Cathodoluminescence and fluid inclusion analyses of mineral veins within major thrusts in the Shimanto accretionary complex: evidence of hydraulic fracturing during thrusting

Hideki Mukoyoshi; Tetsuro Hirono; Kotaro Sekine; Noriyoshi Tsuchiya; Wonn Soh

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Cathodoluminescence and fluid inclusion analyses of mineral veins within major thrusts in the Shimanto accretionary complex: evidence of hydraulic fracturing during thrusting

机译：Shimanto增生复合物中主逆冲中矿物脉的阴极发光和流体包裹体分析：逆冲过程中水力压裂的证据

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To elucidate fluid-rock interaction in a seismogenic zone along a plate-subduction boundary, we investigated the occurrence of mineral veins within the major thrusts in the Shimanto accretionary complex and examined their microstructures using a cathodoluminescence technique. We found discriminative structures, for example, a jigsaw-puzzle structure, within the quartz veins in the thrusts, which could indicate that hydraulic fracturing occurred by abnormal pore-fluid pressure during thrusting. Pore pressure values, estimated quantitatively by fluid inclusion analyses, were 3-27 MPa higher than the surrounding parts, which may be direct evidence of abnormal pore-fluid pressure. High pore-fluid pressures and subsequent hydraulic fracturing may play an important role within major thrusts along a plate-subduction boundary.

机译：为了阐明沿板片俯冲边界的地震带中的流体-岩石相互作用，我们研究了Shimanto增生复合物中主冲断层中矿脉的发生，并使用阴极发光技术检查了它们的微观结构。我们在推力的石英脉内发现了判别性结构，例如拼图-拼图结构，这可能表明，在推力过程中，异常的孔隙流体压力导致了水力压裂。通过流体包裹体分析定量估算的孔隙压力值比周围的部分高3-27 MPa，这可能是异常的孔隙流体压力的直接证据。高孔隙液压力和随后的水力压裂可能在沿板片俯冲边界的大推力中起重要作用。

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《Earth, planets and space: EPS》 |2007年第8期|共6页
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Hideki Mukoyoshi; Tetsuro Hirono; Kotaro Sekine; Noriyoshi Tsuchiya; Wonn Soh;
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1. Cathodoluminescence and fluid inclusion analyses of mineral veins within major thrusts in the Shimanto accretionary complex: evidence of hydraulic fracturing during thrusting [J] . Mukoyoshi H, Hirono T, Sekine K, Earth, planets and space: EPS . 2007,第8期

机译：Shimanto增生复合物中主逆冲中矿物脉的阴极发光和流体包裹体分析：逆冲过程中水力压裂的证据
2. Deformation and fluid flow of a major out-of-sequence thrust located at seismogenic depth in an accretionary complex: Nobeoka Thrust in the Shimanto Belt, Kyushu, Japan [J] . Hideki Kondo, Gaku Kimura, Hideki Masago, Tectonics . 2005,第6期

机译：位于增生复合体中发震深度的主要乱序冲断的变形和流体流动：日本九州四万十地带的延冈冲断
3. Postseismic fluid discharge chemically recorded in altered pseudotachylyte discovered from an ancient megasplay fault: an example from the Nobeoka Thrust in the Shimanto accretionary complex, SW Japan [J] . Ryota Hasegawa, Asuka Yamaguchi, Rina Fukuchi, Progress in Earth and Planetary Science . 2019,第1期

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4. Au deposition and remobilization in the Muruntau "Central" quartz veins: Evidence from SEM, cathodoluminescence and fluid inclusion data [C] . U, A. A. Kremenetsky, G. Irmer, Biennial SGA-SEG meeting . 2001

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7. Cathodoluminescence and fluid inclusion analyses of mineral veins within major thrusts in the Shimanto accretionary complex: evidence of hydraulic fracturing during thrusting [O] . 2007

机译：Shimanto增生复合物中主逆冲中矿物脉的阴极发光和流体包裹体分析：逆冲过程中水力压裂的证据

Cathodoluminescence and fluid inclusion analyses of mineral veins within major thrusts in the Shimanto accretionary complex: evidence of hydraulic fracturing during thrusting

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