Experimental constraints of metamorphic pressure and temperature, and phase relations of a phlogopite-bearing orthopyroxene granulite from Howard hills, Napier complex, East Antarctica

Kei Sato, Tomoharu Miyamoto, Toshisuke Kawasaki

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

High-pressure and high-temperature experiments were carried out at 9-13 kbar and 950-1200°C using a piston-cylinder apparatus, simulating the equilibrium conditions of a phlogopite-bearing orthopyroxene granulite from the Howard Hills, Napier Complex, East Antarctica. This granulite consists of orthopyroxene, sapphirine, spinel, alkali feldspar and F-rich phlogopite with minor amounts of plagioclase, rutile and quartz, and is garnet-free. The experiments clarified the equilibrium phase relations of the phlogopite-bearing orthopyroxene granulite under ultrahigh-temperature metamorphism conditions. The following mineral assemblages were obtained with decreasing temperature: orthopyroxene + spinel + liquid, orthopyroxene + phlogopite + spinel + liquid, orthopyroxene + phlogopite + sapphirine + spinel + rutile + liquid, orthopyroxene + alkali feldspar + phlogopite + sapphirine + spinel + rutile, orthopyroxene + alkali feldspar + plagioclase + phlogopite + sapphirine + spinel + rutile. Liquid was found in run products at 9 kbar and temperatures of ≥1100°C, and at pressures of 11-13 kbar and 1150°C. At higher pressure, garnet coexists with orthopyroxene, alkali feldspar, plagioclase, phlogopite, sapphirine, rutile and spinel. These experimental results constrain the P-T conditions of garnet-free, phlogopite-bearing orthopyroxene granulite from the Howard Hills.

Original languageEnglish
Pages (from-to)191-201
Number of pages11
JournalJournal of Mineralogical and Petrological Sciences
Volume99
Issue number4
DOIs
Publication statusPublished - Dec 1 2004

Fingerprint

phlogopite
Antarctic regions
granulite
orthopyroxene
spinel
rutile
sapphirine
alkalies
alkali feldspar
plagioclase
garnets
temperature
liquids
garnet
liquid
ultrahigh temperature metamorphism
Antarctica
pistons
quartz
P-T conditions

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

Cite this

@article{90dc540bd2004db48c5ae264a05415cf,
title = "Experimental constraints of metamorphic pressure and temperature, and phase relations of a phlogopite-bearing orthopyroxene granulite from Howard hills, Napier complex, East Antarctica",
abstract = "High-pressure and high-temperature experiments were carried out at 9-13 kbar and 950-1200°C using a piston-cylinder apparatus, simulating the equilibrium conditions of a phlogopite-bearing orthopyroxene granulite from the Howard Hills, Napier Complex, East Antarctica. This granulite consists of orthopyroxene, sapphirine, spinel, alkali feldspar and F-rich phlogopite with minor amounts of plagioclase, rutile and quartz, and is garnet-free. The experiments clarified the equilibrium phase relations of the phlogopite-bearing orthopyroxene granulite under ultrahigh-temperature metamorphism conditions. The following mineral assemblages were obtained with decreasing temperature: orthopyroxene + spinel + liquid, orthopyroxene + phlogopite + spinel + liquid, orthopyroxene + phlogopite + sapphirine + spinel + rutile + liquid, orthopyroxene + alkali feldspar + phlogopite + sapphirine + spinel + rutile, orthopyroxene + alkali feldspar + plagioclase + phlogopite + sapphirine + spinel + rutile. Liquid was found in run products at 9 kbar and temperatures of ≥1100°C, and at pressures of 11-13 kbar and 1150°C. At higher pressure, garnet coexists with orthopyroxene, alkali feldspar, plagioclase, phlogopite, sapphirine, rutile and spinel. These experimental results constrain the P-T conditions of garnet-free, phlogopite-bearing orthopyroxene granulite from the Howard Hills.",
author = "Kei Sato and Tomoharu Miyamoto and Toshisuke Kawasaki",
year = "2004",
month = "12",
day = "1",
doi = "10.2465/jmps.99.191",
language = "English",
volume = "99",
pages = "191--201",
journal = "Journal of Mineralogical and Petrological Sciences",
issn = "1345-6296",
publisher = "Tohoku University",
number = "4",

