Formation mechanism of fault rocks in ductile-brittle regime

韧脆态断层岩的形成机制

• 批准号: 12440138
• 负责人: LIN Aiming
• 金额: $ 7.23万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12440138/
• 关键词: brittle; ductile; fault rock; seismic fault; frictional melting; pseudo tachylyte; active fault; 1999 Chi-chi earthquake; 断層岩; 断層破砕帯; S-Cカタクレーサイト; 脆性変形

The process of earthquake rupture propagation within a seismogenic zone is inherently complex at all scales, but a lack of adequate geologic data inhibits any detailed investigations into the actual process of rupture and slip. Fault-related pseudotachylytes found as simple veins or injected networks in fault zones are widely considered to record "fossil" earthquakes, i.e. events of seismic slip along faults within brittle to semi-ductile and ductile regimes. Pseudotachylyte is one of only a few materials that record the seismic nature of ancient faults from the brittle to ductile regimes. This study presents some examples of the coexistence of C-Pt and M-Pt generated in the same shear zone in the brittle-ductile regimes from shallow-deep crust.During this study period, there are 3 large earthquake occurred : Chi-Chi (Taiwan) earthquake, Totori-ken Seibu earthquake, and Central Kunlun (China) earthquake. We also carried out the field investigations to understand the relationship between the seismic fault, active fault, and seismogenic structures.37 papers related to this project have been published in international and domestic journals, which have been shown in the publication list.

地震带内地震破裂传播的过程在所有尺度上都是复杂的，但缺乏足够的地质数据阻碍了对破裂和滑移实际过程的任何详细研究。在断层带中以简单脉体或注入网络形式发现的与断层相关的假速晶石被广泛认为记录了“化石”地震，即在脆性至半韧性和延性区域内沿断层发生地震滑移的事件。伪速晶石是记录古代断层从脆性到延性状态的地震性质的少数材料之一。本研究提供了一些在浅-深地壳脆性-韧性区域中同一剪切带中产生的C-Pt和M-Pt共存的例子。在本研究期间，发生了3次大地震：Chi-Chi (台湾）地震、鸟取县西武地震和中昆仑（中国）地震。我们还开展了实地调查，了解地震断层、活动断层和发震构造之间的关系。在国际国内期刊上发表了与该项目相关的论文37篇，这些论文已列在出版物列表中。

项目成果

Aiming Lin, Toru Ouchi, Allen Chen, Tadashi Maruyama: "Co-seismic displacements, folding and shortening structures along the Chelungpu surface rupture zone occurred during the 1999 Chi-Chi (Taiwan)earthquake"Tectonophvsics. 330. 225-244 (2001)

Aiming Lin、Toru Ouchi、Allen Chen、Tadashi Maruyama：“1999 年集集（台湾）地震期间沿车笼埔地表破裂带发生的同震位移、折叠和缩短结构”构造运动学。

A.Lin et al: "Comparative study of the cataclastic fanlt rocks found in cores and outcrops along the Nojima in Awaji II Island, Japan"The Island Arc. 10,3/4(in press). (2001)

A.Lin 等人：“日本淡路二岛野岛岩心和露头中发现的碎裂扇岩的比较研究”岛弧。

林愛明,狩野謙一: "基盤岩の地質構造と変位地形から推定される活断層の活動史-大宮山脈を横切った飯田-松川断層と境峠断層を例に"月刊地球. 号外No.31. 34-45 (2000)

林爱明、嘉纳宪一：“从基岩地质结构和位移地形推测活动断层活动的历史——以横穿大宫山脉的饭田松川断层和坂头断层为例”月刊特刊第31号34-。 45 (2000)

Shinichi Uda, Aiming Lin and Keiji Takemura: "Crack-filled clays and weathered cracks in the DPRI 1800 m core near the Nojima fault, Japan : evidence for deep surface-water circulation near an active fault"The Island Arc. 10. 439-446 (2001)

Shinichi Uda、Aiming Lin 和 Keiji Takemura：“日本野岛断层附近 DPRI 1800 m 核心中的裂缝填充粘土和风化裂缝：活动断层附近深层地表水循环的证据”岛弧。

Aiming Lin, Ken-ichi Kano, and Tadashi Maruyama: "Liquefaction and damages caused by the 2000 Western Tottori Earthquake, western Japan"Structural Geology. 44. 1-4 (2000)

Aiming Lin、Ken-ichi Kano 和 Tadashi Maruyama：“2000 年日本西部鸟取县西部地震造成的液化和损害”构造地质学。