Toshitsugu YAMAZAKI (Professor)

Speciality: Paleomagnetism and Rock magnetism, Marine Geology and Geophysics


[Refereed papers]

[119] Yamazaki, T., Li, J., Shimono, T., Kanamatsu, T. (2023)Difference in relative paleointensity recording efficiency of magnetic mineral constituents in a sediment core of Chile. J. Geophys. Res.: Solid Earth,128, e2023JB026816. doi:10.1029/2023JB026816

[118] Usui, Y., Yamazaki, T. (2023), K‑feldspar enrichment in the Pacific pelagic sediments before Miocene. Proc. Earth Planet. Sci.,10:47. doi:10.1186/s40645-023-00581-z

[117] Nakano, S., Furutani, H., Kato, S., Kouduka, M.,Yamazaki, T.,& Suzuki, Y. (2023)Bullet-shaped magnetosomes and metagenomics-based magnetosome gene profiles in a deep-sea hydrothermal vent chimney. Front. Microbiol., 14. doi:10.3389/fmicb.2023.1174899

[115] Yoshimura, Y., Ishizuka, O.,Yamazaki, T., Ahn, H., Kidane, T., Yamamoto, Y., Sekimoto, S., Sano, T., & Otofuji, Y. (2023) Edge-driven convection melting before the emplacement of the Afar mantle plume head inferred from 40Ar/ 39Ar dating. Geophys. Res. Lett., 50, e2022GL102560., doi:10.1029/2022GL102560

[114] Li, J.,Yamazaki, T., Usui, Y., Sagawa, T., Kubota, Y. & Kuroda, J. (2022) Understanding the role of biogenic magnetite in geomagnetic paleointensity recording: Insight from Ontong Java Plateau sediments. J. Geophys. Res: Solid Earth 127, e2022JB024387. doi:10.1029/2022JB024387

[113] Inoue,K.,Yamazaki, T., & Usui, Y. (2021) Influence of magnetofossils on paleointensity estimations inferred from principal component analyses of first-order reversal curve diagrams for sediments from the western equatorial Pacific. G-cubed22, e2021GC010081. doi:10.1029/2021GC20082

[112] Yamazaki, T., Chiyonobu, S., Ishizuka, O., Tajima, F., Uto, N., Takagawa, S. (2021) Rotation of the Philippine Sea plate inferred from paleomagnetism of oriented cores taken with an ROV‑based coring apparatus. Earth, Planets and Space 73:161.

[111]Usui, Y., Yamazaki, T. (2021) Non-chained, non-interacting, stable single-domain magnetite octahedra in deep-sea red clay: A new type of magnetofossil? Geochemistry, Geophysics, Geosystems, 22, e2021GC009770.

[110] Mitchell, R.N., Thissen, C.J., Evans, D.A.D., Slotznick, S.P., Coccioni, R., Yamazaki, T., Kirschvink, J.L. (2021) A Late Cretaceous true polar wander oscillation. Nat. Com., 12, 3629.

[109]Kubota, K., Ishikawa, T., Nagaishi, K., Kawai, T., Sagawa, T., Ikehara, M., Yokoyama, Y., Yamazaki, T. (2021) Comprehensive analysis of laboratory boron contamination for boron isotope analyses of small carbonate samples. Chem. Geol., 576, 120280.

[108] Usui, Yamazaki, T. (2021) Magnetostratigraphic evidence for post‑depositional distortion of osmium isotopic records in pelagic clay and its implications for mineral flux estimates, Earth Planets Space, 73:2.

[107] Yoshimura, Y., Yamazaki, T., Yamamoto, Y, Ahn, H.-S., Kidane, T., and Otofuji, Y. (2020) Geomagnetic Paleointensity Around 30 Ma Estimated From Afro-Arabian Large Igneous Province, Geochemistry, Geophysics, Geosystems, 21, e2020GC009341.

[106] Yamazaki, T. (2020) Reductive dissolution of biogenic magnetite. Earth Planets Space, 72:150. 

[105] Yamazaki, T., Fu, W., Shimono, T., Usui, Y. (2020) Unmixing biogenic and terrigenous magnetic mineral components in red clay of the Pacific Ocean using principal component analyses of first-order reversal curve diagrams and paleoenvironmental implications. Earth Planets Space, 72:120.

