Article
Licensed
Unlicensed
Requires Authentication
Letter. Toward a thermal model for the Skaergaard liquidus
-
S.A. Morse
Published/Copyright:
April 1, 2015
Abstract
After a review of history, it is shown that in a comprehensive 1-atm study by McBirney and Naslund (1990), the Skaergaard liquidus temperature is linear from LZa to UZa on stratigraphic height when corrected to pressure. The augite saturation point at LZa/b has the same liquid composition in terms of plagioclase An content as the corresponding point in the Kiglapait intrusion, studied at 5 kbar by Morse et al. (2004). This temperature, 1203 °C at 5 kbar, is transformed to the Skaergaard pressure at LZa/b to a value of 1173 °C. From this fixed point, all other liquidus temperatures at Skaergaard are scaled to mean plagioclase core compositions from a detailed study by Toplis et al. (2007). All such points from LZb to UZa lie, within experimental error, on the regression from McBirney and Naslund, and the further points in UZb and UZc also agree. Plagioclase-based temperatures at the base of LZa exceed the earlier estimates by ~24 °C and imply a possible temperature of 1210 °C in the Hidden Zone. These results provide a good interim model for the Skaergaard liquidus pending further experimental study at the liquidus.
Keywords : Skaergaard intrusion; cumulate liquidus; experimental temperature; plagioclase cores; augite saturation; pressure correction
Received: 2007-9-13
Accepted: 2007-9-28
Published Online: 2015-4-1
Published in Print: 2008-1-1
© 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
- Footemineite, the Mn-analog of atencioite, from the Foote mine, Kings Mountain, Cleveland County, North Carolina, U.S.A., and its relationship with other roscherite-group minerals
- Element mobility and scale of mass transport in the formation of quartz veins during regional metamorphism of the Waits River Formation, east-central Vermont
- Chemical and physical transfers in an ultramafic rock weathering profile: Part 1. Supergene dissolution of Pt-bearing chromite
- Chemical and physical transfers in an ultramafic rock weathering profile: Part 2. Dissolution vs. accumulation of platinum group minerals
- Comparative Raman spectroscopic study on ilmenite-type MgSiO3 (akimotoite), MgGeO3, and MgTiO3 (geikielite) at high temperatures and high pressures
- A low-pressure–high-temperature technique for the piston-cylinder
- Pressure-induced structural deformation and elastic behavior of wairakite
- Metamorphic vanadian-chromian silicate mineralization in carbon-rich amphibole schists from the Malé Karpaty Mountains, Western Carpathians, Slovakia
- High-temperature deformation of volcanic materials in the presence of water
- Menezesite, the first natural heteropolyniobate, from Cajati, São Paulo, Brazil: Description and crystal structure
- Single-crystal X-ray and Raman investigation on melanophlogite from Varano Marchesi (Parma, Italy)
- Direnzoite, [NaK6MgCa2(Al13Si47O120)·36H2O], a new zeolite from Massif Central (France): Description and crystal structure
- On twinning and microstructures in calcite and dolomite
- Density functional calculations of the electronic structure and optical properties of aluminosilicate polymorphs (Al2SiO5)
- Crystal-size distribution and composition of garnets in eclogites from the Dabie orogen, central China
- Cation order/disorder behavior and crystal chemistry of pyrope-grossular garnets: An 17O 3QMAS and 27Al MAS NMR spectroscopic study
- Analytical transmission electron microscopy study of a natural MORB sample assemblage transformed at high pressure and high temperature
- Barioperovskite, BaTiO3, a new mineral from the Benitoite Mine, California
- The nature of unusual luminescence in natural calcite CaCO3
- Carbonate in igneous and metamorphic fluorapatite: Two type A and two type B substitutions
- The crystal structure of diopside at pressure to 10 GPa
- Electron backscatter diffraction analysis of zircon: A systematic assessment of match unit characteristics and pattern indexing optimization
