This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.30909/vol.04.02.203225. This is version 2 of this Preprint.
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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 characterisation of basaltic sill segments and their associated host rock deformation from the Little Minch Sill Complex, Isle of Skye, UK. Each separate host lithology shows multiple tip geometries and styles of host rock deformation, from elastic-brittle fracture to viscous indentation and fluidisation. We attribute this range of host rock deformations to evolving conditions that occured at the tips both during sheet growth and arrest.
DOI
https://doi.org/10.31223/X5SW28
Subjects
Earth Sciences, Geology, Volcanology
Keywords
deformation, sheet intrusion
Dates
Published: 2020-11-03 07:46
Last Updated: 2021-12-15 20:58
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License
CC BY Attribution 4.0 International
Additional Metadata
Conflict of interest statement:
None
Data Availability (Reason not available):
Data & supplemental files are available on request
There are no comments or no comments have been made public for this article.