Geochemical relationships between psammitic-pelitic rocks from the Sanbagawa Metamorphic Belt and Jurassic-Cretaceous accretionary complexes (Southern Chichibu-Nrothern Shimanto Belts)
三波川变质带砂岩-泥质岩与侏罗纪-白垩系增生杂岩(秩父南部-四万十北部带)的地球化学关系
基本信息
- 批准号:09640546
- 负责人:
- 金额:$ 1.73万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1997
- 资助国家:日本
- 起止时间:1997 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Geochemical and petrological studies (meta-)sandstones and (meta-) pelite from the Sanbagawa Metamorphic Belt (chlorite zone), Jurassic Chichibu Belt and Cretaceous Shimanto Belt in Shikoku have been performed to find the non-metamorphic equivalents of the Sanbagawa metamorphic rocks. Following conclusions are obtained.1. In the Chichibu Belt, Early Jurassic sandstones differ from Late Jurassic ones in terms of petrography and geochemistry.2. Cretaceous sandstones in the Shimanto Belt, which are rich in volcanic rock fragments, change in petrological and geochemical featrures during the Turonian-Coniacian, and Can be divided into older KSI (I') and younger KSII (II') units. This classification is applicable from Kyushu to the Akaishi Nountains.3. Metasandstones and metapelites from the Sanbagawa Metamorphic Belt have geochemical affinities with sandstones and shales in the Cretaceous Shimanto Belt. This evidence suggests that most of the sanbagawa metamorphic rocks are deeply underthrust facies of the Cretaceous Shimanto Supergroup.4. the Oboke unil mainly composed of metasandstones is presumed to be the deeply underthrust facies of the Campanian Hiwasa Formation and/or its equivarent on the basis of lithofacies and geochemistry.5. The Beshi unit of the Asemi area can be divided on the basis of chemical features into northern and southern parts of which metasandstones and metapelite are chemically similar to KSII and KSI units in the northern Shimanto Belt, respectively.6. Metamorphosed units on the northern margin of the Chichibu Belt, westernmost Shikoku, can be partly correlative to the Togano unit and the rest with KSI/I' unit in the Cretaceous Shimanto Belt.
对四国三巴川变质带(绿泥石带)、侏罗纪赤部带和白垩纪岛曼都带的变质砂岩和变质泥岩进行了地球化学和岩石学研究,以寻找与三巴川变质岩对应的非变质岩石。得到了以下结论:1.赤赤部带早侏罗世砂岩与晚侏罗世砂岩在岩石学和地球化学上存在差异。石门托带白垩系砂岩富含火山岩碎屑,在都罗纪-科尼亚纪岩石学和地球化学特征发生了变化,可划分为较老的KSI(I‘)和较年轻的KSII(II’)两个单元。这一分类适用于从九州到赤石村。三巴川变质带中的变质砂岩和变泥岩与白垩纪Shimanto带中的砂岩和页岩具有地球化学亲缘关系。这一证据表明,桑巴加瓦变质岩大多为白垩纪Shimanto超群的深冲断相。根据岩相和地球化学特征,推测以变质砂岩为主的鄂博克单元为坎帕尼亚希瓦萨组和/或其对应的深冲断相。根据化学特征,阿西姆地区的贝石单元可划分为北部和南部,其中变质砂岩和变泥岩的化学成分分别与北部岛曼托带的KSII和KSI单元相似。赤部带北缘最西端的四国变质单元与白垩纪岛本带的Togano单元部分对应,其余与Ksi/I‘单元对应。
项目成果
期刊论文数量(30)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
君波和雄: "日本列島のペルム紀-白亜紀砂岩の改訂BI図と後背地の造構場"地質学論集. 57号. 9-18 (2000)
Kazuo Kimami:“日本列岛二叠纪-白垩纪砂岩及腹地构造场修订版BI图”地质杂志第57. 9-18号(2000)。
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- 影响因子:0
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石濱茂崇: "化学組成からみた三波川帯と秩父累帯南帯・四万十帯北帯との関連"地質学論集. 57号. 133-143 (2000)
Shigetaka Ishihama:“从化学成分的角度看三波川带与南部秩父带和北部四万十带的关系”地质评论No.57.133-143(2000)。