[104] Usui, Y., Yamazaki, T., Oka, T., and Kumagai, Y. (2019) Inverse magnetic susceptibility fabrics in pelagic sediment: implications for magnetofossil abundance and alignment. J. Geophys. Res. Solid Earth, 124, 10672-10686.

[103] Kubota, K., Yokoyama, Y., Ishikawa, T., Sagawa, T., Ikehara, M., and Yamazaki, T.(2019) Equatorial Pacific seawater pCO2 variability since the last glacial period.Sci. Rept., 9:13814,

[102] Yamazaki, T., Suzuki, Y., Kouduka, M., Kawamura, N. (2019) Dependence of bacterial magnetosome morphology on chemical conditions in deep-sea sediments. Earth Planet. Sci. Lett., 513, 135-143.

[101] Yamazaki, T., Yamamoto, Y. (2018) Relative paleointensity and inclination anomaly over the last 8 Myr obtained from the Integrated Ocean Drilling Program Site U1335 sediments in the eastern equatorial Pacific. J. Geophys. Res. Solid Earth, 123, 7305-7320.

[100] Yamamoto, Y., Yamazaki, T., Kanamatsu, T. (2018) An initial case study to deconvolve natural remanent magnetization of a continuous paleomagnetic sample using the software UDECON. Earth Planets Space, 70:160,

[99] Usui, Y., Shimono, T., Yamazaki, T. (2018) Rock magnetism of quartz and feldspars chemically separated from pelagic red clay: a now approach to provenance study. Earth Planets Space, 70:153,

[98] Usui, Y., Yamazaki, T., Saitoh, M., (2017) Changing abundance of magnetofossil morphologies in pelagic red clay around Minamitorishima, western North Pacific, Geochem. Geophys. Geosyst. (G-cubed), 18, 4558-4572.

[97] Sakuramoto, Y., Yamazaki, T., Kimoto, K., Miyairi, Y., Kuroda, J., Yokoyama, Y., and Matsuzaki, H. (2017) A geomagnetic paleointensity record of 0.6 to 3.2 Ma from sediments in the western equatorial Pacific and remanent magnetization lock-In depth, J. Geophys. Res.Solid Earth, 122, 7525–7543.

[96] Fujii, M., Okino, K., Sato, H., Nakamura, K., Sato, T., Yamazaki, T. (2016) Variation in magnetic properties of serpentinized peridotites exposed on the Yokoniwa Rise, Central Indian Ridge: Insights into the role of magnetite in serpentinization. Geochem. Geophys. Geosyst. (G-cubed), 17, 5024-5035.

[95] Yoshimura, T., Tamenori, Y., Suzuki, A., Kawahata, H., Iwasaki, N., Hasegawa, H., Nguyen, L.T., Kuroyanagi, A., Yamazaki, T., Kuroda, J., Ohkouchi, N. (2016) Altervalent substitution of sodium for calcium in biogenic calcite and aragonite. Geochim. Cosmochim. Acta, 202, 21-38.

[94] Yamazaki, T., Shimono, T., and Inoue, S. (2016) Paleomagnetic inclination variations during the last 200 kyr in the Okhotsk Sea and their relation to persistent non-axial-dipole field. Earth Planets Space, 68:174.

[93] Yamazaki, T., and Horiuchi, K. (2016) Precessional control on ocean productivity in the Western Pacific Warm Pool for the last 400 kyr: Insight from biogenic magnetite. Geochem. Geophys. Geosyst. (G-cubed), 17, 4399-4412.

[92] Honsho, C., Yamazaki, T., Ura, T., Okino, K., Morozumi, H., and Ueda, S. (2016) Magnetic anomalies associated with abundant production of pyrrhotite in a sulfide deposit in the Okinawa Trough, Japan. Geochem. Geophys. Geosyst. (G-cubed), 17, 4413-4424.

