- Open Access
Utility of petrophysical and geophysical data to constrain the subsurface structure of the Kitakami plutons, northeast Japan
Earth, Planets and Space volume 57, pages727–741(2005)
The Geological Survey of Japan (GSJ), AIST has been systematically measuring physical properties of basement rocks in Japan for more than 30 years and has started to construct a petrophysical database called PB-Rock 21 (Petrophysical Database of Basement rocks in Japan for the 21st Century, http://www.aist.go.jp/RIODB/PB-Rock21/). The petrophysical data has been integrated with aeromagnetic data to determine the subsurface structure of the Himekami and Sobanokami plutons, members of the Kitakami plutonic belt, northeast Japan. For the Himekami pluton, the result of apparent magnetization intensity mapping clearly shows zonation within sub-plutons as well as regional rock type differences between the North (felsic) and South (felsic and mafic complex) sub-plutons. The bottom depths of the pluton were estimated by a successive 3-D magnetic modeling to be 1.7 km (North sub-pluton) and 1.5 km below sea level (South sub-pluton), respectively. Magnetic modeling of the Sobanokami pluton, which is partly exposed at the eastern edge of the Ishinomaki Plain, implies that the main part of the pluton extends to the northwest below the surface. Its western edge is cut by the Ishinomaki-wan fault, believed to be the upward extension of the fault plane of the 2003 northern Miyagi earthquake as defined by seismic observations and reflection seismic surveys conducted after the earthquake. Integrated magnetic and gravity modeling suggests that the Kakeyama Formation, a Neogene conglomerate deposited in a half-graben along the Ishinomaki-wan fault during Miocene rifting, contains more granitic fragments toward the south than to the north in the Ishinomaki Plain.
Clark, D. A., S. J. Saul, and D. W. Emerson, Magnetic and gravity anomalies of a triaxial ellipsoid, Exploration Geophysics, 17, 189–200, 1986.
Finn, C., Aeromagnetic evidence for a buried Early Cretaceous magmatic arc, northeast Japan, J. Geophys. Res., 99, 22165–22185, 1994.
Geological Survey of Japan, Total intensity aeromagnetic map of the coast of Kesennuma-Iwanuma area (1:200,000), VI-1, Total Intensity Aeromagnetic Map Series, 1974.
Geological Survey of Japan, Geologic Map of Japan, 1:1,000,000 (3rd Ed.), CD-ROM Version, Digital Geoscience Map, G1, 1995.
Iwasaki, T., T. Yoshii, T. Moriya, A. Kobayashi, M. Nishiwaki, T. Tsutsui, T. Iidaka, A. Ikami, and T. Masuda, Precise P and S wave velocity structures in the Kitakami massif, Northern Honshu, Japan, from a seismic refraction experiment, J. Geophys. Res., 99, 22187–22204, 1994.
Japan Natural Gas Association and Japan Offshore Petroleum Development Association, Recent oil exploration in Japan, 281 pp., Tokyo, Japan, 1986 (in Japanese).
Japan Natural Gas Association and Japan Offshore Petroleum Development Association, Recent oil exploration in Japan (revised edition), 520 pp., Tokyo, Japan, 1992 (in Japanese).
Jolivet, L., K. Tamaki, and M. Fournier, Japan Sea, Opening history and mechanism: A synthesis, J. Geophys. Res., 99, 22237–22259, 1994.
Kanaya, H., V. Potassium, thorium, uranium and magnetic susceptibility, Cretaceous Granitic Rocks in the Kitakami Mountains—Petrography and Zonal Arrangement, Geol. Surv. Japan Report, 251, 91–103, 1974 (in Japanese with English abstract).
Kanaya, H. and M. Katada, Contents of thorium, uranium and potassium, and magnetic susceptibility of the permian Toyama and usugine facies in the Southern Kitakami mountains, Bull. Geol. Surv. Japan, 26, 13–27, 1975 (in Japanese with English abstract).
Kanaya, H. and S. Okuma, Petrophysical properties of Cretaceous to Paleogene granitic rocks in Japan: Part 1. A case of the northern Tohoku region, Bull. Geol. Surv. Japan, 54, 221–233, 2003.
Kanaya, H., M. Katada, and M. Nagahara, Physical properties of the Miyamori ultramafic complex in the Kitakami Mountains, northeast Japan, J. Japan Mineral. Petrol. Econ. Geol., 93, 71–82, 1998 (in Japanese with English abstract).
