Journal ArticleDOI
New insights into the cone sheet structure of the Cuillin Complex, Isle of Skye, Scotland
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In this paper, structural data were collected on 1100 cone sheets and dykes with the aim of reconstructing the geometry of the complex, recognizing emplacement phases, and contributing to understanding this classical area and the evolution of cone sheets in general.Abstract:
Structural data were collected on 1100 cone sheets and dykes with the aim of reconstructing the geometry of the complex, recognizing emplacement phases, and contributing to understanding this classical area and the evolution of cone sheets in general. Mean sheet dip angles are 40°, 43°, 47° and 50° in four sections transecting the complex. Sheet thickness ranges from a few centimetres to 5 m, with a dominant thickness ofread more
Citations
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Structure of volcano plumbing systems: A review of multi-parametric effects
TL;DR: In this paper, the authors present an overview of plume systems imaged at different depths and geodynamic settings, in order to contribute to assessing the factors that control their geometry.
Journal Article
Dynamics of dikes versus cone sheets in volcanic systems
TL;DR: This article presented scaled laboratory experiments that reproduced dike and cone sheet intrusion geometries under controlled conditions, using Coulomb crystalline silica flour as the model rock and a molten vegetable oil injected at constant flow rate.
Journal ArticleDOI
Dynamics of dikes versus cone sheets in volcanic systems
TL;DR: In this article, the authors present scaled laboratory experiments that reproduce dikes and cone sheets under controlled conditions, and they show that their formation is governed by a dimensionless ratio (Π1) which describes the geometry of the magma source, and a dynamic dimensionless ratios (α, β) which compares the viscous stresses in the flowing magma to the host rock strength.
Journal ArticleDOI
An alternative emplacement model for the classic Ardnamurchan cone sheet swarm, NW Scotland, involving lateral magma supply via regional dykes
TL;DR: In this paper, the authors studied the emplacement dynamics of cone sheets, through studying magma flow, and their importance in volcanic edifice construction, in the Ardnamurchan cone sheets.
Journal ArticleDOI
Structural control on volcanoes and magma paths from local- to orogen-scale: The central Andes case
TL;DR: In this article, the authors analyzed the distribution of 1518 monogenic and polygenic volcanoes of Miocene-Quaternary age of the Central Volcanic Zone of the Andes (Chile-Bolivia-Argentina), and reconstruct the magma paths at 315 edifices by analyzing the morphostructural characteristics of craters and cones.
References
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Journal ArticleDOI
How local stresses control magma-chamber ruptures, dyke injections, and eruptions in composite volcanoes
TL;DR: In this paper, a review of analytical and numerical models of local stresses around magma chambers, as well as analytical models and numerical examples of dyke-injection and eruption frequencies are presented.
Journal ArticleDOI
IX.—The Dynamics of the Formation of Cone-sheets, Ring-dykes, and Caldron-subsidences
TL;DR: A system of intrusions of the type now known as cone-sheets was first definitely recognized and mapped by Harker in the Cuillin district of Skye, and was described by him in the Geological Survey memoir issued in 1904 as discussed by the authors.
Book
Tertiary and post-tertiary geology of Mull, Loch Aline, and Oban
E. B. Bailey,E. M. Anderson +1 more
Journal ArticleDOI
Volcano instability: a review of contemporary themes
TL;DR: The potential scale of structural failures and associated eruptive activity has major implications for the development of monitoring and hazard mitigation strategies at susceptible volcanoes, which must now address the possibility of future collapse events which may be ten times greater than that which occurred at Mount St Helens in 1980.
Journal ArticleDOI
Emplacement and arrest of sheets and dykes in central volcanoes
TL;DR: In this article, two principal mechanisms are proposed to explain the arrest of dykes and sheets in Iceland: local inclined (cone) sheets and regional dykes, and mechanical anisotropy whereby sheet intrusions become arrested at discontinuities.