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.

地震破裂在孕震带内的传播过程在各个尺度上都是复杂的，但缺乏足够的地质数据阻碍了对实际破裂和滑动过程的详细研究。在断裂带中以简单脉状或注入网络形式发现的与断层有关的假玄武岩被广泛认为记录了“化石”地震，即在脆性-半韧性和韧性状态下沿断层发生的地震滑动事件。假硅质岩是少数几种记录了从脆性到韧性状态的古断层地震性质的材料之一。本文列举了在地壳浅-深脆-韧性状态下同一剪切带中C-铂和M-铂共存的实例。在此期间发生了3次大地震：集集(台湾)地震、鸟取县西武地震和中昆仑(中国)地震。我们还开展了实地考察，了解地震断裂、活动断裂和发震构造之间的关系。与该项目有关的37篇论文已在国际和国内期刊上发表，并已列入发表名单。

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。

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。

Toru Ouchi, Aiming Lin, Allen Chen and Tadashi Maruyama: "The 1999 Chi-Chi (Taiwan) earthquake : earthquake fault and strong motions"Bulletin of the Seismological Society of America. 91. 966-976 (2001)

Toru Ouchi、Aiming Lin、Allen Chen 和 Tadashi Maruyama：“1999 年 Chi-Chi（台湾）地震：地震断层和强烈运动”美国地震学会通报。

Kobayashi Kenta, Tatsuro Fukuchi, Noriko Hasebe, and Aiming Lin, et al.: "Occurrence of the marginal fracture zone in the 1800 m drill core penetrating throughout the Nojima fault"Journal of Geological Society of Japan. 105. XIX-XX (1999)

小林健太、福地龙郎、长谷部纪子、林爱明等：“贯穿野岛断层的1800m钻芯中边缘断裂带的发生”，日本地质学会学报。

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。