-
Senger, Kim & Galland, Olivier
(2022).
Early Cretaceous magmatism in central Spitsbergen: stratigraphic and spatial exten.
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Rabbel, Ole; Galland, Olivier; Mair, Karen; Lecomte, Isabelle; Spacapan, Juan Bautista & Palma, Octavio
(2020).
Integration of geological field observations and geophysical data: The El Manzano Sill Complex
(Argentina) as a showcase of igneous intrusions emplaced in active petroleum systems.
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Kjøll, Hans Jørgen; Galland, Olivier; Labrousse, Loic & Andersen, Torgeir Bjørge
(2020).
Emplacement Mechanisms of a Dyke Swarm Across the Brittle-Ductile Transition.
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Kjøll, Hans Jørgen; Galland, Olivier; Labrousse, Loic & Andersen, Torgeir Bjørge
(2020).
Emplacement mechanisms of a dyke swarm across the Brittle- Ductile transition.
Show summary
Dykes are the main magma transport pathways through the Earth’s crust and, in volcanic rifts, they are considered the main mechanism to accommodate tectonic extension. Most models consider dykes as hydro-fractures propagating as brittle tensile, mode I cracks opening perpendicular to the least principal stress. This implies that dykes emplaced in rifts are expected to be sub-vertical and accommodate crustal extension. Here we present detailed field observations of a well-exposed dyke swarm that formed near the brittle-ductile transition at a magma-rich rifted margin during opening of the Iapetus Ocean. It was related to a ca 600 million year-old large igneous province. Our observations show that dykes were not systematically emplaced by purely brittle deformation and that dyke orientation may differ from the typical mode 1 pattern. Distinct dyke morphologies related to different emplacement mechanisms have been recognized including: 1) Brittle dykes that exhibit straight contacts with the host rock, sharp tips, and en-echelon segments with bridges exhibiting angular fragments; 2) Brittle-ductile dykes with undulating contacts, rounded tips, folding of the host rock and contemporaneous brittle and ductile features; 3) Ductile “dykes” with rounded shapes and mingling between partially molten host rock and the intruding mafic magma. The brittle dykes exhibit two distinct orientations separated by ~30° that are mutually cross-cutting, demonstrating that the dyke swam did not consist of only vertical sheets oriented perpendicular to regional extension, as expected in rifts. By using the host-rock layers as markers, a kinematic restoration to quantify the average strain accommodating the emplacement of the dyke complex was performed. This strain estimate shows that the dyke swarm accommodated >100% horizontal extension, but also 27% vertical thickening. This suggests that the magma influx rate was higher than the tectonic stretching rate, which imply that magma was emplaced forcefully, as supported by field observations of the host-rock deformation. Finally, observations of typical “brittle” dykes that were subsequently deformed by ductile mechanisms as well as dykes that were emplaced by purely ductile mechanisms suggest that the fast emplacement of the dyke swarm triggered a rapid shallowing of the brittle-ductile transition. The abrupt dyke emplacement and associated heating resulted in weakening of the crust that probably facilitated the continental break-up, which culminated with opening of the Iapetus Ocean.
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Galland, Olivier
(2020).
Farlige vulkaner i verden.
[Radio].
NRK.
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Galland, Olivier
(2019).
Volcanology laboratory practicals for students at the French school in Oslo.
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Galland, Olivier & Sassier, Caroline
(2019).
Cover page photograph of magazine GeoExPro.
GeoExpro.
ISSN 1744-8743.
16(4),
p. 1–1.
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Galland, Olivier & Sassier, Caroline
(2019).
Photograph on cover page of the magazine GeoExPro.
GeoExpro.
ISSN 1744-8743.
16(4),
p. 1–1.
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Galland, Olivier
(2019).
Geology guide for French school.
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Souche, Alban; Galland, Olivier; Haug, Øystein Thorden & Dabrowski, Marcin
(2019).
Impact of host rock heterogeneity on failure around pressurized conduits: Implications for finger-shaped magmatic intrusions.