[91] Iijima, K., Yasukawa,K., Fujinaga, K., Nakamura, K., Machida, S., Takaya,Y., Ohta, J., Haraguchi, S., Nishio, Y., Usui, Y., Nozaki, T., Yamazaki, T., Ichiyama, Y., Ijiri, A., Inagaki, F., Machiyama, H., Suzuki, S., Kato, Y., and KR13-02 Cruise members (2016) Discovery of extremely REY-rich mud in the western North Pacific Ocean. Geochem. J., 50, 557-573.

[90] Fujinaga, K., Yasukawa, K., Nakamura, K., Machida, S., Takaya, Y., Ohta, J., Araki, S., Liu, H., Usami, R., Maki, R., Haraguchi, S., Nishio, Y., Usui, Y., Nozaki, T., Yamazaki, T., Ichiyama, Y., Ijiri, A., Inagaki, F., Machiyama, H., Iijima, K., Suzuki, K., Kato, Y., and KR13-02, MR13-E02 Leg 2 and KR14-02 Cruise members (2016) Geochemistry of REY-rich mud in the Japanese Exclusive Economic Zone around Minamitorishima Island. Geochem. J., 50, 575-590.

[89] Shimano, T., and Yamazaki, T. (2016) Environmental rock magnetism of Cenozoic red clay in the South Pacific, Geochem. Geophys. Geosyst. (G-cubed), 17, 1296-1311, doi:10.1002/2015GC006062.

[88] Horiuchi, K., Kamata, K., Maejima, S., Sasaki, S., Sasaki, N., Yamazaki, T., Fujita, S., Motoyama, H., and Matsuzaki, H. (2016) Multiple 10Be records revealing the history of cosmic-ray variations across the Iceland Basin excursion. Earth Planet. Sci. Lett., 440, 105-114.

[87] Tauxe, L., and Yamazaki, T. (2015) Paleointensities. Treatise on Geophysics, 2nd edition, vol. 5, Elsevier, pp. 461-509.

[86] Sasaki, T., Yamazaki, T., and Ishizuka, O. (2014) A revised spreading model of the West Philippine Basin, Earth Planets Space, 66:83

[85] Yamazaki, T., and Yamamoto, Y. (2014) Paleointensity of the geomagnetic field in the Late Cretaceous and earliest Paleogene obtained from drill cores of the Louisville seamount trail, Geochem. Geophys. Geosyst. (G-cubed), 15, 2454-2466, doi:10.1002/2014GC005298.

[84] Shimono, T., Yamazaki, T., and Inoue, S. (2014) Influence of sampling on magnetic susceptibility anisotropy of soft sediments: Comparison of gravity and piston cores. Earth Planets Space, 66:3

[83] Veloso, E.E., Hayman, N.W., Anma, R., Tominaga, M., Gonzalez, R.T., Yamazaki, T., and Astudillo, N. (2014) Magma flow directions in the sheeted dike complex at superfast spreading mid-ocean ridges: Insights from IODP Hole 1256D, Eastern Pacific. Geochem. Geophys. Geosyst. (G-cubed), 15, 1283-1295, doi:10.1002/2013GC004957.

[82] Yamamoto, Y., Yamazaki, T., Acton, G., Richter, C., Guidry, E., and Ohneiser, C. (2014) Paleomagnetic study of IODP Sites U1331 and U1332 in the Equatorial Pacific - extending relative geomagnetic paleointensity observations through the Oligocene and into the Eocene, Geophys. J. Int., 196, 694-711.

[81] Yamazaki, T., Inoue, S., Shimono, T., Sakamoto, T., and Sakai, T. (2013) Sea-ice conditions in the Okhotsk Sea during the last 550 kyr deduced from environmental magnetism, Geochem. Geophys. Geosyst. (G-cubed), 14, 5026-5040, doi 10.1002/2013GC004959.

[80] Yamazaki, T., and T. Shimono (2013) Abundant bacterial magnetite occurrence in oxic red clay. Geology, 41, 1191-1194.

[79] Ohneiser, C., G. Acton, J.E.T. Channell, G.S. Wilson, Y. Yamamoto, and T. Yamazaki (2013) A middle Miocene relative paleointensity record from the equatorial Pacific. Earth Planet. Sci. Lett., 374, 227-238.

