Segment tip geometry of sheet intrusions, II: Field observations of tip geometries and a model for evolving emplacement mechanisms

Tara L. Stephens*, Richard J. Walker, David Healy, Alodie Bubeck

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Igneous sheet intrusions are segmented across several orders of magnitude, with segment tip geometry commonly considered indicative of the propagation mechanism (brittle or non-brittle). Proposed propagation mechanisms are inferred to represent host rock mechanical properties during initial magma emplacement; typically, these models do not account for segment sets that show a range of tip geometries within the same lithology. We present a detailed structural characterization of basaltic sill segments and their associated host rock deformation from the Little Minch Sill Complex, Isle of Skye, UK, and a broader comparison with segment geometrie... more

Original languageEnglish
JournalEarthArXiv
DOIs
Publication statusE-pub ahead of print - 3 Nov 2020

Keywords

  • deformation
  • sheet intrusion

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