Structures related to the emplacement of shallow-level intrusions

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A systematic view of the vast nomenclature used to describe the structures of shallow level intrusions is presented here. Structures are organised in four main groups, according to logical breaks in the timing of magma emplacement, independent of the scales of features: (1) Intrusion-related structures, formed as the magma is making space and then develops into its intrusion shape; (2) Magmatic flow-related structures, developed as magma moves with suspended crystals that are free to rotate; (3) Solidstate, flow-related structures that formed in portions of the intrusions affected by continuing flow of nearby magma, therefore considered to have a syn-magmatic, nontectonic origin; (4) Thermal and fragmental structures, related to creation of space and impact on host materials. This scheme appears as a rational organisation, helpful in describing and interpreting the large variety of structures observed in shallow-level intrusions.
Original languageEnglish
Title of host publicationPhysical Geology of Shallow Magmatic Systems
ISBN (Print)978-3-319-14084-1
Publication statusPublished - 2018

Publication series

NameAdvances in Volcanology
ISSN (Print)2364-3277


  • Fragmentation
  • Geo-logic
  • Magma intrusion
  • Magma flow
  • Syn-magmatic deformation


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