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Schmiedel, Tobias; Galland, Olivier; Haug, Øystein Thorden; Dumazer, Guillaume & Breitkreuz, Christoph
(2019).
Coulomb failure of Earth’s brittle crust controls growth, emplacement and shapes of igneous sills, saucer-shaped sills and laccoliths
.
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Poppe, Sam; Holohan, Eoghan; Galland, Olivier & Kervyn, Matthieu
(2019).
Magma-induced deformation of the Earth’s upper crust in nature and in laboratory experiments scanned by X-ray Computed Tomography.
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Mattsson, Tobias; Burchardt, Steffi; Palma, Octavio; Galland, Olivier; Almqvist, Bjarne S.G. & Hammer, Øyvind
[Show all 9 contributors for this article]
(2019).
Magmatic fabrics related to different growth stages of the Cerro Bayo Cryptodome.
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Haug, Øystein Thorden; Galland, Olivier; Souloumiac, Pauline; Souche, Alban; Guldstrand, Frank Bo Buster & Schmiedel, Tobias
[Show all 7 contributors for this article]
(2019).
Shear versus tensile failure mechanisms induced by sill intrusions – Implications for emplacement of conical and saucer-shaped intrusions.
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Galland, Olivier; de la Cal, Hernán & Rabbel, Ole
(2019).
Laccolith-induced deformation – A case study integrating field mapping, 3D seismic and well data at Pampa Amarilla, Neuquén Basin, Argentina.
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Bertelsen, Håvard Svanes; Galland, Olivier; Rogers, Benjamin David; Dumazer, Guillaume Henri & Abbana Benanni, Alexandre
(2019).
Laboratory modeling of coeval brittle and ductile deformation during magma emplacement into viscoelastic rocks.
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Galland, Olivier
(2019).
The Physical Geology of Subvolcanic Systems – Laccoliths, Sills and Dykes (LASI6).
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Kjøll, Hans Jørgen; Galland, Olivier; Labrousse, Loic & Andersen, Torgeir Bjørge
(2019).
Emplacement Mechanisms of a Dyke Swarm Across the Brittle-Ductile Transition.
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Guldstrand, Frank Bo Buster; Bertelsen, Håvard Svanes; Souche, Alban; Galland, Olivier & Zanella, Alain
(2019).
Intrusion of Viscous Magma in a Cohesive Crust
Visualized and Quantified from Quasi-2D Laboratory Experiments.
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Guldstrand, Frank Bo Buster; Galland, Olivier & Mair, Karen
(2019).
Learning-by-doing in the laboratory.
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Rabbel, Ole; Galland, Olivier; Palma, Octavio; Spacapan, Juan Bautista; Senger, Kim & Lecomte, Isabelle
[Show all 7 contributors for this article]
(2019).
From field observations to seismic modeling: The El Manzano Sill Complex (Argentina) as a showcase of the influence of igneous intrusions on petroleum systems .
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Måløy, Knut Jørgen; Eriksen, Jon Alm; Flekkøy, Eirik Grude; Toussaint, Renaud; Galland, Olivier & Sandnes, Bjørnar
(2019).
Pattern formation of frictional fingers in a gravitational field.
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Måløy, Knut Jørgen; Eriksen, Jon Alm; Flekkøy, Eirik Grude; Toussaint, Renaud; Galland, Olivier & Sandnes, Bjørnar
(2019).
Pattern formation of frictional fingers in a gravitational potential.
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Sleveland, Arve; Midtkandal, Ivar; Galland, Olivier & Leanza, Hector Armando
(2019).
Sedimentary architecture of mixed-process mouth bar deposits in the Mulichinco
Formation, Neuquén Basin, Argentina.
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Sleveland, Arve; Midtkandal, Ivar; Galland, Olivier & Leanza, Hector Armando
(2019).
Compensational stacking and architecture of mouth-bar deposits in a mixed-process deltaic environment; Mulichinco Formation, Neuquén Basin, Argentina.