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Kazuo Kiminami: "Geochemical contrast between the Sanbagawa psammitic schists (Oboke unit) and the Cretaceous Shimanto sandstonnes in Shikoku, South-west Japan and its geologic significance"The Island Arc. 8. 373-382 (1999)
Kazuo Kiminami:“日本西南部四国的三波川砂岩片岩(大步危单元)与白垩纪四万十砂岩之间的地球化学对比及其地质意义”岛弧。
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小柳津篤: "四国西部の四万十帯における白亜期末-古第三紀初期の砂岩組成"地質学論集. 57号. 29-41 (2000)
Atsushi Koyanaizu:“四国西部四万十带白垩纪晚期和古近纪早期的砂岩组成”,《地质评论》第 57 期,29-41(2000 年)。
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Kazuo KIMINAMI: "Geochemical contrast between Sanbagawa schists and Shimanto."The Island Arc. vol.8. 373-382 (1999)
Kazuo KIMINAMI:“三波川片岩和四万十之间的地球化学对比。”岛弧。
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KIMINAMI Kazuo其他文献
KIMINAMI Kazuo的其他文献
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{{ truncateString('KIMINAMI Kazuo', 18)}}的其他基金
Exhumation ofthe Sanlatgawa metamorphic belt from the viewpoint oftthe Shiananto accietionary complex
从夏南托演化杂岩看三拉嘎瓦变质带的剥露
- 批准号:
17540437 - 财政年份:2005
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Role of tectonic erosion in formation of accretionary prism - examples from the Southern Chichibu Belt and the Shimanto Belt
构造侵蚀在增生棱柱形成中的作用——以南部秩父带和四万十带为例
- 批准号:
14540428 - 财政年份:2002
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Effects of ridge collision on accretionary complex - An example of eastern Shikoku
山脊碰撞对增生杂岩的影响——以四国东部为例
- 批准号:
06640584 - 财政年份:1994
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Effects of ridge subduction along the Japan margin -- an example of the Late Cretaceous-Paleogene
沿日本边缘的山脊俯冲效应——晚白垩世-古近纪的一个例子
- 批准号:
04302022 - 财政年份:1992
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Co-operative Research (A)
Greenstone and terrigeous clastics in the Hidaka Supergroup, northern Hokkaido
北海道北部日高超群的绿岩和陆源碎屑岩
- 批准号:
02640600 - 财政年份:1990
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Sandstone Composition in Mobile Belt : An Example from Japanese Islands
移动带中的砂岩成分:以日本列岛为例
- 批准号:
63302019 - 财政年份:1988
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Co-operative Research (A)
相似海外基金
Tectonostratigraphic relationship between the Northern Chichibu Belt and the Kurosegawa Belt based on illite crystallinity of the Northern Chichibu Belt in eastern Shikoku, Southwest Japan
基于日本西南部四国东部北秩父带伊利石结晶度的北秩父带与黑濑川带的构造地层关系
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24540491 - 财政年份:2012
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Role of tectonic erosion in formation of accretionary prism - examples from the Southern Chichibu Belt and the Shimanto Belt
构造侵蚀在增生棱柱形成中的作用——以南部秩父带和四万十带为例
- 批准号:
14540428 - 财政年份:2002
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Geologic study of oceanic plate components in the northern Chichibu belt
秩父带北部海洋板块成分的地质研究
- 批准号:
12640448 - 财政年份:2000
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Microstructure and metamorphy: phase of argillaceous rocks of Chichibu Belt.
微观结构和变质作用:秩父带泥质岩的相。
- 批准号:
11640444 - 财政年份:1999
- 资助金额:
$ 1.73万 - 项目类别:
Grant-in-Aid for Scientific Research (C)