Accretion and uplifting of deep accretionary complex

深部增生杂岩的增生和抬升

• 批准号: 12640446
• 负责人: SAKAKIBARA Masayuki
• 金额: $ 2.56万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12640446/
• 关键词: deep accretionary complex; Sanbagawa belt in central and western Shikoku; oceanic plate stratigraphy; sequence of protolith; recumbent fold; nappe structure; fluid-rock interaction; shuffled card structure; 四国中西部; 三波川帯; 電気石; 流体; 物質移動; 付加・上昇テク

In this research project, we have succeeded in accretion and uplifiting of deepest part of accretionary complex. The results are as follows.(1) Protolith of the high-P/T Sanbagawa metamorphic rocks can be divided into 22 rock types in the central and western Shikoku, Japan.(2) On the basis of a sequence of protohlith, the oceanic plate stratigraphy can be distinguished in the Sanbagawa metamorphic rocks in the central and western Shikoku.(3) The Giant recumbent fold of the Sanbagawa metamorphic belt in the central Shikoku by Banno et al.(1978) can be confirmed based on the reconstructed oceanic plate stratigraphy.(4) The Sanbagawa metamorphic rocks are characterized by "Shuffled card structure" showing injection of pelitic schists into the sequences originated from the oceanic plate stratigraphy.(5) In the Sanbagawa metamorpphic rocks as a deepest part of accretionary complex, fluid released by dehydration pass through nappe boundaries and regionally gives addition of Boron and oxygen isotopic alterations.

在本研究项目中，我们成功地实现了增生杂岩深部的增生和隆升。结果如下。(1)日本四国中西部高P/T三坝川变质岩的原岩可分为22种岩石类型。(2)根据原岩序列，四国中西部的三八川变质岩中可以区分出大洋板块地层。(3)四国中部三八川变质带的巨型平卧褶皱。（1978）的观点可以在重建大洋板块地层学的基础上得到证实。(4)三坝川变质岩以“洗牌构造”为特征，显示泥质片岩注入到源自大洋板块地层的层序中。(5)在作为增生杂岩最深处的三坝川变质岩中，脱水释放的流体穿过推覆体边界，并在区域上增加了硼和氧同位素蚀变。

项目成果

榊原正幸, 井内美郎, 奈良正和: "2001年芸予地震による愛媛県東予市周辺の埋立地における液状化現象"地質学雑誌. 108. VIII-IX (2002)

榊原雅之、井之内义郎、奈良正和：“2001年艺予地震导致爱媛县东阳市周边开垦土地的液化现象”地质杂志108. VIII-IX (2002)。

Masayuki Sakakibara, Yoshiro Inouchi and Masakazu Inouchi: "Liquefaction of reclaimed land in Toyo City, Ehime Prefecture, by the 2001 Geiyo earthquake"The Journal of the Geological Society of Japan. Vol.108-6. XIII-XIV

Masayuki Sakakibara、Yoshiro Inouchi 和 Masakazu Inouchi：“2001 年艺叶地震导致爱媛县东洋市开垦土地液化”，日本地质学会杂志。

榊原正幸, 井内美郎, 奈良正和: "2001年芸予地震による愛媛県東予市周辺の埋立地における液状化現象"地質学雑誌. 108・6. 8-11 (2002)

榊原雅之、井内义郎、奈良正一：“2001年艺予地震导致的爱媛县东洋市周边填海土地的液化现象”地质杂志108・6（2002年）。

Sakakibara, M., Kretz, R., Kawasaki, T.: "Corona micro structures between olivine and plagioclase of the Chenauy gabbro in the Grenville Province, Ontario"Journal of the Geological Society of Japan. 107. IX-X (2001)

Sakakibara, M.、Kretz, R.、Kawasaki, T.：“安大略省格伦维尔省 Chenauy 辉长岩橄榄石和斜长石之间的电晕微结构”日本地质学会杂志。

Masayuki Sakakibara, Rulf Kretz and Toshisuke Kawasaki: "Corona microstructures between olivine andplagioclase of the Chenaux gabbro in the Grenville Province, Ontario"The Journal of the Geological Society of Japan. Vol.107-5. IX-X

Masayuki Sakakibara、Rulf Kretz 和 Toshisuke Kawasaki：“安大略省格伦维尔省 Chenaux 辉长岩橄榄石和斜长石之间的电晕微结构”日本地质学会杂志。