- Open Access
Development of the Hatagawa Fault Zone clarified by geological and geochronological studies
Earth, Planets and Space volume 54, pages1095–1102(2002)
The occurrence of mylonite and cataclasite, mineral assemblages of cataclasite, and the K-Ar ages of surrounding granitic rocks and dikes were studied to examine the possibility that the Hatagawa Fault Zone (HFZ), NE Japan was experienced under the conditions of the brittle-plastic transition. The Hatagawa Fault Zone is divided into three structural settings: mylonite zones with a sinistral sense of shear and a maximum thickness of 1 km, a cataclasite zone with a maximum thickness of about 100 m, and locally and sporadically developed small-scale shear zones. Occurrence of epidote and chlorite, lack of montmorillonite in cataclasite, and the coexistence of cataclasite and limestone mylonite suggest that the cataclasite was deformed at temperatures higher than 220°C. Crush zones in the mylonite near the cataclasite zone were recognized in one outcrop; they have a structure concordant with the surrounding mylonite and some fragments in them are dragged plastically. Granodiorite porphyry dikes near the HFZ intruding into cataclasite and mylonite with a sinistral sense of shear exhibit no deformational features. K-Ar ages of hornblende from host granitic rocks and from one granodiorite porphyry dike are 126 ± 6 to 95.7 ± 4.8 and 98.1 ± 2.5 Ma, respectively. These indicate that the fault activity gradually changed from mylonitization to cataclasis within 28 m.y., and suggest that the HFZ underwent a brittle-plastic transition during its activity.
Dodson, M. H. and E. McClelland-Brown, Isotopic and palaeomagnetic evidence for rates of cooling, uplift and erosion, Geol. Soc. London Mem., 10, 315–325, 1985.
Geological Survey of Japan, Geological map of Japan, 1:1,000,000 (3rd Ed.), 1992.
Henley, R. W. and A. J. Ellis, Geothermal systems ancient and modern: a geochemical review, Earth Sci. Rev., 19, 1–50, 1983.
Iio, Y., Y. Kobayashi, and T. Tada., Large earthquakes initiate by the acceleration of slips on the downward extensions of seismogenic faults, Proc. Int. Symp. on Slip and Flow Processes in and below the Seismogenic Region, 407–411, 2001.
Kubo, K. and T. Yamamoto, Cretaceous intrusive rocks of Haramachi district, eastern margin of Abukuma Mountains—Petrography and K-Ar age, J. Geol. Soc. Japan, 96, 731–743, 1990 (in Japanese with English abstract).
Kubo, K., Y. Yanagisawa, T. Yoshioka, T. Yamamoto, and F. Takizawa, Geology of the Haramachi and Omika district with Geological Sheet Map at 1:50,000, Geological Survey of Japan, 155p., 1990 (in Japanese with English abstract).
Linde, A. T., K. Suyehiro, S. Miura, I. S. Sacks, and A. Takagi, Episodic aseismic earthquake precursors, Nature, 334, 513–515, 1988.
Otsuki, K. and M. Ehiro, Cretaceous left-lateral faulting in Northeast Japan and its bearing on the origin of geologic structure of Japan, J. Geol. Soc. Japan, 98, 1097–1112, 1992 (in Japanese with English abstract).
Rutter, E. H., On the nomenclature of mode of failure transitions in rocks, Tectonophys., 122, 381–387, 1986.
Schmid, S. M., Microfabric studies as indicators of deformation mechanisms and flow laws operative in mountain building, in Mountain Building Processes, edited by K. Hsu, pp. 95–110, Academic Press, 1982.
Sendo, T., On the granitic rocks of Mt. Otakine and its adjacent districts in the Abukuma massif, Japan, Sci. Rep. Tohoku Univ. Third Series, 6, 57–167, 1958.
Shibata, K. and S. Uchiumi, K-Ar ages on hornblendes from granitic rocks in the southern Abukuma Plateau, J. Min., Pet. and Eco. Geol., 78, 405–410, 1983 (in Japanese with English abstract).
Shigematsu, N., Dynamic recrystallization in deformed plagioclase during progressive shear deformation, Tectonophys., 305, 437–452, 1999.
Shigematsu, N. and H. Tanaka, Dislocation creep of fine-grained recrystallized plagioclase under low temperature conditions, J. Struct. Geol., 22, 65–79, 2000.
Shigematsu, N. and H. Yamagishi, Quartz microstructures and deformation conditions in the eastern Hatagawa shear zone, NE Japan, Island Arc, 11, 45–60, 2002.
Shigematsu, N., K. Fujimoto, T. Ohtani, T. Tomita, and K. Omura, Plastic deformation and fracturing: a case study in the Hatagawa Fault Zone, Proc. Int. Symp. on Slip and Flow Processes in and below the Seismogenic Region, 265–272, 2001.
Sibson, R. H., Earthquake faulting as a structural process, J. Struct. Geol., 11, 1–14, 1989.
Steiger, R. H. and E. Jäger, Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology, Earth Planet. Sci. Lett., 36, 359–362, 1977.
Takagi, H., K. Goto, and N. Shigematsu, Ultramylonite bands derived from cataclasite and pseudotachylyte in granites, northeast Japan, J. Struct. Geol., 22, 1325–1339, 2000.
Thatcher, W., Episodic strain accumulation in Southern California, Science, 194, 691–695, 1976.
Watanabe, I., Y. Sotozaki, and M. Gorai, Geology of the north eastern border district of northern Abukuma plateau, Sci. Rep. Tokyo Ed. Univ., 2, 69–78, 1953 (in Japanese with English abstract).
White, S., The effects of strain on the microstructures, fabrics, and deformation mechanisms in quarzites, Phil. Trans. Royal Soc. London, A283, 69–86, 1976.
Yanagisawa, Y., T. Yamamoto, Y. Banno, T. Yoshioka, K. Kubo, and F. Takizawa, Geology of the Somanakamura district with Geological Sheet Map at 1:50,000, Geological Survey of Japan, 144 pp., 1996 (in Japanese with English abstract).
About this article
Cite this article
Tomita, T., Ohtani, T., Shigematsu, N. et al. Development of the Hatagawa Fault Zone clarified by geological and geochronological studies. Earth Planet Sp 54, 1095–1102 (2002). https://doi.org/10.1186/BF03353308
- Granitic Rock
- Fault Gouge
- Fault Rock
- Crush Zone
- Mylonitic Foliation