Details
| Original language | English |
|---|---|
| Pages (from-to) | 227-248 |
| Number of pages | 22 |
| Journal | Comptes Rendus - Geoscience |
| Volume | 354 |
| Issue number | S1 |
| Early online date | 6 May 2022 |
| Publication status | Published - 2023 |
Abstract
This review highlights the rheological and phase proportions variation induced by cooling events from superliquidus temperature (melt) to subliquidus temperatures. It provides a comprehensive view of the rheological response of magmatic systems undergoing dynamic cooling and shear deformation. The two main parameters which are of importance to model the rheological properties of such crystallizing systems and which are simultaneously poorly investigated so far are crystallization and strain rates. The response to relatively high deformation rates results in shear thinning behavior in partly crystallized systems under variable shear rate and it should be considered in magmatic processes. Due to the sluggish crystallization of SiO2-rich melts, data are mainly available for mafic systems, which does not allow a general reappraisal. An attempt to model available literature data for less evolved systems in dynamic scenarios and a comparison withMELTS algorithm approach (thermodynamic equilibriumconditions) is provided. Since there are difficulties in comparing experimental data gained using different methodologies, we focus mainly on data obtained with the concentric cylinder technique. This highlights the fact that a general experimental protocol is needed in order to compare and model viscosity data to predict the dynamic rheological evolution for volcanic rocks.
Keywords
- Cooling rate,Modelling, Crystal nucleation and growth,Magma rheology, Viscosity, Magma rheology, Cooling rate, Crystal nucleation and growth, Modelling
ASJC Scopus subject areas
- Environmental Science(all)
- Global and Planetary Change
- Earth and Planetary Sciences(all)
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In: Comptes Rendus - Geoscience, Vol. 354, No. S1, 2023, p. 227-248.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Rheological changes in melts and magmas induced by crystallization and strain rate
AU - Vetere, Francesco
AU - Iezzi, Gianluca
AU - Perugini, Diego
AU - Holtz, Francois
N1 - Publisher Copyright: © Académie des sciences, Paris and the authors, 2022. Some rights reserved.
PY - 2023
Y1 - 2023
N2 - This review highlights the rheological and phase proportions variation induced by cooling events from superliquidus temperature (melt) to subliquidus temperatures. It provides a comprehensive view of the rheological response of magmatic systems undergoing dynamic cooling and shear deformation. The two main parameters which are of importance to model the rheological properties of such crystallizing systems and which are simultaneously poorly investigated so far are crystallization and strain rates. The response to relatively high deformation rates results in shear thinning behavior in partly crystallized systems under variable shear rate and it should be considered in magmatic processes. Due to the sluggish crystallization of SiO2-rich melts, data are mainly available for mafic systems, which does not allow a general reappraisal. An attempt to model available literature data for less evolved systems in dynamic scenarios and a comparison withMELTS algorithm approach (thermodynamic equilibriumconditions) is provided. Since there are difficulties in comparing experimental data gained using different methodologies, we focus mainly on data obtained with the concentric cylinder technique. This highlights the fact that a general experimental protocol is needed in order to compare and model viscosity data to predict the dynamic rheological evolution for volcanic rocks.
AB - This review highlights the rheological and phase proportions variation induced by cooling events from superliquidus temperature (melt) to subliquidus temperatures. It provides a comprehensive view of the rheological response of magmatic systems undergoing dynamic cooling and shear deformation. The two main parameters which are of importance to model the rheological properties of such crystallizing systems and which are simultaneously poorly investigated so far are crystallization and strain rates. The response to relatively high deformation rates results in shear thinning behavior in partly crystallized systems under variable shear rate and it should be considered in magmatic processes. Due to the sluggish crystallization of SiO2-rich melts, data are mainly available for mafic systems, which does not allow a general reappraisal. An attempt to model available literature data for less evolved systems in dynamic scenarios and a comparison withMELTS algorithm approach (thermodynamic equilibriumconditions) is provided. Since there are difficulties in comparing experimental data gained using different methodologies, we focus mainly on data obtained with the concentric cylinder technique. This highlights the fact that a general experimental protocol is needed in order to compare and model viscosity data to predict the dynamic rheological evolution for volcanic rocks.
KW - Cooling rate,Modelling
KW - Crystal nucleation and growth,Magma rheology
KW - Viscosity
KW - Magma rheology
KW - Cooling rate
KW - Crystal nucleation and growth
KW - Modelling
UR - http://www.scopus.com/inward/record.url?scp=85183132545&partnerID=8YFLogxK
U2 - 10.5802/crgeos.125
DO - 10.5802/crgeos.125
M3 - Article
AN - SCOPUS:85130751327
VL - 354
SP - 227
EP - 248
JO - Comptes Rendus - Geoscience
JF - Comptes Rendus - Geoscience
SN - 1631-0713
IS - S1
ER -