[78] Koppers, A.A.P., T. Yamazaki, J. Geldmacher, and the IODP Expedition 330 Scientific Party (2013) IODP Expedition 330: Drilling the Louisville Seamount Trail in the SW Pacific. Scientific Drilling, 15, 11-22, 2013.

[77] Yamazaki, T., Y. Yamamoto, G. Acton, E.P. Guidry, C. Richter (2013) Rock-magnetic artifacts on long-term relative paleointensity variations in sediments. Geochem. Geophys. Geosyst. (G-cubed), 14, 29-43, doi:10.1029/2012GC004546

[76] Guidry, E.P., C. Richter, G. D. Acton, J. E. T. Channell, H. F. Evans, C. Ohneiser, Y. Yamamoto, and T. Yamazaki (2012) Oligocene-Miocene magnetostratigraphy of deep-sea sediments from the equatorial Pacific (IODP Site U1333), Geol. Soc. Lond. Spec. Publ., 373, doi 10.1144/SP373.7.

[75] Koppers, A.A.P., Yamazaki, T., Geldmacher, J., Gee, J.S., Pressling, N., Hoshi, H. and others (2012) Limited latitudinal mantle plume motion for the Lousville hotspot, Nature Geoscience, 5, 911-917, doi:10.1038/NGEO1638

[74] Pälike, H. and 64 others including T.Yamazaki (2012) A Cenozoic record of the equatorial Pacific carbonate compensation depth, Nature, 488, 609-615.

[73] Yamazaki, T., and Ikehara, M. (2012) Origin of magnetic mineral concentration variation in the Southern Ocean. Paleoceanography, 27. PA2206, doi:10.1029/2011PA002271.

[72] Yamazaki, T. (2012) Paleoposition of Intertropical Convergence Zone in the eastern Pacific inferred from glacial-interglacial changes in terrigenous and biogenic magnetic mineral fractions. Geology, 40, 151-154.

[71] Suganuma, Y., Okuno, J., Heslop, D., Roberts, A.P., Yamazaki, T., Yokoyama, Y. (2011) Post-depositional remanent magnetization lock-in for marine sediments deduced from 10Be and paleomagnetic records through the Matuyama - Brunhes boundary. Earth and Planetary Science Letters, 311, 39-52.

[70] Mochizuki, N., Oda, H., Ishizuka, O., Yamazaki, T., and Tsunakawa, H. (2011) Paleointensity variation across the Matuyama‐Brunhes polarity transition: Observations from lavas at Punaruu Valley, Tahiti. J. Geophys. Res., 116, B06103, doi:10.1029/2010JB008093.

[69] Yamazaki, T., and Solheid, P. (2011) Maghemite-to-magnetite reduction across the Fe-redox boundary in a sediment core from the Ontong-Java Plateau: influence on relative paleointensity estimation and environmental application. Geophys. J. Int., 185, 1243-1254.

[68] Suganuma, Y., Yokoyama, Y., Yamazaki, T., Kawamura, K., Horng, C.S., and Matsuzaki, H. (2010) 10Be evidence for delayed acquisition of remanent magnetization in marine sediments: Implication for a new age for the Matuyama-Brunhes boundary. Earth Planet. Sci. Lett,, 296,443-450.

[67] Yamazaki, T., Takahashi, M., Iryu, Y., Sato, T., Oda, M., Takayanagi, H., Chiyonobu, S., Nishimura, A., Nakazawa, T., and Ooka, T. (2010) Philippine Sea Plate motion since Eocene estimated from paleomagnetism of seafloor drill cores and gravity cores. Earth Planets Space, 62,495-502.

[66] Yokoyama, Y., Yamazaki, T., and Oda, H. (2010) Geomagnetic 100-kyr variation excited by a change in the Earth’s orbital eccentricity. Geophys. Res. Lett., 37, L11302, doi:10.1029/2010GL042898.

[65] Inoue, S., and Yamazaki, T. (2010) Geomagnetic relative paleointensity chronostratigraphy of sediment cores from the Okhotsk Sea. Palaeogeogr. Palaeoclimatol, Palaeoecol., 291, 253-266.