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Senger, Kim; Betlem, Peter; Rabbel, Ole; Galland, Olivier & Lecomte, Isabelle
(2019).
Early Cretaceous igneous intrusions in Svalbard: seismic modelling as a link between boreholes, outcrops and seismic data.
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Kjøll, Hans Jørgen; Andersen, Torgeir Bjørge; Labrousse, Loic & Galland, Olivier
(2019).
From rift to drift - Construction of the magma-rich pre-Caledonian Iapetus margin of Baltica.
Show summary
The northern part of the pre-Caledonian Iapetus margin, which now rests within nappes in the Scandinavian Caledonides, is generally characterized as a fossil magma-rich rifted margin. The margin developed in the late Ediacaran during the opening of the Iapetus Ocean. It was deformed and metamorphosed during the Caledonian orogeny, but large parts of the margin escaped the penetrative strain and regional metamorphism related to this event, and are now preserved in kilometer-scale boudins. The boudins preserve a several kilometer-thick sedimentary package mostly composed of siliciclastic and carbonaceous rocks. A key unit in the stratigraphy is a stromatolite-bearing dolomitic marble containing pure magnesite lenses as well as Cl-rich scapolite, both indicative of evaporite deposits. This unit can be found at several localities along the Scandinavian Caledonides. A recently described glaciogenic diamictite directly overlies the carbonates, which in turn is overlain by a > 1 km thick shallow marine sandstone succession, possibly marking the onset of rifting. The youngest detrital zircon from the sandstone unit is 698 Ma, providing a useful maximum deposition age. The sedimentary succession rests on top of a basement slice with top-W extensional shear indicators. The deformation has been dated to 637 Ma and corroborates the interpretation that Baltica and Laurentia was rifting at this time. The entire sedimentary succession is dissected by a dense network of mafic dikes, which has been dated to range from 596-608 Ma, providing a minimum estimate for the deposition of the sedimentary succession. This minimum age also rules out the Gaskiers glacial event to be responsible for the deposition of the diamictite. The emplacement of the dike swarm was short and intense and led to local partial melting of the host rocks. The rapid influx of magma exceeded the tectonic stretching rate, which together with their conjugate geometry allowed the dike emplacement to also cause a vertical thickening of the crust synchronous with extension. The diking event led to the break-up of Baltica and Laurentia in the Late Ediacaran after at least 30 million years of rifting and show that the magmatic event started late in the overall rifting history.
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Mair, Karen; Bertelsen, Håvard Svanes; Guldstrand, Frank Bo Buster & Galland, Olivier
(2019).
Learning by doing: Use of research based methods and novel laboratory experiments in teaching Earthquake and Volcanic Processes.
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Kjøll, Hans Jørgen; Andersen, Torgeir Bjørge; Galland, Olivier; Corfu, Fernando; Labrousse, Loic & Tegner, Christian
[Show all 7 contributors for this article]
(2019).
Deep section of a Neoproterozoic fossil magma rich rifted margin exposed.