}

TY - JOUR

T1 - Experimental constraints of metamorphic pressure and temperature, and phase relations of a phlogopite-bearing orthopyroxene granulite from Howard hills, Napier complex, East Antarctica

AU - Sato, Kei

AU - Miyamoto, Tomoharu

AU - Kawasaki, Toshisuke

PY - 2004/12/1

Y1 - 2004/12/1

N2 - High-pressure and high-temperature experiments were carried out at 9-13 kbar and 950-1200°C using a piston-cylinder apparatus, simulating the equilibrium conditions of a phlogopite-bearing orthopyroxene granulite from the Howard Hills, Napier Complex, East Antarctica. This granulite consists of orthopyroxene, sapphirine, spinel, alkali feldspar and F-rich phlogopite with minor amounts of plagioclase, rutile and quartz, and is garnet-free. The experiments clarified the equilibrium phase relations of the phlogopite-bearing orthopyroxene granulite under ultrahigh-temperature metamorphism conditions. The following mineral assemblages were obtained with decreasing temperature: orthopyroxene + spinel + liquid, orthopyroxene + phlogopite + spinel + liquid, orthopyroxene + phlogopite + sapphirine + spinel + rutile + liquid, orthopyroxene + alkali feldspar + phlogopite + sapphirine + spinel + rutile, orthopyroxene + alkali feldspar + plagioclase + phlogopite + sapphirine + spinel + rutile. Liquid was found in run products at 9 kbar and temperatures of ≥1100°C, and at pressures of 11-13 kbar and 1150°C. At higher pressure, garnet coexists with orthopyroxene, alkali feldspar, plagioclase, phlogopite, sapphirine, rutile and spinel. These experimental results constrain the P-T conditions of garnet-free, phlogopite-bearing orthopyroxene granulite from the Howard Hills.

AB - High-pressure and high-temperature experiments were carried out at 9-13 kbar and 950-1200°C using a piston-cylinder apparatus, simulating the equilibrium conditions of a phlogopite-bearing orthopyroxene granulite from the Howard Hills, Napier Complex, East Antarctica. This granulite consists of orthopyroxene, sapphirine, spinel, alkali feldspar and F-rich phlogopite with minor amounts of plagioclase, rutile and quartz, and is garnet-free. The experiments clarified the equilibrium phase relations of the phlogopite-bearing orthopyroxene granulite under ultrahigh-temperature metamorphism conditions. The following mineral assemblages were obtained with decreasing temperature: orthopyroxene + spinel + liquid, orthopyroxene + phlogopite + spinel + liquid, orthopyroxene + phlogopite + sapphirine + spinel + rutile + liquid, orthopyroxene + alkali feldspar + phlogopite + sapphirine + spinel + rutile, orthopyroxene + alkali feldspar + plagioclase + phlogopite + sapphirine + spinel + rutile. Liquid was found in run products at 9 kbar and temperatures of ≥1100°C, and at pressures of 11-13 kbar and 1150°C. At higher pressure, garnet coexists with orthopyroxene, alkali feldspar, plagioclase, phlogopite, sapphirine, rutile and spinel. These experimental results constrain the P-T conditions of garnet-free, phlogopite-bearing orthopyroxene granulite from the Howard Hills.

UR - http://www.scopus.com/inward/record.url?scp=33646230408&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646230408&partnerID=8YFLogxK

U2 - 10.2465/jmps.99.191

DO - 10.2465/jmps.99.191

M3 - Article

AN - SCOPUS:33646230408

VL - 99

SP - 191

EP - 201

JO - Journal of Mineralogical and Petrological Sciences

JF - Journal of Mineralogical and Petrological Sciences

SN - 1345-6296

IS - 4

ER -