[64] Yamazaki, T. (2009) Environmental magnetism of Pleistocene sediments in the North Pacific and Ontong-Java Plateau: Temporal variations of detrital and biogenic components. Geochem. Geophys. Geosyst. (G-cubed), 10, Q07Z04, doi:10.1029/2009GC002413.

[63] Suganuma, Y., Yamazaki, T., and Kanamatsu, T. (2009) South Asian monsoon variability during the past 800 kyr revealed by rock magnetic proxies. Quat. Sci. Rev., 28, 926-938.

[62] Yamazaki, T., Kanamatsu, T., Mizuno, S., Hokanishi, N., and Gaffar, E.Z. (2008) Geomagnetic field variations during the last 400 kyr in the western equatorial Pacific: Paleointensity-inclination correlation revisited, Geophys. Res. Lett., 35, L20307, doi:10.1029/2008GL035373.

[61] Yamazaki, T. (2008) Magnetostatic interactions in deep-sea sediments inferred from FORC diagrams: Implications for relative paleointensity normalization. Geochem. Geophys. Geosyst. (G-cubed), 9, Q02005, doi:10.1029/2007GC001797.

[60] Suganuma, Y., Yamazaki, T., Kanamatsu, T., and Hokanishi, N. (2008) Relative paleointensity record during the last 800 kyr from the equatorial Indian Ocean: Implication for relationship between inclination and intensity variations. Geochem. Geophys. Geosyst. (G-cubed), Q02011, doi:10.1029/2007GC001723

[59] Tauxe, L., and Yamazaki, T. (2007) Chapter 13. Paleointensities. In Treatise of Geophysics, vol. 5, Geomagnetism, Elsevier, pp. 509-563.

[58] Yamazaki, T., and Kanamatsu, T. (2007) A relative paleointensity record of the geomagnetic field since 1.6 Ma from the North Pacific. Earth, Planets and Space, 59, 785-794.

[57] Yokoyama, Y., Yamazaki, T., and Oda, H. (2007) Geomagnetic 100-ky variation extracted from paleointensity records of the equatorial and North Pacific sediments. Earth, Planets and Space, 59, 795-805.

[56] Yamamoto, Y., Yamazaki, T., Kanamatsu, T., Ioka, N., and Mishima, T. (2007) Relative Paleointensity Stack during the Last 250 kyr in the Northwest Pacific. J. Geophys. Res., 112, doi:10.1029/2006JB004477.

[55] Veloso, E.E., Anma, R., Ota, T., Komiya, T., Kagashima, S., and Yamazaki, T. (2007) Paleocurrent patterns of the sedimentary sequence of the Taitao ophiolite constrained by anisotropy of magnetic susceptibility and paleomagnetic analysis. Sedimentary Geology, 201, 446-460.

[54] Kawamura, N., Oda, H., Ikehara, K., Yamazaki, T., Shoi, K., Taga, T., Hatakeyama, S., and Torii, T. (2007) Diagenetic effect on magnetic properties of marine core sediments from the southern Okhotsk Sea. Earth Planets and Space, 59, 83-93.

[53] Kitada, K., Seama, N., Yamazaki, T., Nogi, Y., and Suyehiro, K. (2006) Distinct regional differences in crustal thickness along the axis of the Mariana Trough, inferred from gravity anomaly. Geochem., Geophys., Geosyst., 7, doi:10.1029/2005GC001119.

[52] Yamazaki, T., and Oda, H. (2005) A geomagnetic paleointensity stack between 0.8 and 3.0 Ma from equatorial Pacific sediment cores. Geochem., Geophys., Geosyst., 6, doi:10.1029/2005GC001001.

[51] Veloso, E.A.E., Anma, R., and Yamazaki, T. (2005) Tectonic rotations during the Chile Ridge collision and obduction of the Taitao ophiolite (southern Chile). Island Arc, 14, 599-615.

[50] Liu, B., Saito, Y., Yamazaki, T., Abdeldayem, A., Oda, H., Hori, K., and Zhao, Q. (2005) Anisotropy of magnetic susceptibility (AMS) characteristics of tide-influenced sediments in the Late Pleistocene-Holocene changjiang incised-valley fill, China. Jour. Coastal Res., 21, 1031-1041.