Show summary
Structures of rifted continental margins are the finite result of active processes when continents rift apart. During the convergent stages of Wilson cycle, remnants of rifted margins may be incorporated into orogens, especially the magma-poor end-member. The magma-rich margins, however, are commonly lost in subduction due to low buoyancy. The understanding of magma-rich margins is therefore mostly based on drill holes and geophysical observations. In this contribution, we explore the temporal evolution and the ambient conditions of a magma-rich rifted margin preserved within the Scandinavian Caledonides. The Scandinavian Dyke Complex was emplaced in a sedimentary basin during the opening of the Iapetus Ocean 615 to 590 million years ago. The dyke complex now constitutes 70-90% of the area and is locally well-preserved despite the complex Caledonian history. Five field seasons in northern Sweden and Norway provide new observations from regional to microscopic scale about the structural geometry, relative timing, and development of the margin. Jadeite in clinopyroxene geothermobarometry, titanium in biotite geothermometry and garnet isopleth modeling show that the ambient pressure and temperature conditions were similar for the entire dyke complex at 0.25 to 0.45 GPa, with contact metamorphic temperatures up to c. 700◦C. Using a photomosaic of a large and well-exposed cliff face we used layers in the metasediments as markers to restore the host-rock back to the pre-dike configuration, allowing us to quantify the average strain accommodated by the dyke swarm. It accommodated for >100% extension and for 27% crustal thickening. From this we infer that the magma influx rate was higher than the tectonic stretching rate, implying that magma was emplaced in a forceful manner, which is also supported by field observations. In the northern part of the study area, high precision dating of magmatic zircon shows that significant partial melting of the sedimentary host-rock, at relatively shallow levels, occurred at 613 ± 1 Ma. This shows that the crust was molten already 6 Ma before the dyke swarm was emplaced at 606 ± 2 Ma. We propose that the locally pervasive partial melting occurred due to high geothermal gradient and introduction of mafic melts in the lower crust. These processes caused a rapid shallowing of the brittle-ductile transition, which thereby significantly reduced the strength of the crust.
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Kjøll, Hans Jørgen; Galland, Olivier; Labrousse, Loic & Andersen, Torgeir Bjørge
(2019).
Dyke emplacement mechanisms across the brittle-ductile transition.
Show summary
Dyke emplacement mechanisms across the brittle-ductile transition
Hans Jørgen Kjøll1, Olivier Galland2, Loic Labrousse3 & Torgeir Andersen1
1 Center for Earth Evolution and Dynamics (CEED), University of Oslo
2 Physics of Geological Processes, the Njord Center, Department of Geosciences, University of Oslo
3 Institut des Sciences de la Terre Paris, ISTeP, CNRS-INSU, Sorbonne Université
Dyking is the main process of magma transport through the Earth’s lithosphere. Dykes are thin sheets exhibiting shapes similar to fractures, so that the main models of dyke emplacement assume that they form by mode I hydraulic fracturing following the σ1-σ2 plane. Because of the rapid strain rates accommodating dyking, it is assumed that dyke propagation and emplacement are only governed by brittle processes, even in the ductile crust. However, the contribution of ductile deformation in dyke emplacement has not been assessed. Here we report detailed and spectacular field observations from northern Sweden and Norway of a ~605 Ma old dyke complex emplaced near the brittle-ductile transition. The dyke complex formed during continental rifting and opening of the Iapetus Ocean, and is now exposed in the Scandinavian Caledonides. In northern Sweden, observations are made along a 1.5 km long continuously exposed cliff providing unique and exceptional overview images of the dyke complex. The detailed structural analysis of the dykes and of the structures related to their emplacement allows us to identify distinct dyke emplacement mechanisms, sub-divided into: 1) Brittle dykes that exhibit straight contacts with the host rock, sharp tips, en-echelon segments with either broken bridges or intact bridges between the segments. The dyke thicknesses follow a Weibull distribution, commonly applied to fracture mechanics; 2) Brittle-ductile dykes that exhibit ductile bridges with complex patterns. Both brittle-ductile and ductile-brittle features are observed, i.e. where ductile flow induced by inflating dykes overprint brittle structures associated with dyke emplacement and vice versa; 3) Ductile “dykes” that show mingling textures between the soft ductile host rock and the intruding mafic magma as well as irregular magmatic boudinage. The dykes exhibit two distinct orientations, and are mutually cross-cutting, suggesting that the dykes did not form as vertical sheets perpendicular to regional extension. Thanks to the well-exposed layering of the dykes’ host rock, we performed a kinematic restoration to quantify the strain induced by the dyke complex. As expected, the dyke complex accommodated >100% extension in agreement with the rifting. However, counter-intuitively it also accommodated 12% of crustal thickening, in agreement with local shortening structures near the dyke walls, showing the forceful mechanism of magma emplacement. Our observations underline the complexity of magma emplacement mechanisms near the brittle-ductile transition and show that dyke emplacement cannot be described as simple mode-I brittle fractures that are being passively filled and inflated by magma.