- Compressibility trends of the clinopyroxenes, and in-situ high-pressure single-crystal X-ray diffraction study of jadeite
- Synthesis and characterization of low-OH– fluor-chlorapatite: A single-crystal XRD and NMR spectroscopic study
- Pressure dependence of the hydrogen-bond geometry in topaz-OD from neutron powder diffraction
- Environments around Al, Si, and Ca in aluminate and aluminosilicate melts by X-ray absorption spectroscopy at high temperature
- The origin of S4+ detected in silicate glasses by XANES
- Effects of ionizing radiation on the hollandite structure-type: Ba0.85Cs0.26Al1.35Fe0.77Ti5.90O16
- Letter. Toward a thermal model for the Skaergaard liquidus
Keywords for this article
Skaergaard intrusion;
cumulate liquidus;
experimental temperature;
plagioclase cores;
augite saturation;
pressure correction
Articles in the same Issue
- Footemineite, the Mn-analog of atencioite, from the Foote mine, Kings Mountain, Cleveland County, North Carolina, U.S.A., and its relationship with other roscherite-group minerals
- Element mobility and scale of mass transport in the formation of quartz veins during regional metamorphism of the Waits River Formation, east-central Vermont
- Chemical and physical transfers in an ultramafic rock weathering profile: Part 1. Supergene dissolution of Pt-bearing chromite
- Chemical and physical transfers in an ultramafic rock weathering profile: Part 2. Dissolution vs. accumulation of platinum group minerals
- Comparative Raman spectroscopic study on ilmenite-type MgSiO3 (akimotoite), MgGeO3, and MgTiO3 (geikielite) at high temperatures and high pressures
- A low-pressure–high-temperature technique for the piston-cylinder
- Pressure-induced structural deformation and elastic behavior of wairakite
- Metamorphic vanadian-chromian silicate mineralization in carbon-rich amphibole schists from the Malé Karpaty Mountains, Western Carpathians, Slovakia
- High-temperature deformation of volcanic materials in the presence of water
- Menezesite, the first natural heteropolyniobate, from Cajati, São Paulo, Brazil: Description and crystal structure
- Single-crystal X-ray and Raman investigation on melanophlogite from Varano Marchesi (Parma, Italy)
- Direnzoite, [NaK6MgCa2(Al13Si47O120)·36H2O], a new zeolite from Massif Central (France): Description and crystal structure
- On twinning and microstructures in calcite and dolomite
- Density functional calculations of the electronic structure and optical properties of aluminosilicate polymorphs (Al2SiO5)
- Crystal-size distribution and composition of garnets in eclogites from the Dabie orogen, central China
- Cation order/disorder behavior and crystal chemistry of pyrope-grossular garnets: An 17O 3QMAS and 27Al MAS NMR spectroscopic study
- Analytical transmission electron microscopy study of a natural MORB sample assemblage transformed at high pressure and high temperature
- Barioperovskite, BaTiO3, a new mineral from the Benitoite Mine, California
- The nature of unusual luminescence in natural calcite CaCO3
- Carbonate in igneous and metamorphic fluorapatite: Two type A and two type B substitutions
- The crystal structure of diopside at pressure to 10 GPa
- Electron backscatter diffraction analysis of zircon: A systematic assessment of match unit characteristics and pattern indexing optimization
- Compressibility trends of the clinopyroxenes, and in-situ high-pressure single-crystal X-ray diffraction study of jadeite
- Synthesis and characterization of low-OH– fluor-chlorapatite: A single-crystal XRD and NMR spectroscopic study
- Pressure dependence of the hydrogen-bond geometry in topaz-OD from neutron powder diffraction
- Environments around Al, Si, and Ca in aluminate and aluminosilicate melts by X-ray absorption spectroscopy at high temperature
- The origin of S4+ detected in silicate glasses by XANES
- Effects of ionizing radiation on the hollandite structure-type: Ba0.85Cs0.26Al1.35Fe0.77Ti5.90O16
- Letter. Toward a thermal model for the Skaergaard liquidus
