Analysis for multiple collision metamorphism in the orogenic belts in SE Asia : implication for supercontinent formation

东南亚造山带多次碰撞变质作用分析：对超大陆形成的启示

• 批准号: 20740295
• 负责人: NAKANO Nobuhiko
• 金额: $ 2.5万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20740295/
• 关键词: 変成岩; 東南アジア; 超大陸; 地質学; 大陸衝突

Purpose of this study is to realize P-T-t conditions from the multiple collision zones in SE Asia. Very high-T and -P conditions were obtained from the collision zone between the Indochina and South China cratons, which indicate that deep continental subduction had occurred in this collision zone. The age mostly yielded the Late Permian. On the other hand, no evidences of the subduction were obtained from the Sibumas-Indochina collision zone, and their ages are little younger than that of the Indochina-South China collision. These characteristics strongly imply that there are significant age gap and different collision system in multiple collision zones in SE Asia during the Pangaea formation.

本研究的目的是实现东南亚多个碰撞区的 P-T-t 条件。中南克拉通与华南克拉通碰撞带获得了极高的高温和高压条件，表明该碰撞带曾发生过大陆深俯冲。这个时代主要产生于二叠纪晚期。另一方面，锡布马斯-印度支那碰撞带没有获得俯冲的证据，其年龄比印度支那-华南碰撞带年轻一些。这些特征强烈表明，盘古大陆形成过程中，东南亚多个碰撞带存在显着的年龄差距和不同的碰撞系统。

项目成果

ベトナム縦貫造山帯の衝突型変成作用

越南纵向造山带的碰撞变质作用

• 发表时间: 2008
• 作者: 小山内康人;ほか
• 通讯作者: ほか

Metamorphic processes and geochronological characters of metamorphic rocks from Saniiang Region, SW China

三娘地区变质岩的变质过程及年代学特征

• 发表时间: 2009
• 作者: Yonemura;et.al.
• 通讯作者: et.al.

Crustal melting during the Indochinese continental collision : Evidences from high-pressure granulite in the Song Ma Suture zone,Vietnam.

印度支那大陆碰撞期间的地壳熔融：来自越南松马缝合带高压麻粒岩的证据。

• 发表时间: 2008
• 作者: Nakano;N.;Osanai;Y.;Miyamoto;T.;Owada;M.
• 通讯作者: M.

Garnet + corundum + quartz association and high-density CO2 fluid in aluminous granulite from the Red River Shear zone, northern Vietnam

越南北部红河剪切带铝麻粒岩中石榴石刚玉石英组合和高密度 CO2 流体

• 发表时间: 2008
• 作者: Nakano;et.al.
• 通讯作者: et.al.

タイ・Hua Hin地域に分布する花崗岩質岩の岩石学的研究

泰国华欣地区花岗岩岩石学研究

• 发表时间: 2009
• 作者: 吉本紋;ほか
• 通讯作者: ほか