[49] Yamazaki, T., and Oda, H. (2004) Intensity-Inclination Correlation on Long-Term Secular Variation of the Geomagnetic Field and its Relevance to Persistent Non-Dipole Component. AGU Monograph 145 "Timescales of the Internal Geomagnetic Field", 287-298.

[48] Abdeldayem, A.L., Ikehara, K., and Yamazaki, T. (2004) Flow path of the 1993 Hokkaido-Nansei-oki earthquake seismoturbidite, southern margin of the Japan sea north basin, inferred from anisotropy of magnetic susceptibility. Geophys. J. Int., 157, 15-24.

[47] Yamazaki, T., Seama, N., Okino, K., Kitada, K., Joshima, M., Oda, H., and Naka, J. (2003) Spreading process of the northern Mariana Trough: Rifting-spreading transition at 22N. Geochem., Geophys., Geosyst. 4, doi:10.1029/2002GC000492.

[46] Yamazaki, T., Abdeldayem, A.L., and Ikehara, K. (2003) Rock-magnetic changes with reduction diagenesis in Japan Sea sediments and preservation of geomagnetic secular variation in inclination during the last 30,000 years. Earth Planets Space, 55, 327-340.

[45] Yamazaki, T. (2002) Long-term secular variation in geomagnetic field inclination during Brunhes Chron recorded in sediment cores from Ontong-Java Plateau. Phys. Earth Planet. Inter.,133, 57-72.

[44] Yamamoto, Y., Shimura, K., Tsunakawa, H., Kogiso, T., Uto, K., Barsczus, H.G., Oda, H., Yamazaki, T., and Kikawa, E. (2002) Geomagnetic paleosecular variation for the past 5 Ma in the Society Islands, French Polynesia. Earth Planets Space, 54, 797-802.

[43] Yamazaki, T., and Oda, H. (2002) Orbital influence on Earth's magnetic field: 100,000-year periodicity in inclination. Science,295, 2435-2438.

[42] Ohara, Y., Stern, R.J., Ishii, T., Yurimoto, H., and Yamazaki, T. (2002) Peridotites from the Mariana Trough: first look at the mantle beneath an active back-arc basin.  Contrib. Mineral. Petrol., 143, 1-18.

[41] Yamazaki, T., and Oda, H. (2001) A Brunhes-Matuyama polarity transition record from anoxic sediments in the South Atlantic (Ocean Drilling Program Hole 1082C). Earth Planets Space,53, 817-827.

[40] Fujiwara, T., Yamazaki, T., and Joshima, M. (2001) Bathymetry and magnetic anomalies in the Havre Trough and southern Lau Basin: from rifting to spreading in back-arc basins. Earth Planet. Sci. Lett.,185, 253-264.

[39] Torii, M., Lee, T.-Q., Fukuma, K., Mishima, T., Yamazaki, T., Oda, H., and Ishikawa, N. (2001) Mineral magnetic study of the Taklimakan desert sands and its relevance to the Chinese loess.  Geophys. J. Int, 146, 416-424.

[38] Liu, B., Saito, Y., Yamazaki, T., Abdeldayem, A., Oda, H., Hori, K., and Zhao, Q. (2001) Paleocurrent analysis for the Late Pleistocene-Holocene incised-valley fill of the Yangtze delta, China by using anisotropy of magnetic susceptibility data.  Mar. Geol., 176, 175-189.

[37] Frost, G.M., and Yamazaki, T. (2001) Data Report: Magnetic properties of core sediments from Site 1081 (Walvis Ridge), Leg 175.  Proc. ODP Sci. Results, 175, 1-17 [On line].

[36] Solheid, P.A., and Yamazaki, T. (2001) Data Report: Evidence of the dissolution of fine-grained magnetic minerals from measurements of natural and laboratory-induced remanent magnetizations at Site 1077.  Proc. ODP Sci. Results, 175, 1-10 [On line].

[35] Yamazaki, T., Solheid, P.A., and Frost, G.M. (2000) Rock magnetism of sediments in the Angola-Namibia upwelling system with special reference to loss of magentization after core recovery. Earth Planets Space, 52, 329-336.

