2024-03-29T15:36:23Zhttp://doidb.wdc-terra.org/oaip/oaioai:doidb.wdc-terra.org:64062020-09-28T11:17:24ZDOIDBDOIDB.FID
doi:10.5880/fidgeo.2018.012
eng
GFZ German Research Centre for Geosciences
http://www.gfz-potsdam.de/
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2019-11-28
urn:ogc:def:crs:EPSG:4326
Supplementary Material for Analogue Experiments on Lateral versus Vertical Dike Propagation
2018-05-02
creation
doi:10.5880/fidgeo.2018.012
Urbani, Stefano
University of Roma Tre, Rome, Italy
author
Acocella, Valerio
University of Roma Tre, Rome, Italy
author
Rivalta, Eleonora
GFZ German Research Centre for Geosciences, Potsdam, Germany
author
Laboratory of Experimental Tectonics (University of Roma TRE, Italy)
originator
GFZ Data Services
datapub@gfz-potsdam.de
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The dataset includes movies of 29 analogue experiments performed to investigate the effects on dike propagation by the following imposed parameters: density ratio between host-rock and magma analogues, rigidity layering and density layering of the host medium, flow rate and topography. The purpose of the experiments is to define a hierarchy of all the parameters considered, by varying systematically each of them, comparing semi-quantitatively the variations on dike geometry and velocity.
Experimental setup
The experimental set-up consists of a 33 × 58 × 38.5 cm3 Plexiglas box and a peristaltic pump that injects water (magma analogue) into pig-skin gelatin (crustal analogue) alternatively from the bottom (Set 1) and the side of the box (Set 2).
The gelatin rheological properties are varied by mixing different concentrations of gelatin powder and NaCl. We refer to “rigidity layering” when the rigidity ratio (i.e. Young’s Modulus) between the upper and lower layer (Eu/El) is < or > 1, and to “density layering” when Eu/El ~ 1, but the two layers show different densities (i.e. the ratio between the density of the upper and lower layer, ρU/ρL). The experiments with topography are prepared by imposing a mold with gently inward dipping flanks (2.4° and 3.7°) on the opposite sides of the box separated by a 8 cm wide horizontal plain on the gelatin surface.
This configuration simulates the 2-D along-strike topography of the 2014 Bardarbunga intrusion (Iceland) and allows investigating the role of two opposite slopes on dike propagation. The topography profile dips parallel to the long side of the Plexiglas box (x axis in Figure 1 of Urbani et al. 2018). The flow rate has been changed between 0.079 and 0.435 ml/s. For the details about the model set-up, experimental results and interpretation refer to Urbani et al. (2018).
The time-lapse movies show the time evolution of the dike shape, in side and map view, of 29 out of 33 models presented in Urbani et al. (2018). It is recommended to open the films with the VLC media player. The time-lapse of each experiment is indicated in the bottom left corner.
A full list of files is given in “Experiments_Summary_2018-012.pdf” in which Set 1 (bottom injection) and Set 2 (lateral injection) experiments are indicated in red and blue color respectively. The same file also provides a summary of the boundary conditions imposed in each experiment. Tu and Tl indicate the thickness of the upper and lower layer respectively.
Complete
Urbani, Stefano
University of Roma Tre, Rome, Italy
Post-Doc Researcher
stefano.urbani@uniroma3.it
pointOfContact
crustal layering
rigidity
Bardarbunga
EPOS
multi-scale laboratories
analogue models of geologic processes
analogue modelling results
EARTH SCIENCE SERVICES > MODELS > GEOLOGIC/TECTONIC/PALEOCLIMATE MODELS
EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS
NASA/GCMD Earth Science Keywords
publication
tectonic setting > plate spreading center setting
tectonic setting > plate margin setting > active spreading center setting
EPOS WP16 Analogue Main Setting
publication
tectonic process > spreading
magmatic process > intrusion
magmatic process > eruption
rifting
magmatic process
EPOS WP16 Analogue Process/Hazard
publication
volcano
dike
EPOS WP16 Analogue Geologic Structure
publication
Water
Gelatine > Pig skin
EPOS WP16 Analogue Material
publication
Glass/Plexiglas box > Glass/Plexiglas box (cm scale)
EPOS WP16 Analogue Apparatus
publication
Matlab (Mathworks)
EPOS WP16 Analogue Software
publication
Generic camera
EPOS WP16 Analogue Monitoring
publication
Surface image
EPOS WP16 Analogue Measured Property
publication
CC BY 4.0
CC BY 4.0
10.1029/2017JB015376
DOI
IsSupplementTo
eng
Along strike topography along-strike topography of the 2014 Bardarbunga intrusion
-17.77313232421875
-16.556396484375
64.55906111505632
64.9072397186371
http://dx.doi.org/doi:10.5880/fidgeo.2018.012
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