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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 1 - 19 (19page)
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Microstructures developed in the fault gouge zone, Yangbuk, Gyeongju city, Korea, were characterized with emphasis on distribution of remaining grains. Based on XRD analysis, the fault gouges consist of quartz, feldspar and clay minerals composed of abundant illite and chlorite, with vein minerals including laumontite and pyrite. As the fractal dimension (D-value) of grains gradually increases, the pore space in the fault gouge becomes smaller, causing the change in microstructures. Quartz and feldspar exerted a different influence on the development of microstructures in the fault gouge zone, derived from essential reactivity inherent between the two minerals during multiple faulting. Quartz grains intensively suffered grain size reduction while the content and size of coarse grains decreased. Feldspar grains tend to influence the formation of clay minerals made up for the matrix. Although large quartz grains highly fractured with abrasions caused the grain size reduction in the gouge zone during early fault activities, fine-grained quartz in the clay-rich matrix easily remained due to the reduction in friction resulted from clay minerals. On the other hand, feldspar grains underwent more abrasion and dissolution, leading to an increase in the amount of clay minerals newly formed during fault activities. Changes in microstructures were accompanied by precipitation of the secondary minerals during multiple fault activities in connection with fracturing of main rock-forming minerals such as quartz and feldspar derived from the host rock.
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참고문헌 (60)
참고문헌 신청
Balsamo, F. / 2010 / Structural and petrophysical evolution of extensional fault zones in low-porosity, poorly lithified sandstones of the Barreiras Formation, NE Brazil / Journal of Structural Geology 32:1806~1826
Berg, S.S. / 2005 / Controls on damage zone asymmetry of a normal fault zone: outcrop analyses of a segment of the Moab Fault, SE Utah / Journal of Structural Geology 27:1803~1822
Billi, A. / 2005 / Grain size distribution and thickness of breccia and gouge zones from thin (<1 m) strike-slip fault cores in limestone / Journal of Structural Geology 27:1823~1837
Billi, A. / 2003 / Particle size distributions of fault rocks and fault transpression: are they related? / Terra Nova 15:61~66
Blenkinsop, T. G. / 1991 / Cataclasis and processes of particle size reduction / Pure and Applied Geophysics 136:59~86
Berg, S.S. / 2005 / Controls on damage zone asymmetry of a normal fault zone: outcrop analyses of a segment of the Moab Fault, SE Utah / Journal of Structural Geology 27:1803~1822
Billi, A. / 2005 / Grain size distribution and thickness of breccia and gouge zones from thin (<1 m) strike-slip fault cores in limestone / Journal of Structural Geology 27:1823~1837
Billi, A. / 2003 / Particle size distributions of fault rocks and fault transpression: are they related? / Terra Nova 15:61~66
Blenkinsop, T. G. / 1991 / Cataclasis and processes of particle size reduction / Pure and Applied Geophysics 136:59~86
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