Crustal anatexis and formation of two types of granitic magmas in the Kontum massif, central Vietnam: Implications for magma processes in collision zones

M. Owada, Yasuhito Osanai, Nobuhiko Nakano, T. Matsushita, Ngoc Nam Tran Ngoc Nam, T. Tsunogae, T. Toyoshima, Pham Binh, H. Kagami

研究成果: ジャーナルへの寄稿記事

34 引用 (Scopus)

抄録

Asia grew in the Late Permian by the collision of a number of micro-continents. Syn- to post-collisional magmatism occurred along the continental collision zones . In this study, we report two types of granitic rocks, garnet granite (Grt granite) and orthopyroxene granite (Opx granite), from the Kontum massif, central Vietnam, which is situated on the continental collision zone between the South China and Indochina cratons. These granitic rocks were formed at ca. 250 Ma when high-temperature (HT) and ultrahigh-temperature (UHT) metamorphism took place in the same zone. Based on the petrological and geochemical features compared with previously reported experimental results, garnet-bearing granite is derived from pelitic gneisses by partial melting, whereas orthopyroxene-bearing granite is produced by the partial melting of garnet-bearing mafic granulites. We inferred that a significantly high-geothermal gradient is required to produce Vietnamese granitic magmatism and related HT to UHT metamorphism. This geotherm may be attributed to upwelling mantle plume beneath the Kontum massif during the Late Permian.

元の言語英語
ページ(範囲)428-437
ページ数10
ジャーナルGondwana Research
12
発行部数4
DOI
出版物ステータス出版済み - 11 1 2007

Fingerprint

collision zone
anatexis
granite
magma
ultrahigh temperature metamorphism
garnet
continental collision
orthopyroxene
partial melting
magmatism
Permian
geothermal gradient
mantle plume
rock
craton
upwelling
collision

All Science Journal Classification (ASJC) codes

  • Geology

これを引用

Crustal anatexis and formation of two types of granitic magmas in the Kontum massif, central Vietnam : Implications for magma processes in collision zones. / Owada, M.; Osanai, Yasuhito; Nakano, Nobuhiko; Matsushita, T.; Tran Ngoc Nam, Ngoc Nam; Tsunogae, T.; Toyoshima, T.; Binh, Pham; Kagami, H.

:: Gondwana Research, 巻 12, 番号 4, 01.11.2007, p. 428-437.

研究成果: ジャーナルへの寄稿記事

Owada, M. ; Osanai, Yasuhito ; Nakano, Nobuhiko ; Matsushita, T. ; Tran Ngoc Nam, Ngoc Nam ; Tsunogae, T. ; Toyoshima, T. ; Binh, Pham ; Kagami, H. / Crustal anatexis and formation of two types of granitic magmas in the Kontum massif, central Vietnam : Implications for magma processes in collision zones. :: Gondwana Research. 2007 ; 巻 12, 番号 4. pp. 428-437.
@article{455e1ac69b25457681d6bb2a6f9d9c6a,
title = "Crustal anatexis and formation of two types of granitic magmas in the Kontum massif, central Vietnam: Implications for magma processes in collision zones",
abstract = "Asia grew in the Late Permian by the collision of a number of micro-continents. Syn- to post-collisional magmatism occurred along the continental collision zones . In this study, we report two types of granitic rocks, garnet granite (Grt granite) and orthopyroxene granite (Opx granite), from the Kontum massif, central Vietnam, which is situated on the continental collision zone between the South China and Indochina cratons. These granitic rocks were formed at ca. 250 Ma when high-temperature (HT) and ultrahigh-temperature (UHT) metamorphism took place in the same zone. Based on the petrological and geochemical features compared with previously reported experimental results, garnet-bearing granite is derived from pelitic gneisses by partial melting, whereas orthopyroxene-bearing granite is produced by the partial melting of garnet-bearing mafic granulites. We inferred that a significantly high-geothermal gradient is required to produce Vietnamese granitic magmatism and related HT to UHT metamorphism. This geotherm may be attributed to upwelling mantle plume beneath the Kontum massif during the Late Permian.",
author = "M. Owada and Yasuhito Osanai and Nobuhiko Nakano and T. Matsushita and {Tran Ngoc Nam}, {Ngoc Nam} and T. Tsunogae and T. Toyoshima and Pham Binh and H. Kagami",
year = "2007",
month = "11",
day = "1",
doi = "10.1016/j.gr.2006.11.001",
language = "English",
volume = "12",
pages = "428--437",
journal = "Gondwana Research",
issn = "1342-937X",
publisher = "Elsevier Inc.",
number = "4",

}

TY - JOUR

T1 - Crustal anatexis and formation of two types of granitic magmas in the Kontum massif, central Vietnam

T2 - Implications for magma processes in collision zones

AU - Owada, M.

AU - Osanai, Yasuhito

AU - Nakano, Nobuhiko

AU - Matsushita, T.

AU - Tran Ngoc Nam, Ngoc Nam

AU - Tsunogae, T.

AU - Toyoshima, T.

AU - Binh, Pham

AU - Kagami, H.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - Asia grew in the Late Permian by the collision of a number of micro-continents. Syn- to post-collisional magmatism occurred along the continental collision zones . In this study, we report two types of granitic rocks, garnet granite (Grt granite) and orthopyroxene granite (Opx granite), from the Kontum massif, central Vietnam, which is situated on the continental collision zone between the South China and Indochina cratons. These granitic rocks were formed at ca. 250 Ma when high-temperature (HT) and ultrahigh-temperature (UHT) metamorphism took place in the same zone. Based on the petrological and geochemical features compared with previously reported experimental results, garnet-bearing granite is derived from pelitic gneisses by partial melting, whereas orthopyroxene-bearing granite is produced by the partial melting of garnet-bearing mafic granulites. We inferred that a significantly high-geothermal gradient is required to produce Vietnamese granitic magmatism and related HT to UHT metamorphism. This geotherm may be attributed to upwelling mantle plume beneath the Kontum massif during the Late Permian.

AB - Asia grew in the Late Permian by the collision of a number of micro-continents. Syn- to post-collisional magmatism occurred along the continental collision zones . In this study, we report two types of granitic rocks, garnet granite (Grt granite) and orthopyroxene granite (Opx granite), from the Kontum massif, central Vietnam, which is situated on the continental collision zone between the South China and Indochina cratons. These granitic rocks were formed at ca. 250 Ma when high-temperature (HT) and ultrahigh-temperature (UHT) metamorphism took place in the same zone. Based on the petrological and geochemical features compared with previously reported experimental results, garnet-bearing granite is derived from pelitic gneisses by partial melting, whereas orthopyroxene-bearing granite is produced by the partial melting of garnet-bearing mafic granulites. We inferred that a significantly high-geothermal gradient is required to produce Vietnamese granitic magmatism and related HT to UHT metamorphism. This geotherm may be attributed to upwelling mantle plume beneath the Kontum massif during the Late Permian.

UR - http://www.scopus.com/inward/record.url?scp=35548978580&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=35548978580&partnerID=8YFLogxK

U2 - 10.1016/j.gr.2006.11.001

DO - 10.1016/j.gr.2006.11.001

M3 - Article

AN - SCOPUS:35548978580

VL - 12

SP - 428

EP - 437

JO - Gondwana Research

JF - Gondwana Research

SN - 1342-937X

IS - 4

ER -