Article
Licensed
Unlicensed
Requires Authentication
Comparative in situ X-ray diffraction study of San Carlos olivine: Influence of water on the 410 km seismic velocity jump in Earth’s mantle
-
Jiuhua Chen
,
Haozhe Liu
Published/Copyright:
April 2, 2015
Abstract
A comparative study of the equation of states of hydrous (0.4 wt% H2O) and anhydrous San Carlos olivine (<30 ppm H2O) was conducted using synchrotron X-rays up to 11 GPa in a diamond anvil cell (DAC) at ambient temperature. Both samples were loaded in the same high-pressure chamber of the DAC to eliminate the possible pressure difference in different experiments. The obtained compression data were fitted to the third-order Birch-Murnaghan equation of state, yielding a bulk modulus K0 = 123(3) GPa for hydrous olivine and K0 = 130(4) GPa for anhydrous olivine as K0′ is fixed at 4.6. Therefore, 0.4 wt% H2O in olivine results in a 5% reduction in bulk modulus. Previous studies reported bulk modulus reduction by water in olivine’s high-pressure polymorph (wadsleyite), to which the transformation from olivine gives rise to the seismic discontinuity at 410 km depth. The new data results in a reduction in the magnitude of the discontinuity by 50% in vP and 30% in vS (for 1:5 water partitioning between olivine and wadsleyite) with respect to anhydrous mantle. Previous knowledge of the influence of water on this phase transition has been in opposition to a large amount of water [e.g., 200 ppm by Wood (1995)] existing at 410 km depth. Calculation of the seismic velocities based on newly available elasticity data of the hydrous phases indicates that the presence of water is favorable for the mineral composition model (pyrolite) and seismic observations in terms of the magnitude of the 410 km discontinuity.
Keywords: High-pressure studies; equation of state; XRD data; hydrous olivine; San Carlos olivine; 410 km discontinuity; hydrogen; compressibility measurements
Received: 2010-5-11
Accepted: 2010-12-28
Published Online: 2015-4-2
Published in Print: 2011-5-1
© 2015 by Walter de Gruyter Berlin/Boston
You are currently not able to access this content.
You are currently not able to access this content.
Articles in the same Issue
- Comparative in situ X-ray diffraction study of San Carlos olivine: Influence of water on the 410 km seismic velocity jump in Earth’s mantle
- Visualizing trace element distribution in quartz using cathodoluminescence, electron microprobe, and laser ablation-inductively coupled plasma-mass spectrometry
- Krotite, CaAl2O4, a new refractory mineral from the NWA 1934 meteorite
- Translation interface modulation in NC-pyrrhotites: Direct imaging by TEM and a model toward understanding partially disordered structural states
- Crystal chemistry of Ti-rich fluorophlogopite from Presidente Olegario, Alto Paranaíba igneous province, Brazil
- First-principles study of diffusion and viscosity of anorthite (CaAl2Si2O8) liquid at high pressure
- Aluminous and alkali-deficient tourmaline from the Singhbhum Shear Zone, East Indian shield: Insight for polyphase boron infiltration during regional metamorphism
- Effect of lactate, glycine, and citrate on the kinetics of montmorillonite dissolution
- Acid neutralization by dissolution of alkaline paper mill wastes and implications for treatment of sulfide-mine drainage
- Fast ion conduction character and ionic phase-transition in silver sulfosalts: The case of fettelite [Ag6As2S7][Ag10HgAs2S8]
- Structure of walstromite, BaCa2Si3O9, and its relationship to CaSiO3-walstromite and wollastonite-II
- Cathodoluminescence properties and trace element signature of hydrothermal quartz: A fingerprint of growth dynamics
- Formation conditions for triple-chain silicates
- In situ determination of the spinel–post-spinel transition in Fe3O4 at high pressure and temperature by synchrotron X-ray diffraction
- PVT equation of state of epsilon iron and its densities at inner core conditions
- Pressure-induced structural phase transition of the iron end-member of ringwoodite (g-Fe2SiO4) investigated by X-ray diffraction and Mössbauer spectroscopy
- Non-bridging oxygen and high-coordinated aluminum in metaluminous and peraluminous calcium and potassium aluminosilicate glasses: High-resolution 17O and 27Al MAS NMR results