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Galland, Olivier
(2018).
The impacts of igneous intrusions on the Vaca Muerta Fm., Neuquén Basin, Argentina.
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Galland, Olivier; Bertelsen, Håvard Svanes; Guldstrand, Frank Bo Buster; Schmiedel, Tobias; Rogers, Benjamin David & Souche, Alban
[Show all 8 contributors for this article]
(2018).
Are geodetic models physically relevant for understanding magma transport processes?
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Galland, Olivier & Sassier, Caroline
(2018).
The Puna Plateau: Treasures behind desolation.
GeoExpro.
ISSN 1744-8743.
15(4),
p. 34–37.
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Galland, Olivier; Bertelsen, Håvard Svanes; Guldstrand, Frank Bo Buster; Haug, Øystein Thorden; Souche, Alban & Schmiedel, Tobias
(2018).
Geomechanical modeling of fracturing and damage induced by Igneous Intrusions: implications for fluid flow in volcanic basins.
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Guldstrand, Frank Bo Buster; Galland, Olivier; Souche, Alban; Bertelsen, Håvard Svanes & Zanella, Alain
(2018).
Dyke induced Quasi-2D deformation in a Coulomb brittle host – the influence of host strength on propagation and emplacement.
-
Schmiedel, Tobias & Galland, Olivier
(2018).
Dynamics of sub-volcanic systems in sedimentary basins and related mechanisms of host rock deformation.
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Schmiedel, Tobias & Galland, Olivier
(2018).
Dynamics of sub-volcanic systems in sedimentary basins and related mechanisms of host rock deformation.
-
Schmiedel, Tobias & Galland, Olivier
(2018).
Dynamics of sub-volcanic systems in sedimentary basins and related mechanisms of host rock deformation.
-
Schmiedel, Tobias & Galland, Olivier
(2018).
Dynamics of sub-volcanic systems in sedimentary basins and related mechanisms of host rock deformation.
-
Galland, Olivier
(2018).
NRK - Nyhetsmorgen - Forkser Galland om volkanutbrudd.
[Radio].
NRK - Oslo.
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Sleveland, Arve Rein Nes; Galland, Olivier; Leanza, Hector Armando & Midtkandal, Ivar
(2018).
Architecture of mixed-process mouth-bar deposits; compensational stacking in the Mulichinco Formation, Neuquén Basin, Argentina.
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Rabbel, Ole; Galland, Olivier; Mair, Karen; Lecomte, Isabelle & Spacapan, Juan Bautista
(2018).
Improving seismic interpretation of igneous sill complexes via seismic modelling.
Show summary
Seismic interpretation has been playing a key role in establishing the role of igneous sill complexes emplaced in organic-rich sediments on global climate change throughout geological history (e.g., Svensen et al. 2004, Aarnes et al. 2015): the heat brought by the sills to their organic-rich host leads to massive thermogenic generation of greenhouse gases (e.g., CO2, CH4), eventually catastrophically released to the atmosphere. Robust volume estimates of these greenhouse gases rely on robust estimates of magma volumes of the sill complexes, which require confident mapping of subsurface sill intrusions.
Large sills are easy to map in seismic data, because they create strong property contrasts, which cause high amplitude reflections. However, igneous sills vary strongly in thickness and up to 88 percent of the sills may be missing in the interpretation, since their thickness is below the seismic resolution limit (Schofield et al. 2015).
In this presentation, we present seismic modelling study designed to characterize typical seismic signatures (splitting, stepping, braided reflections) of thin intrusions, and to indicate potential ways to infer the shapes of thin intrusions in the seismic interpretation. Due to their anomalously high vp/vs ratio, intrusions cause a characteristic amplitude-vs-offset (AVO) response with high AVO intercept and gradient. Thus, we will highlight the great potential of using seismic pre-stack and offset data for the interpretation of thin intrusions. Our results indicate how seismic interpretation and thereby volume estimates of sill complexes can be significantly improved using data of relevant quality.