Kanisawa, S., Granitic rocks closely associated with the lower Cretaceous volcanic rocks in the Kitakami Mountains, northeast Japan, J. Geol. Soc. Japan, 80, 355–367, 1974.
Kanisawa, S. and M. Katada, Characteristics of Early Cretaceous igneous activity, Kitakami Mountains, Northeast Japan, Earth Science, 42, 220–236, 1988 (in Japanese with English abstract).
Kano, H. And Research group of Granite plutons, Akita Univ., Structural Petrology of Granite plutons in the Kitakami Mountainlands, Japan, J. Japan Mineral. Petrol. Econ. Geol., 73, 97–120, 1978.
Katada, M., I. Introductory remarks, Cretaceous Granitic Rocks in the Kitakami Mountains—Petrography and Zonal Arrangement, Report of Geol. Surv. Japan, 251, 1–7, 1974 (in Japanese with English abstract).
Katada, M., K. Takahashi, and I. Fujiwara, Petrography of the Himekami pluton in the northwest Kitakami Mountains, J. Japan Mineral. Petrol. Econ. Geol., 86, 91–99, 1991 (in Japanese with English abstract).
Komazawa, M., Gravity Grid Database of Japan, Gravity CD-ROM of Japan, Digital Geoscience Map, P-2, Geol. Surv. Japan, 2000.
Komazawa, M., R. Morijiri, T. Hiroshima, M. Makino, Y. Murata, T. Ishihara, K. Nishimura, T. Nakatsuka, A. Nabetani, K. Noritomi, and M. Mishina, Gravity map of the Kitakami district (Bouguer Anomalies), Gravity Map Series, 7, Geol. Surv. Japan, 1996.
Maruyama, S. and T. Seno, Orogeny and relative plate motions: Example of the Japanese Islands, Tectonophysics, 127, 305–329, 1986.
Nabetani, S., H. Kano, K. Noritomi, K. Takagi, M. Suzuki, and Y. Fujimoto, Gravimetric Investigation on Granite plutons in the Kitakami Mountainlands, Northeast Japan; No. 1: Tono District, Butsuri-Tansa (Geophys. Explor), 25, 153–167, 1972 (in Japanese with English abstract).
Nakamura, K., Geological Map off Kinkasan, 1:200,000, Marine Geology Map Series, 33, Geol. Surv. Japan, 1990.
Nakamura, K., Inversion tectonics and its structural expression, J. Tectonic Res. Group Japan, 38, 3–45, 1992 (in Japanese with English abstract).
Nakatsuka, T., Minimum norm inversion of magnetic anomalies with application to aeromagnetic data in the Tanna area, central Japan, J. Geomag. Geoelectr, 47, 295–311, 1995.
Nakatsuka, T., Library software for geophysical data processing and representation. GSJ Openfile Report, no. 400, 86 pp. + 1 CD-ROM, Geol. Surv. Japan, AIST, 2003.
Ogawa, K. and J. Suyama, Distribution of aeromagnetic anomalies, Hokkaido, Japan and its geologic interpretation, in Volcanoes and Tectonosphere: Tokai, Japan, edited by H. Aoki, and S. Iizuka, pp. 207–215, Tokai Univ. Press, 1976.
Ogawa, Y., Deep crustal resistivity structure revealed by wideband magnetotellurics—Tohoku and Hokkaido region, Ph.D. Thesis, Univ. Of Tokyo, 1992.
Oide, K., H. Nakagawa, and S. Kanisawa, Regional Geology of Japan, Part 2 Tohoku, Kyoritsu Shuppan, 338 pp., 1989 (in Japanese).
Okada, T., N. Umino, and A. Hasegawa, Rupture process of the July 2003 northern Miyagi earthquake sequence, NE Japan, estimated from double-difference hypocenter locations, Earth Planets Space, 55, 741–750, 2003.
Okuma, S., An interpretation of magnetic anomalies in the Northern To-hoku district, Japan: The result of an application of a two-layer model inversion to magnetic anomalies in the Hokuroku district and its relation to the distribution of metallic ore deposits, Bull. Geol. Surv. Japan, 44, 193–217, 1993 (in Japanese with English abstract).
Okuma, S. and H. Kanaya, Rock Magnetism and Magnetic Survey, Chishitsu News, 428, 20–26, 1990 (in Japanese).
