of host publicationMerapi Volcano
PublisherSpringer International Publishing
Number of pages25
ISBN (Print)9783031150395
StatePublished - Feb 2 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-03-02
Acknowledgements: We gratefully acknowledge our colleagues from the Center of Volcanology and Geological Hazard Mitigation (CVGHM) and from BPPTKG in Yogyakarta for their support of this work in Indonesia. KP and RG extend their special thanks to Biyanto for logistical help in the field. Amelia Bain is thanked for a timely and constructive review, which helped to improve this chapter. This is SOEST publication no. 10992.


Dive into the research topics of 'A Textural Perspective on the Magmatic System and Eruptive Behaviour of Merapi Volcano'. Together they form a unique fingerprint.

Cite this