UHT granulites of the Highland Complex, Sri Lanka I: Geological and petrological background

Yasuhito Osanai, Krishnan Sajeev, Nobuhiko Nakano, Ippei Kitano, Wilbert K.V. Kehelpannala, Ryosuke Kato, Tatsuro Adachi, Sanjeewa P.K. Malaviarachchi

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抄録

The ultrahigh-temperature (UHT) regional metamorphism of Sri Lanka has a significant role in understanding the tectonics and formation of the Gondwana supercontinent. Sri Lanka is specifically important because of its central position in Gondwana, located between southern India, Madagascar and eastern Antarctica. In particular, the Highland Complex has been the focus of several previous studies because of the prominence of metasedimentary rocks that experienced UHT metamorphism. The central Highland Complex of Sri Lanka consists of Spr-bearing Mg-Al rich granulites intercalated with other pelitic, mafic granulites and calc-silicates, which preserve several textural evidences for UHT metamorphism. The calculated peak metamorphic conditions for the Mg-Al rich granulite yielded a temperature range from 910 to 1005 °C at 1.0 GPa, and the pressure varies between 0.9 to 1.2 GPa. The estimated metamorphic P-T conditions and evolution path is in good agreement with previous studies and also to that of similar rock-types from southern Madagascar, southern India and East Antarctica.

元の言語英語
ページ(範囲)145-156
ページ数12
ジャーナルJournal of Mineralogical and Petrological Sciences
111
発行部数3
DOI
出版物ステータス出版済み - 7 22 2016

Fingerprint

Sri Lanka
ultrahigh temperature metamorphism
highlands
Madagascar
Gondwana
Antarctic regions
India
temperature
supercontinent
regional metamorphism
P-T conditions
metasedimentary rock
rocks
granulite
silicate
tectonics
silicates
rock
Antarctica

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geology

これを引用

UHT granulites of the Highland Complex, Sri Lanka I : Geological and petrological background. / Osanai, Yasuhito; Sajeev, Krishnan; Nakano, Nobuhiko; Kitano, Ippei; Kehelpannala, Wilbert K.V.; Kato, Ryosuke; Adachi, Tatsuro; Malaviarachchi, Sanjeewa P.K.

:: Journal of Mineralogical and Petrological Sciences, 巻 111, 番号 3, 22.07.2016, p. 145-156.

研究成果: ジャーナルへの寄稿記事

Osanai, Yasuhito ; Sajeev, Krishnan ; Nakano, Nobuhiko ; Kitano, Ippei ; Kehelpannala, Wilbert K.V. ; Kato, Ryosuke ; Adachi, Tatsuro ; Malaviarachchi, Sanjeewa P.K. / UHT granulites of the Highland Complex, Sri Lanka I : Geological and petrological background. :: Journal of Mineralogical and Petrological Sciences. 2016 ; 巻 111, 番号 3. pp. 145-156.
@article{f64f86565a0e4c6dbb53326ad07e847c,
title = "UHT granulites of the Highland Complex, Sri Lanka I: Geological and petrological background",
abstract = "The ultrahigh-temperature (UHT) regional metamorphism of Sri Lanka has a significant role in understanding the tectonics and formation of the Gondwana supercontinent. Sri Lanka is specifically important because of its central position in Gondwana, located between southern India, Madagascar and eastern Antarctica. In particular, the Highland Complex has been the focus of several previous studies because of the prominence of metasedimentary rocks that experienced UHT metamorphism. The central Highland Complex of Sri Lanka consists of Spr-bearing Mg-Al rich granulites intercalated with other pelitic, mafic granulites and calc-silicates, which preserve several textural evidences for UHT metamorphism. The calculated peak metamorphic conditions for the Mg-Al rich granulite yielded a temperature range from 910 to 1005 °C at 1.0 GPa, and the pressure varies between 0.9 to 1.2 GPa. The estimated metamorphic P-T conditions and evolution path is in good agreement with previous studies and also to that of similar rock-types from southern Madagascar, southern India and East Antarctica.",
author = "Yasuhito Osanai and Krishnan Sajeev and Nobuhiko Nakano and Ippei Kitano and Kehelpannala, {Wilbert K.V.} and Ryosuke Kato and Tatsuro Adachi and Malaviarachchi, {Sanjeewa P.K.}",
year = "2016",
month = "7",
day = "22",
doi = "10.2465/jmps.151227",
language = "English",
volume = "111",
pages = "145--156",
journal = "Journal of Mineralogical and Petrological Sciences",
issn = "1345-6296",
publisher = "Tohoku University",
number = "3",

}

TY - JOUR

T1 - UHT granulites of the Highland Complex, Sri Lanka I

T2 - Geological and petrological background

AU - Osanai, Yasuhito

AU - Sajeev, Krishnan

AU - Nakano, Nobuhiko

AU - Kitano, Ippei

AU - Kehelpannala, Wilbert K.V.

AU - Kato, Ryosuke

AU - Adachi, Tatsuro

AU - Malaviarachchi, Sanjeewa P.K.

PY - 2016/7/22

Y1 - 2016/7/22

N2 - The ultrahigh-temperature (UHT) regional metamorphism of Sri Lanka has a significant role in understanding the tectonics and formation of the Gondwana supercontinent. Sri Lanka is specifically important because of its central position in Gondwana, located between southern India, Madagascar and eastern Antarctica. In particular, the Highland Complex has been the focus of several previous studies because of the prominence of metasedimentary rocks that experienced UHT metamorphism. The central Highland Complex of Sri Lanka consists of Spr-bearing Mg-Al rich granulites intercalated with other pelitic, mafic granulites and calc-silicates, which preserve several textural evidences for UHT metamorphism. The calculated peak metamorphic conditions for the Mg-Al rich granulite yielded a temperature range from 910 to 1005 °C at 1.0 GPa, and the pressure varies between 0.9 to 1.2 GPa. The estimated metamorphic P-T conditions and evolution path is in good agreement with previous studies and also to that of similar rock-types from southern Madagascar, southern India and East Antarctica.

AB - The ultrahigh-temperature (UHT) regional metamorphism of Sri Lanka has a significant role in understanding the tectonics and formation of the Gondwana supercontinent. Sri Lanka is specifically important because of its central position in Gondwana, located between southern India, Madagascar and eastern Antarctica. In particular, the Highland Complex has been the focus of several previous studies because of the prominence of metasedimentary rocks that experienced UHT metamorphism. The central Highland Complex of Sri Lanka consists of Spr-bearing Mg-Al rich granulites intercalated with other pelitic, mafic granulites and calc-silicates, which preserve several textural evidences for UHT metamorphism. The calculated peak metamorphic conditions for the Mg-Al rich granulite yielded a temperature range from 910 to 1005 °C at 1.0 GPa, and the pressure varies between 0.9 to 1.2 GPa. The estimated metamorphic P-T conditions and evolution path is in good agreement with previous studies and also to that of similar rock-types from southern Madagascar, southern India and East Antarctica.

UR - http://www.scopus.com/inward/record.url?scp=84979284179&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84979284179&partnerID=8YFLogxK

U2 - 10.2465/jmps.151227

DO - 10.2465/jmps.151227

M3 - Article

AN - SCOPUS:84979284179

VL - 111

SP - 145

EP - 156

JO - Journal of Mineralogical and Petrological Sciences

JF - Journal of Mineralogical and Petrological Sciences

SN - 1345-6296

IS - 3

ER -