仠埩扟撧捗巕丆杧棙塰丆抮尨幚丆巐枩廫懷敀垷宯憌忬僠儍乕僩偵偍偗傞OAE1a柍巁慺悈夠偺怺搙梊應偲d13Corg丒旝検尦慺曄摦丆戝嶃旝壔愇尋媶夛帍丆摿暿崋丆戞14崋丆297-315丆2009丏 
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              仠抮尨丂幚丒懞嶳夒巎丒懡揷堜廋丒奜惣撧捗旤丒戝摴廋岹丒愳敠曚崅丒埨揷彯搊丆巐崙壂偐傜嵦庢偝傟偨俀杮偺IMAGES僐傾傪梡偄偨戞巐婭屻婜偵偍偗傞僥僼儔憌彉丆壔愇丆79, 
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                仠Kiyokawa, S., Ito, T., Ikehara, M., and Kitajima, F., Middle Archean 
                volcano-hydrothermal sequence: bacterial-bearing 3.2-Ga Dixon Island 
                Formation, coastal Pilbara terrane, Australia, GSA Bulletin, 118, 
                3-22, 2006. 
                 
                仠Sakamoto, T., M. Ikehara, K. Aoki, K. Iijima, N. Kimura, T. Nakatsuka, 
                and M. Wakatsuchi Ice-rafted debris (IRD) based sea-ice expansion 
                events during the past 100 kyrs in the Okhotsk Sea, Deep Sea Research 
                II, 52, 2275-2301, 2005. 
                 
                仠Seki, O., M. Ikehara, K. Kawamura, T. Nakatsuka, H. Narita, T. 
                Sakamoto and K. Ohnishi, Reconstruction of plaeoproductivity in 
                the Sea of Okhotsk over the last 30 kyrs, Paleoceanography, Vol. 
                19, doi: 10.1029/2002PA000808, 2004. 
                 
                仠Seki, O., K. Kawamura, M. Ikehara, T. Nakatsuka, T. Oba, Variation 
                of alkenone sea surface temperature in the Sea of Okhotsk over the 
                last 85 kyrs, Organic Geochemistry, 35, 347-354, 2004. 
                 
                仠Narita, H., Sato, M., Tsunogai, S., Ikehara, M., Natatsuka, T., 
                Wakatsuchi, M., Harada, N., Ujiie, Y., Biogenic opal indicating 
                less productive northwesten North Pacific during the glacial ages, 
                Geophysical Research Letters, 29, 22-26, 2002. 
                 
                仠Kimoto, K., Takaoka, H., Oda, M., Ikehara, M., Matsuoka, H., Oba, 
                T., and Taira, A., Carbonate dissolution and planktonic foraminiferal 
                assemblages observed in three piston cores collected above the lysocline 
                in the western equatorial Pacific, Marine Micropaleontology, 47, 
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                仠抮尨丂幚丒抾杮婭擵丒戝壨撪捈旻丒壨懞岞棽丆撿戝梞偺昞憌懲愊暔偵偍偗傞懡娐朏崄懓扽壔悈慺偺堒搙暘晍丆抧媴壔妛丆35, 73-84, 
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                仠Ikehara, M., K. Kawamura, N. Ohkouchi, M. Murayama, T. Nakamura, 
                and A. Taira, Variations of terrestrial input and marine productivity 
                in the Southern Ocean (48) during the last two deglaciations, 
                Paleoceanography, 15, 170-180, 2000. 
                 
                仠Ohkouchi, N., Kawamura, K., Takemoto, N., Ikehara, M., and Nakatsuka, 
                T., Implications of carbon isotope ratios of C27-C33 alkanes and 
                C37 alkenes for the sources of organic matter in the Southern Ocean 
                surface sediments, Geophys. Res. Lett., 27, 233-236, 2000. 
                 
                仠Ikehara, M., K. Kawamura, N. Ohkouchi and A. Taira, Organic geochemistry 
                of greenish clay and organic rich sediments since early Miocene 
                from Hole 985A, Norway Basin, Proceedings of the Ocean Drilling 
                Program, Scientific Results, 162, 209-216, 1999. 
                 
                仠Ikehara, M., K. Kawamura, N. Ohkouchi, K. Kimoto, M. Murayama, 
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