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Forsterite '08 Griggs deformation apparatus 3. Rheology of partially molten rocks High P & T - Solid-medium pressure vessels (deformation set-up) high.

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Presentation on theme: "Forsterite '08 Griggs deformation apparatus 3. Rheology of partially molten rocks High P & T - Solid-medium pressure vessels (deformation set-up) high."— Presentation transcript:

1 Forsterite '08 Griggs deformation apparatus 3. Rheology of partially molten rocks High P & T - Solid-medium pressure vessels (deformation set-up) high pressures (up to 50+ kbar) -> not fully isotropic internal graphite furnace - > larger uncertainty on T profile

2 Forsterite '08 Paterson gas-medium apparatus (Orleans) 3. Rheology of partially molten rocks High P & T – Gas-medium deformation apparatus from Champallier, 2005

3 Forsterite '08 3. Rheology of partially molten rocks High P & T – Gas-medium deformation apparatus from Schmocker et al., JGR 2003

4 Forsterite '08 3. Rheology of partially molten rocks Partially molten plagioclase aggregates: Anorthite/Labradorite + 0-12% glass Dimanov et al., JGR 1998, Tectonoph. 2000

5 Forsterite '08 3. Rheology of partially molten rocks Partially molten plagioclase aggregates: Anorthite/Labradorite + 0-12% glass Dimanov et al., JGR 1998, Tectonoph. 2000

6 Forsterite '08 3. Rheology of partially molten rocks Partially molten plagioclase aggregates: Anorthite/Labradorite + 0-12% glass Dimanov et al., JGR 1998, Tectonoph. 2000 Wark & Watson, EPSL 1998

7 Forsterite '08 3. Rheology of partially molten rocks Partially molten olivine aggregates: Olivine + 0-10% MORB Hirth & Kohlstedt, JGR 1995a,b, EPSL 1996

8 Forsterite '08 3. Rheology of partially molten rocks Hirth & Kohlstedt, JGR 1995a,b, EPSL 1996

9 Forsterite '08 3. Rheology of partially molten rocks – Effect of water Hirth & Kohlstedt, JGR 1995a,b, EPSL 1996 Partially molten olivine aggregates: Olivine + 0-10% MORB

10 Forsterite '08 3. Rheology of partially molten rocks – Effect of water Hirth & Kohlstedt, JGR 1995a,b, EPSL 1996

11 Forsterite '08 3. Rheology of partially molten rocks – Effect of water Scott & Kohlstedt, EPSL: 2006

12 Forsterite '08 3. Rheology of partially molten rocks Mecklenburgh & Rutter, JSG 2003 Partially molten synthetic granite: quartz + quartz-albite glass

13 Forsterite '08 3. Rheology of partially molten rocks Rutter, Brodie & Irving, JGR 2006 Partially molten synthetic granite: quartz + quartz-albite glass + H2O

14 Forsterite '08 3. Rheology of partially molten rocks Rutter, Brodie & Irving, JGR 2006 Partially molten synthetic granite: quartz + quartz-albite glass + H2O

15 Forsterite '08 4. From pure melt to solid rock - Rheological thresholds Rutter, Brodie & Irving, JGR 2006 Partially molten synthetic granite: quartz + quartz-albite glass + H2O

16 Forsterite '08 Rosenberg, IJES 2001 Costa, GRL 2005 4. From pure melt to solid rock - Rheological thresholds

17 Forsterite '08 Caricchi et al., EPSL 2007 4. From pure melt to solid rock - Rheological thresholds

18 Forsterite '08 Burg & Vigneresse, 2002 4. From pure melt to solid rock - Rheological thresholds

19 Forsterite '08 Holtzman et al., Science 2003, G3 2003 J. of Petrology 2005 4. Large strain deformation – Melt segregation Large strain experiments on partially molten olivine: - olivine + 4-6% MORB - olivine + MORB + chromite 1200-1300°C, 3 kbars Paterson apparatus

20 Forsterite '08 Holtzman et al., 2003, 2005 4. Large strain deformation – Melt segregation

21 Forsterite '08 4. Large strain deformation – Melt segregation Simple shear, 1200-1300°C, 3kbars Olivine aggregates (Bystricky et al., Science 2000) Olivine + 4% MORB Olivine + 6% MORB + chromite (Holtzman et al., Science 2003) Lattice preferred orientations (LPO)

22 Forsterite '08 4. Large strain deformation – Melt segregation from Bystricky 2003 Holtzman et al. 2003

23 Forsterite '08 Holtzman et al., Science 2003, G3 2005 4. Large strain deformation – Melt segregation

24 Forsterite '08 Katz et al., Nature 2006 4. Large strain deformation – Melt segregation

25 Forsterite '08 Morgan et al., JGR 1999 4. Large strain deformation – Melt segregation

26 Forsterite '08 4. Large strain deformation – Melt segregation Granular flow in water-rich quartz aggregates torsion experiments in gas-medium deformation apparatus

27 Forsterite '08 Schmocker et al., 2003 4... Liquid segregation & Strain partitioning Granular flow in water-rich quartz aggregates

28 Forsterite '08 Schmocker et al., 2003 4... Liquid segregation & Strain partitioning Granular flow in water-rich quartz aggregates

29 Forsterite '08 Déformation de suspensions magmatiques (0-65% de solide) Haplogranitic melt + Al 2 O 3 crystals Arbaret et al., JGR 2007 Champallier et al., EPSL 2008

30 Forsterite '08 Déformation de suspensions magmatiques (0-65% de solide) Arbaret et al., JGR 2007 Champallier et al., EPSL 2008

31 Forsterite '08 Déformation de suspensions magmatiques (0-65% de solide) Arbaret et al., JGR 2007 Champallier et al., EPSL 2008

32 Forsterite '08 Déformation de suspensions magmatiques (0-65% de solide) Arbaret et al., JGR 2007 54% crystal fraction

33 Forsterite '08 Déformation de suspensions magmatiques (0-65% de solide) Arbaret et al., JGR 2007 extrait de Champallier 2005

34 Forsterite '08 Déformation de suspensions magmatiques (0-65% de solide) Arbaret et al., JGR 2007

35 Forsterite '08 Future directions liquide haplotonalitique partiellement cristallisé (quartz nodules + plagioclase) - 775°C, 300 MPa non déformé γ ~ 3.7 - sensitive load cell in Paterson apparatus => complete sets of experiments => robust flow laws - thorough studies on fabric development (SPO, LPO) - deformation during crystallization

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