[34] Yokoyama, Y., and Yamazaki, T. (2000) Geomagnetic paleointensity vatiation with a 100 kyr quasi-period. Earth Planet. Sci. Lett., 181, 7-14.

[33] Yamazaki, T. (1999) Relative paleointensity of the geomagnetic field during Brunhes Chron recorded in North Pacific deep-sea seidment cores: Orbital influence? Earth Planet. Sci. Lett.,169, 23-35.

[32] Asahara, Y., Tanaka, T., Kamioka, H., Nishimura, A., and Yamazaki, T. (1999) Provenance of the north Pacific sediments and process of source material transport as derived from Rb-Sr isotopic systematics.  Chem. Geol., 158, 271-291.

[31] Yamazaki, T., and Kawahata, H. (1998) Organic carbon flux controls the morphology of magnetofossils in marine sediments. Geology, 26, 1064-1066.

[30] Yamazaki, T., and Yuasa, M. (1998) Possible Miocene rifting of the Izu-Ogasawara (Bonin) arc deduced from magnetic anomalies. Island Arc, 7, 374-382.

[29] Yamazaki, T., and Murakami, F. (1998) Asymmetric rifting of the Northern Mariana Trough. Island Arc,7, 460-470.

[28] Yamazaki, T., and Ioka, N. (1997) Cautionary note on magnetic grain-size estimation using the ratio of ARM to magnetic susceptibility.  Geophys. Res. Lett., 24, 751-754.

[27] Yamazaki, T., and Ioka, N. (1997) Environmental rock-magnetism of pelagic clay: Implications for Asian eolian input to the North Pacific since the Pliocene.  Paleoceanography, 12, 111-124.

[26] Usui, A., Bau, M., and Yamazaki, T. (1997) Manganese microchimneys burried in the Central Pacific pelagic sediments: evidence of intraplate water circulation? Mar. Geol., 141, 269-285.

[25] Stern, R.J., Bloomer, S.H., Martinez, F., Yamazaki, T., and Harrison, T.M. (1996) The composition of back-arc basin lower crust and upper mantle in the Mariana Trough: A first report.  The Island Arc, 5, 354-372.

[24] Baker, N., Fryer, P., Martinez, F., and Yamazaki, T.  (1996) Rifting history of the northern Mariana Trough: SeaMARC II and seismic reflection surveys.  J. Geophys. Res., 101, 11427-11455.

[23] Yamazaki, T., Ioka, N., and Eguchi, N. (1995) Relative paleointensity of the geomagnetic field during the Brunhes Chron.  Earth Planet. Sci. Lett., 136, 525-540.

[22] Urabe, T., Baker, E.T., Ishibashi, J., Feely, R.A., Marumo, K., Massoth, G.J., Maruyama, A., Shitashima, K., Okamura, K., Lupton, J.E., Sonoda, A., Yamazaki, T., and 18 others (1995) The effect of magmatic activity on hydrothermal venting along the superfast-spreading East Pacific Rise.  Science, 269, 1092-1095.

[21] Martinez, F., Fryer, P., Baker, N.A., and Yamazaki, T. (1995) Evolution of backarc rifting: Mariana Trough, 20°-24°N.  J. Geophys. Res., 100, 3807-3827.

[20] Yamazaki, T. and Ioka, N. (1994) Long-term secular variation of the geomagnetic field during the last 200 kyrs recorded in sediment cores from the western equatorial Pacific.  Earth Planet. Sci. Lett., 128, 527-544.

[19] Yamazaki, T., Kikawa, E., Yamamoto, H., and Murakami, F. (1994) Spreading mode of the West Caroline Basin deduced from magnetic vector anomalies.  J. Geomag. Geoelectr., 46, 443-453.

[18] Okubo, Y., Makino, M., Kasuga, S., Isezaki, N., Yamazaki, T., Ishihara, T., and Nakatsuka, T. (1994) Magnetic anomalies of Japan and adjoining areas. J. Geomag. Geoelectr., 46, 411-421.