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Haug, Øystein Thorden; Galland, Olivier; Souloumiac, Pauline; Souche, Alban Jean-Rene; Guldstrand, Frank Bo Buster & Schmiedel, Tobias
(2018).
A new model for saucer-shaped intrusions: Shear failure versus tensile opening at sill tips.
Show summary
Sills with a characteristic saucer shape are common features in many sedimentary basins worldwide. Previous models of sill emplacement usually assume that pure elastic bending of the overburden of growing sills control their evolution to saucer shape. However, field observations show that significant shear damage also accommodate sill emplacement. To which extent such damage plays an active role on sill emplacement or not is not understood. To address this, we study the condition for shear failure and the distribution of damage in the overburden of sills using the limit analysis software Optum G2. Through a parameter study, we investigate the effect of the length-to-depth ratio (L/D) of the sill, the cohesion of the host rock and the emplacement depth on the over-pressure within the sill at failure. The results show that the characteristic saucer shape is ubiquitously reproduced using this approach (Haug et al, 2017). The over-pressure required for shear failure scales linearly with the host cohesion and as a power-law of L/D. From these observations, we propose a scaling law for a new shear failure criterion in the overburden of a sill. We compare our scaling law to an analytical solution of hydrofractures, and show that tensile tip propagation is favored for small sills, but overburden shear failure may become favorable for large sills. From these results, we suggest that sills initially grow laterally by tensile propagation until reaching a critical L*, when the overburden fails in shear, leading to the emplacement of saucer-shaped sill’s inclined sheets.
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Schmiedel, Tobias; Galland, Olivier; Haug, Øystein Thorden & Breitkreuz, Christoph
(2018).
How do sills become laccoliths? An answer from integrated laboratory and numerical modelling.
Show summary
Igneous intrusions in the upper brittle crust exhibit diverse shapes ranging from thin sheets (dykes, sills, cone sheets), to thick, massive intrusions (laccoliths, plutons, plugs). Presently, none of the established models of magma emplacement have the capability to simulate this diversity because they account for end member rheology of the host rocks (elastic, viscous or plastic), whereas natural rocks are complex elasto-plastic materials. We investigated the effects of host rock rheology on magma emplacement using scaled laboratory models. The model rocks were dry Coulomb granular materials of variable strength (cohesion). We show that strong (high-cohesion) host rock, results in the emplacement of thin, sheet intrusions (sills, cone sheets). Conversely, weak (low-cohesion) host rock results in the emplacement of massive intrusions (laccoliths, plugs). We integrate our laboratory results with numerical simulations to constrain the host rock deformation mechanism that accommodates magma emplacement in the experiments. Our results show how both sills and laccoliths result from initial thin sills that spread horizontally until triggering shear failure of the overburden at a critical radius. Two scenarios can then happen: (1) the overburden is cohesive enough and allows space opening in the sub-surface to accommodate viscous magma inflow along the failure planes, so sills evolve as sheets (saucer shape or cone sheets), or (2) the overburden is not cohesive enough and does not allow sub-surface space opening to accommodate viscous magma inflow along the failure planes, so the sill inflates and lifts up the overburden along shear zones to form a massive laccolith.
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Guldstrand, Frank Bo Buster & Galland, Olivier
(2017).
Dynamic Surface Deformation due to Dykes and Cone Sheets in a Cohesive Coulomb Brittle Crust.
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Galland, Olivier
(2017).
Current research in Neuquén Basin - Oslo Volcanic Plumbing Systems group.
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Galland, Olivier
(2017).
Modelling structures induced by magma emplacement in sedimentary basins.
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Bertelsen, Håvard Svanes; Guldstrand, Frank Bo Buster & Galland, Olivier
(2017).