- The crystal structure of δ-Al(OH)3: Neutron diffraction measurements and ab initio calculations
- Electrical properties of natural and synthetic nano-crystalline MgTiO3 geikielite at mantle pressure and temperature conditions
- Density measurement of liquid FeS at high pressures using synchrotron X-ray absorption
- Cranswickite MgSO4·4H2O, a new mineral from Calingasta, Argentina
- Ambrinoite, (K,NH4)2(As,Sb)8S13·H2O, a new mineral from Upper Susa Valley, Piedmont, Italy: The first natural (K,NH4)-hydrated sulfosalt
- Single-crystal Raman spectroscopy of natural schafarzikite FeSb2O4 from Pernek, Slovak Republic
- Nomenclature of the tourmaline-supergroup minerals
- Quantitative Raman spectroscopy: Challenges, shortfalls, and solutions—Application to calcium silicate glasses
- Icosahedrite, Al63Cu24Fe13, the first natural quasicrystal
- Sulfides from martian and lunar basalts: Comparative chemistry for Ni, Co, Cu, and Se
Keywords for this article
High-pressure studies;
equation of state;
XRD data;
hydrous olivine;
San Carlos olivine;
410 km discontinuity;
hydrogen;
compressibility measurements
Articles in the same Issue
- Comparative in situ X-ray diffraction study of San Carlos olivine: Influence of water on the 410 km seismic velocity jump in Earth’s mantle
- Visualizing trace element distribution in quartz using cathodoluminescence, electron microprobe, and laser ablation-inductively coupled plasma-mass spectrometry
- Krotite, CaAl2O4, a new refractory mineral from the NWA 1934 meteorite
- Translation interface modulation in NC-pyrrhotites: Direct imaging by TEM and a model toward understanding partially disordered structural states
- Crystal chemistry of Ti-rich fluorophlogopite from Presidente Olegario, Alto Paranaíba igneous province, Brazil
- First-principles study of diffusion and viscosity of anorthite (CaAl2Si2O8) liquid at high pressure
- Aluminous and alkali-deficient tourmaline from the Singhbhum Shear Zone, East Indian shield: Insight for polyphase boron infiltration during regional metamorphism
- Effect of lactate, glycine, and citrate on the kinetics of montmorillonite dissolution
- Acid neutralization by dissolution of alkaline paper mill wastes and implications for treatment of sulfide-mine drainage
- Fast ion conduction character and ionic phase-transition in silver sulfosalts: The case of fettelite [Ag6As2S7][Ag10HgAs2S8]
- Structure of walstromite, BaCa2Si3O9, and its relationship to CaSiO3-walstromite and wollastonite-II
- Cathodoluminescence properties and trace element signature of hydrothermal quartz: A fingerprint of growth dynamics
- Formation conditions for triple-chain silicates
- In situ determination of the spinel–post-spinel transition in Fe3O4 at high pressure and temperature by synchrotron X-ray diffraction
- PVT equation of state of epsilon iron and its densities at inner core conditions
- Pressure-induced structural phase transition of the iron end-member of ringwoodite (g-Fe2SiO4) investigated by X-ray diffraction and Mössbauer spectroscopy
- Non-bridging oxygen and high-coordinated aluminum in metaluminous and peraluminous calcium and potassium aluminosilicate glasses: High-resolution 17O and 27Al MAS NMR results
- The crystal structure of δ-Al(OH)3: Neutron diffraction measurements and ab initio calculations
- Electrical properties of natural and synthetic nano-crystalline MgTiO3 geikielite at mantle pressure and temperature conditions
- Density measurement of liquid FeS at high pressures using synchrotron X-ray absorption
- Cranswickite MgSO4·4H2O, a new mineral from Calingasta, Argentina
- Ambrinoite, (K,NH4)2(As,Sb)8S13·H2O, a new mineral from Upper Susa Valley, Piedmont, Italy: The first natural (K,NH4)-hydrated sulfosalt
- Single-crystal Raman spectroscopy of natural schafarzikite FeSb2O4 from Pernek, Slovak Republic
- Nomenclature of the tourmaline-supergroup minerals
- Quantitative Raman spectroscopy: Challenges, shortfalls, and solutions—Application to calcium silicate glasses
- Icosahedrite, Al63Cu24Fe13, the first natural quasicrystal
- Sulfides from martian and lunar basalts: Comparative chemistry for Ni, Co, Cu, and Se