[17] Yamazaki, T., Murakami, F. and Saito, E. (1993) Mode of seafloor spreading in the northern Mariana Trough.  Tectonophysics, 221, 207-222.

[16] Joseph, D., Taylor, B., Shor, A.N., Yamazaki, T. (1993) The Nova-Canton Trough and the Late Cretaceous evolution of the Central Pacific, In: The Mesozoic Pacific: Geology, Tectonics, and Volcanism (AGU Geophys. Monogr., 77), pp.171-185.

[15] Yamazaki, T. (1992) Heat Flow in the Izu-Ogasawara (Bonin)-Mariana Arc. Bull. Geol. Surv. Japan, 43, 207-235.

[14] Yamazaki, T., Katsura, I. and Marumo, K. (1991) Origin of stable remanent magnetization of siliceous sediments in the central equatorial Pacific.  Earth Planet. Sci. Lett., 105, 81-93.

[13] Yamazaki, T., Ishihara, T. and Murakami, F. (1991) Magnetic anomalies over the Izu-Ogasawara (Bonin) Arc, Mariana Arc and Mariana Trough. Bull. Geol. Surv. Japan, 42, 655-686.

[12] Ishihara, T. and Yamazaki, T. (1991) Gravity anomalies over the Izu-Ogasawara (Bonin) and northern Mariana Arcs. Bull. Geol. Surv. Japan, 42, 687-701.

[11] Yamazaki, T. and Katsura, I. (1990) Magnetic grain size and viscous remanent magnetization of pelagic clay.  J. Geophys. Res., 95, 4373-4382.

[10] Otsuki, K., Heki, K., and Yamazaki, T. (1990) New data which support the "laws of convergence rate of plates" proposed by Otuki.  Tectonophysics, 172, 365-368.

[9] Yamazaki, T. (1989) Paleomagnetism of Miocene sedimentary rocks around Matsushima Bay, Northeast Japan and its implication for the time of the rotation of Northeast Japan. J. Geomag. Geoelectr., 41, 533-548.

[8] Yamazaki, T. and Okamura, Y. (1989) Subducting seamounts and deformation of overriding forearc wedges around Japan.  Tectonophysics, 160, 207-229.

[7] Yamazaki, T. (1988) Magnetization of Erimo Seamount.  J. Geomag. Geoelectr., 40, 715-728.

[6] Yamazaki, T. (1988) Heat flow in the Sumisu Rift, Izu-Ogasawara (Bonin) arc. Bull. Geol. Surv. Japan, 39, 63-70.

[5] Yamazaki, T. (1987) Fixation of remanent magnetization with compaction in deep-sea environment.  J. Geomag. Geoelectr., 39, 307-312.

[4] Kobayashi, K., Cadet, J.-P., Aubouin, J., Boulegue, J., Dubois, J., von Huene, R., Jolivet, L., Kanazawa, T., Kasahara, J., Koizumi, K., Lallemand, S., Nakamura, Y., Pautot, G., Suyehiro, K., Tani, S., Tokuyama, H., and Yamazaki, T. (1987) Normal faulting of the Daiichi-Kashima Seamount in the Japan Trench revealed by the Kaiko I cruise, Leg 3.  Earth Planet. Sci. Lett., 83, 257-266.

[3] Cadet, J.-P., Kobayashi, K., Aubouin, J., Boulegue, J., Dubois, J., von Huene, R., Jolivet, L., Kanazawa, T., Kasahara, J., Koizumi, K., Lallemand, S., Nakamura, Y., Pautot, G., Suyehiro, K., Tani, S., Tokuyama, H., and Yamazaki, T. (1987) The Japan Trench and its juncture with the Kuril Trench: cruise results of the Kaiko project Leg 3.  Earth Planet. Sci. Lett., 83, 268-284.

[2] Yamazaki, T. (1986) Secondary remanent magnetization of pelagic clay in the South Pacific: application of thermal demagnetization.  Geophys. Res. Lett., 13, 1438-1441.

[1] Yamazaki, T., Joshima, M. and Saito, Y. (1985) Geomagnetic inclination during last 9000 years recorded in sediment cores from Lake Kasumigaura, Japan.  J. Geomag. Geoelectr., 37, 215-221.

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