Okuma, S. and S. Suto, Magnetic structure of the Sengan geothermal area, Rept. Geol. Surv. Japan, 266, 425–447, 1987 (in Japanese with English abstract).
Okuma, S., T. Tosha, and H. Kanaya, Rock magnetism and magnetic anomalies of the Miyamori Ultramafic Complex, Japan, Butsuri-Tansa (Geophys. Explor.), 46, 269–282, 1993 (in Japanese with English abstract).
Okuma, S., M. Makino, and T. Nakatsuka, Magnetization intensity mapping in and around the Izu-Oshima volcano, Japan, J. Geomag. Geoelectr., 46, 541–556, 1994.
Okuma, S., H. Kanaya, and R. Morijiri, PB-Rock 21, Research Information Database, 87, National Institute of Advanced Industrial Science and Technology (AIST), 2003.
Oshima, S., T. Kondo, T. Tsukamoto, and K. Onodera, Magnetic anomalies at sea around the northern part of Japan, Report of Hydrographic Researches, Hydrographic Office of Japan, 10, 39–44, 1975.
Otofuji, Y., K. Sato, N. Iba, and T. Matsuda, Cenozoic northward translation of the Kitakami massif in northeast Japan: paleomagnetic evidence, Earth Planet. Sci. Lett., 153, 119–132, 1997.
Research Group for Active Faults of Japan, Active faults in Japan: Sheet maps and inventories (revised edition), Univ. Of Tokyo Press, Tokyo, 437 pp., 1991 (in Japanese with English abstract).
Sato, H., N. Kato, T. Imaizumi, Y. Ikeda, S. Okada, K. Kagohara, S. Ogino, T. Kawanaka, and K. Kasahara, Seismic reflection profiling across the source fault of the 2003 Northern Miyagi earthquake, NE Japan, Report of a General Research about the earthquake hazard caused by the 2003 Northern Miyagi Earthquake, Project Number: 15800009, Ministry of Education, Culture, Sports, Sciences and Technology, 5–20, 2004 (in Japanese).
Segawa, J. and T. Furuta, Geophysical study of the mafic belts along the margins of the Japanese Islands, Tectonophysics, 44, 1–26, 1978.
Shibata, K., Isotopic ages of granite core from the MITI-Kesennuma Oki Well, Bull. Geol. Surv. Japan, 37, 467–470, 1986.
Takizawa, F., Y. Yanagisawa, K. Kubo, and K. Kamada, Geologic Map of Japan, 1:200,000, Ishinomaki (2nd Ed.), Geol. Surv. Japan, 1992.
Talwani, M., Computation with the help of a digital computer of magnetic anomalies caused by bodies of arbitrary shape, Geophysics, 30, 797–817, 1965.
Tanaka, S. and H. Kanaya, Rock densities in the Kitakami Mountains Part I, Bull. Geol. Surv. Japan, 37, 471–477, 1986 (in Japanese with English abstract).
Tanaka, S. and H. Kanaya, Rock densities in the Kitakami Mountains Part II, Bull. Geol. Surv. Japan, 38, 191–196, 1987 (in Japanese with English abstract).
Umino, N., T. Okada, J. Nakajima, S. Hori, T. Kono, T. Nakayama, N. Uchida, J. Shimizu, J. Suganomata, S. S. N. Gamage, A. Hasegawa, and N. Asano, Hypocenter and focal mechanism distributions of aftershocks of July 26 2003 M6.4 northern Miyagi, NE Japan, earthquake revealed by temporary seismic observation, Earth Planets Space, 55, 719–730, 2003.
Vacquier, V. and S. Uyeda, Paleomagnetism of nine seamounts in the western Pacific and of three volcanoes in Japan, Bull. Earthq. Res. Inst., 45, 815–848, 1967.
Yokokura, T., K. Yamaguchi, N. Kano, T. Yokota, A. Tanaka, and T. Ohtaki, Seismic reflection surveys around the southern part of hypocen-tral area of 2003 Miyagi-ken Hokubu earthquake (part 1), Abstracts of the 2004 Japan Earth and Planetary Science Joint Meeting, S053–017, 2004.
About this article
Cite this article
Okuma, S., Kanaya, H. Utility of petrophysical and geophysical data to constrain the subsurface structure of the Kitakami plutons, northeast Japan. Earth Planet Sp 57, 727–741 (2005). https://doi.org/10.1186/BF03351852
- Kitakami pluton
- petrophysical data
- rock magnetic data
- magnetic anomaly
- gravity anomaly