Granulite facies metamorphism and anatexis in the Hidaka metamorphic belt, Hokkaido, northern Japan

日本北海道日高变质带麻粒岩相变质作用和深熔作用

基本信息

  • 批准号:
    01540662
  • 负责人:
  • 金额:
    $ 0.32万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1989
  • 资助国家:
    日本
  • 起止时间:
    1989 至 1991
  • 项目状态:
    已结题

项目摘要

1) P-T analysis of granulite pacies gneisses in the Hidaka metamorphic belt show 800-850゚C, 7-7.2kb at the peak condition (Dl-stage), 700-750゚C, 5kb during horizontal displacement forming duplex structure (D2) and 600-400゚C, 3kb during the final uplifting movement accompanying tilting with dextral transcurrent slip due to transpression.2)During the peak metamorphic condition, granitic to tonalitic magmas are thought to have form through anatexis of pelitic and psammitic gneisses. Chemical and mineralogical analysis indicate that Opx-Gt-Cd granulites are restites left after partial melting of Gt-Cd gneisses to form granitic melts which occur as veins or pods. In deeper part, larger extents of partial melting might have occurred to give rise large tonalitic plutons in the Hidaka belt.3)Petrological and experimental studies on the genesis and crystallization of tonalitic magma indicate that the magma might have formed at higher temperature than 950゚C and deeper than 8kb, with 4-5% water c … More ontained in the melted rocks, and that the crystallization took place at 5-6kb when the temperature decreased from 900 to 700゚C. The crystallising orger of minerals is Gt-Pl-Opx-Bt-Qz-Cd-Kfs. The stability of Opx is largely controlled with Or contents of the magma.4)Metamorphic enclaves in Miocene Shimanto granites were studied to compare the metamorphic and deformational processes in the Hidaka belt. The high temperature-low pressure regional metamorphism took place in the Shimanto accretionary prism prior to generation of the granites. The regional thermo-dynamic process in accretionary prisms is rather common in the Japanese high temperature terranes such as Hidaka mentioned above and Ryoke metamorphic belt.5)The highest grade gneisses in the Ryoke belt attained at 700゚C at 14km deep. In deeper part, granitic magmas are expected to have been formed through anatexis of gneisses. REE analysis of migmatite and gneisses confirmed the possibility.6)Actual melting processes in natural environments are only observed for rock enclaves within high temperature magmas such as tonalite and basalt. Their examinations argue that rocks melt very heterogeneously, and that the melts are hardly mixed each other owing to high viscosity, . Less
1)日高变质带中麻粒岩类的P-T分析表明,峰期温度为800-850 ℃,峰值温度为7-7.2kb(D_1期)700-750 ℃,水平位移5 kb,形成复式构造(D_2期);(D_2期)600-400 ℃,最后隆升3 kb,伴随着倾斜和压扭作用的右旋走滑。花岗质到英云闪长质岩浆被认为是通过泥质和砂质片麻岩的深熔作用形成的。化学和矿物学分析表明,Opx-Gt-Cd麻粒岩是Gt-Cd片麻岩部分熔融形成花岗质熔体后残留的残橄岩,呈脉状或豆荚状产出。3)对英云闪长质岩浆的成因和结晶作用的岩石学和实验研究表明,该岩浆形成的温度可能高于950 ℃,形成的深度可能大于8 kb,含水量为4-5%。 ...更多信息 当温度从900 ℃降至700 ℃时,结晶发生在5- 6 kb处。矿物的结晶组织为Gt-Pl-Opx-Bt-Qz-Cd-Kfs。Opx的稳定性在很大程度上受岩浆中Or含量的控制。4)研究了中新世四万十花岗岩中的变质包体,以对比日高带的变质和变形过程。在花岗岩形成之前,四万十增生棱柱体中发生了高温低压区域变质作用。增生棱柱体中的区域热动力过程在日高等日本高温岩体和辽辽变质带中相当普遍。5)辽辽变质带中的最高级片麻岩在700 ℃时达到14 km深。在深部,花岗质岩浆可能是通过片麻岩的深熔作用形成的。混合岩和片麻岩的稀土元素分析证实了这种可能性。6)只有英云闪长岩和玄武岩等高温岩浆中的岩石包体才能观察到自然环境中的实际熔融过程。他们的研究表明,岩石的熔化是非常不均匀的,而且由于粘度高,熔化物很难相互混合。少

项目成果

期刊论文数量(22)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
T. Shimura: "Genesis of the lower crustal garnet-orth-pyroxene tonalite (S-type) of the Hidaka metamorphic belt, northern Japan" Trans. Roy. Soc. Edinburgh. 83. (1992)
T. Shimura:“日本北部日高变质带下地壳石榴石-正辉石英闪长岩(S 型)的成因” Trans。
  • DOI:
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    0
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M. Komatsu: "P-T-D path of the Hidaka metamorphic belt" Earth Monthly. 11. 239-244 (1989)
M. Komatsu:“日高变质带的 P-T-D 路径”《地球月刊》。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
M. Komatsu: "Melting of granite and pelitic rock enclaves in basalt" Earth Monthly.
M. Komatsu:“玄武岩中花岗岩和泥质岩飞地的熔化”《地球月刊》。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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柚原 雅樹,川辺 岩夫,小松 正幸: "伊那領家帯の花崗岩・変成岩類のREE:花崗岩化作用の検討" 月刊地球.
Masaki Yuzuhara、Iwao Kawabe、Masayuki Komatsu:“伊那良克带花岗岩和变质岩的稀土元素:花岗岩化研究”《地球月刊》。
  • DOI:
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  • 期刊:
  • 影响因子:
    0
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  • 通讯作者:
小松 正幸: "千島海盤の拡大と日高変成帯の構造運動" 月刊地球. 12. 501-506 (1990)
小松正之:“千岛盆地的扩张和日高变质带的构造运动”月刊地球。 12. 501-506 (1990)
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    0
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KOMATSU Masayuki其他文献