Dyke tip processes and large-scale deformation: implications for geodetic modelling.
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Galland, Olivier; Bertelsen, Håvard Svanes; Guldstrand, Frank Bo Buster; Girod, Luc Maurice Ramuntcho; Johannessen, Rikke F. & Bjugger, Fanny
[Show all 8 contributors for this article]
(2017).
Application of open-source photogrammetric software MicMac for geodetic monitoring in laboratory models.
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Michail, Maria; Coltorti, Massimo; Gianolla, Piero; Riva, Alberto; Rosenau, Matthias & Bonadiman, Costanza
[Show all 11 contributors for this article]
(2017).
Analogue modeling on interaction between shallow magma intrusion and a strike-slip fault: Application on the middle Triassic Monzoni Intrusive Complex (Dolomites, Italy).
Show summary
The southwestern part of the Dolomites in Northern Italy has undergone a short-lived Ladinian (Middle Triassic)
tectono-magmatic event, forming a series of significant magmatic features. These intrusive bodies deformed
and metamorphosed the Permo-Triassic carbonate sedimentary framework. In this study we focus on the tectonomagmatic
evolution of the shallow shoshonitic Monzoni Intrusive Complex of this Ladinian event (ca 237 Ma),
covering an area of 20 km^2. This NW-SE elongated intrusive structure (5 km length) shows an orogenic magmatic
affinity which is in contrast to the tectonic regime at the time of intrusion. Strain analysis shows anorogenic
transtensional displacement in accordance with the ENE-WSW extensional pattern in the central Dolomites during
the Ladinian. Field interpretations led to a detailed description of the regional stratigraphic sequence and the
structural features of the study area. However, the geodynamic context of this magmatism and the influence of
the inherited strike-slip fault on the intrusion, are still in question. To better understand the specific natural prototype
and the general mechanisms of magma emplacement in tectonically active areas, we performed analogue
experiments defined by, but not limited to, first order field observations. We have conducted a systematic series
of experiments in different tectonic regimes (static conditions, strike-slip, transtension). We varied the ratio of
viscous to brittle stresses between magma and country rock, by injecting Newtonian fluids both of high and low
viscosity (i.e. silicone oil/vegetable oil) into granular materials of varying cohesion (sand, silica flour, glass beads).
The evolving surface and side view of the experiments were monitored by photogrammetric techniques for strain
analyses and topographic evolution. In our case, the combination of the results from field and analogue experiments
brings new insights regarding the tectonic regime, the geometry of the intrusive body, and the deformational
pattern of the evolving system.
-
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Galland, Olivier
(2017).
Natural fracture characterisation in intrusive systems, Neuquén Basin, Argentina.
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Bertelsen, Håvard Svanes; Guldstrand, Frank Bo Buster & Galland, Olivier
(2017).
Dike tip processes and large-scale deformation: implication for geodetic modelling.
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Schmiedel, Tobias; Galland, Olivier & Breitkreuz, Christoph
(2017).
The control of host rock strength on sill and laccolith emplacement: insights from quantitative laboratory models.
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Rogers, Benjamin David; Bertelsen, Håvard Svanes & Galland, Olivier
(2017).
Magma intrusion in viscoelastic media: laboratory model of coeval brittle and ductile deformation.
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Burchardt, Steffi; Palma, Octavio; Galland, Olivier; Mair, Karen & Jerram, Dougal Alexander
(2017).
Syn-emplacement deformation of the Cerro Bayo laccolith, Argentina.
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Poppe, Sam; Galland, Olivier; Buls, Nico; Holohan, Eoghan; Rosenau, Matthias & Mourgues, Regis
[Show all 7 contributors for this article]
(2017).
An unusual patient: 4D X-ray computed tomography of analogue magma intrusion experiments.
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Haug, Øystein Thorden; Galland, Olivier; Souche, Alban Jean-Rene & Souloumiac, Pauline
(2017).
Shear failure versus tensile opening at sill tips: insights from limit analysis modelling.