KOMATSU Masayuki的其他文献

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{{ truncateString('KOMATSU Masayuki', 18)}}的其他基金

Economic Analysis of the Fisheries Policies for Restoration after the Tohoku Great Earth Quake and Tsunami
东北大地震和海啸后恢复渔业政策的经济分析
  • 批准号:
    24580317
  • 财政年份:
    2012
  • 资助金额:
    $ 0.32万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Tectonic relationships between ductile shear zone and brittle fault zone in the upper crust
上地壳韧性剪切带与脆性断裂带的构造关系
  • 批准号:
    11640455
  • 财政年份:
    1999
  • 资助金额:
    $ 0.32万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
日本列島の基盤構造と活断層の形成位置との関係に関する基礎的研究
日本列岛基底构造与活动断层形成位置关系的基础研究
  • 批准号:
    09640548
  • 财政年份:
    1997
  • 资助金额:
    $ 0.32万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
FORMATIVE PROCESSES AND EXHUMATION TECTONICS OF HIGH-TEMPERATURE METAMORPHIC BELTS IN ISLAND ARCS
岛弧高温变质带的形成过程与折返构造
  • 批准号:
    06302029
  • 财政年份:
    1994
  • 资助金额:
    $ 0.32万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
The Process of formation of extremely high temperature zones in the deep crust beneath the Miocene Setouchi volcanic province
中新世濑户内火山省地壳深部极高温区的形成过程
  • 批准号:
    05402021
  • 财政年份:
    1993
  • 资助金额:
    $ 0.32万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (A)
Petrology and tectonics of Hidaka, Kamuikotan and Tokoto belts in Hokkaido, Japan
日本北海道日高带、神威古丹带和东琴带的岩石学和构造
  • 批准号:
    60302031
  • 财政年份:
    1985
  • 资助金额:
    $ 0.32万
  • 项目类别:
    Grant-in-Aid for Co-operative Research (A)

相似海外基金

The Sistan Suture Zone, eastern Iran: the exhumation history of oceanic HP/LT rocks and the geological significance of presumed granulite-facies mélange rocks.
伊朗东部锡斯坦缝合带:大洋高压/低温岩石的折返历史和推测的麻粒岩相混杂岩的地质意义。
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    2015
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Application of Boron Isotopes to Constrain the Depositional Environment of the Precursors to Proterozoic Granulite-Facies Borosilicate Paragneisses, Larsemann Hills, Antarctica
应用硼同位素约束南极拉尔斯曼山元古界麻粒岩相硼硅酸盐副片麻岩前驱体的沉积环境
  • 批准号:
    0837980
  • 财政年份:
    2009
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    $ 0.32万
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Boron in Antarctic granulite-facies rocks: under what conditions is boron retained in the middle crust?
南极麻粒岩相岩石中的硼:硼在什么条件下保留在中地壳中?
  • 批准号:
    0228842
  • 财政年份:
    2003
  • 资助金额:
    $ 0.32万
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    Standard Grant
Partial melting. granulite facies metamorphism and the evolution of the continental crust
部分熔化。
  • 批准号:
    ARC : DP0209461
  • 财政年份:
    2002
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Beryllium in Antarctic Ultrahigh-Temperature Granulite-Facies Rocks and its Role in Partial Melting of the Lower Continental Crust
南极超高温麻粒岩相岩石中的铍及其在下陆壳部分熔融中的作用
  • 批准号:
    0087235
  • 财政年份:
    2001
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    $ 0.32万
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Phase equilibria and thermodynamic, properties of granulite facies minerals.
麻粒岩相矿物的相平衡和热力学性质。
  • 批准号:
    11640481
  • 财政年份:
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Beryllium in Granulite-Facies Pegmatites in Archean Napier Complex, Antarctica
南极洲太古代纳皮尔杂岩中麻粒岩相伟晶岩中的铍
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    1998
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COLLABORATIVE RESEARCH: Tectonothermal Evolution During Collisional Orogenesis: Blueschist to Granulite Facies Metamorphism in the Kigluaik Mountains, Alaska
合作研究:碰撞造山作用期间的构造热演化:阿拉斯加基格鲁艾克山脉的蓝片岩到麻粒岩相变质作用
  • 批准号:
    9118012
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COLLABORATIVE RESEARCH: Tectonothermal Evolution during Collisional Orogenesis: Blueschist to Granulite facies Metamorphism in the Kigluaik Mountains, Alaska
合作研究:碰撞造山作用期间的构造热演化:阿拉斯加基格鲁艾克山脉的蓝片岩到麻粒岩相变质作用
  • 批准号:
    9118394
  • 财政年份:
    1992
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    $ 0.32万
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U.S.-Australia Cooperative Research: Fluids in Amphibolite-to Granulite-Facies Lode Gold Deposits
美国-澳大利亚合作研究:角闪岩至麻粒岩相矿脉金矿中的流体
  • 批准号:
    9015198
  • 财政年份:
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