Age M Volcano-Tephra Stratigraphy 0.014 M3.0 IzuOshima-1986 0.017 M2.9 Miyakejima-1983 0.027 M2 Nishinoshima-1973 0.038 M2.5 Miyakejima-1962 0.050 M1 IzuOshima-1950 0.060 M2.5 Miyakejima-1940 (Hyotan'yama) 0.061 M3 IzuTorishima-1939 0.096 M3 FukutokuokanoBa-1904 0.098 M3.0 IzuTorishima-1902 0.126 M3 Miyakejima-1874 (Yakiba) 0.165 M2 Miyakejima-1835 0.179 M3.3 IzuOshima-Y0.8 15 cm below present surface 0.217 M3.3 Aogashima-1783 0.223 M4.2 IzuOshima-Y1.0 4 cm below -Y0.8 0.237 M3 Miyakejima-1763 (Usuki) 0.288 M2.5 Miyakejima-1712 0.293 M5.2 Fuji-1707 0.316 M4.0 IzuOshima-2.0 10 cm below -Y1.0 0.357 M3 Miyakejima-1643 (Koshiki) 40 cm above Mukaiyama 0.404 M3.7 IzuOshima-Y3.0 7 cm below -Y2.0 0.52 M3 Hachijojima.Nishiyama-10 0.529 M2.9 IzuOshima-Y3.8 10 cm below -Y3.0 0.531 M3.4 Miyakejima-1469 (Oyama) 25 cm above Mukaiyama 0.554 M4.4 IzuOshima-Y4.0 (Takenohira scoria cone) 2 cm below -Y3.8 0.583 M2.3 IzuOshima-Y4.2 2.5 cm below -Y4.0 0.680 M3.9 IzuOshima-Y5.0 11 cm below -Y4.2 0.693 M3.1 IzuOshima-Y5.2 (Motomachi lava) 1 cm blow -Y4.0 0.755 M1.8 IzuOshima-Y5.6 0.8 unknown-unnamed glass between IzuOshima-Y6.0 and -N1.0 0.817 M4.0 IzuOshima-Y6.0 10 cm blow -Y5.2 0.846 M3 Miyakejima-1154 0.943 M4.6 IzuOshima-N1.0 10 cm below -Y6.0 1 M3 Hachijojima.Nishiyama-9 1.001 Fuji-Kenmarubi lava 1.063 Fuji-Takamarubi lava 1.114 M4.9 Niijima-Mukaiyama 20 cm below present surface 1.131 M4.2 IzuOshima-N2.0 15 cm below -N1.0 1.136 M1.9 Fuji-Nagaoyama 8 cm above Ten'jin'yama 1.14 M3 Miyakejima-Miike maar 10 cm below Mukaiyama; 10 cm above Tenjosan 1.160 M3.1 Niijima-Atchiyama 5 cm below Mukaiyama 1.162 M3.6 IzuOshima-N3.0 2.5 cm below -N2.0; intercalates Tenjosan 1.162 M4.8 Kozushima-Tenjosan 6 cm below Mukaiyama 1.162 unknown-unnamed glass between IzuOshima-N3 and -N4 1.178 M3.2 IzuOshima-N3.2 1 cm below -N3.0 1.200 M2.2 Fuji-Ten'jin'yama 1.287 M4.3 IzuOshima-N4.0 7 cm below -N3.2 1.3 M3.8 Fuji-Futatsuzuka 70 cm below -1707 1.300 M3.3 IzuOshima-N4.2 1 cm below -N4.0 1.325 M4.0 IzuOshima-N4.4 2 cm below -N4.2 1.350 M3.5 IzuOshima-N4.6 2 cm below -N4.4 1.375 M3.5 IzuOshima-N4.8 2 cm below -N4.6 1.400 M3.9 IzuOshima-S1.0 2 cm below -N4.8 1.425 M3.2 IzuOshima-S1.5 2 cm below -S1.0 1.450 M3.8 IzuOshima-S2.0 (debris avalanche) 2 cm below -S1.5 1.5 M3 Hachijojima.Nishiyama-8 1.6 M4 IzuOshima-O1 1.8 Kozushima-Kanbeyama and Hanadate 3 cm below Tenjosan 1.8 Fuji-Hinokimarubi 2 lava 1.8 unknown-unnamed glass between IzuOshima-O2 and -O3 1.9 M5.0 Fuji-Yufune 2 60 cm below Futatsuzuka 1.9 IzuOshima-O3 lava 2.0 M3 Miyakejima-HinoyamatogeNW scoria cone 2 M4 Hachijojima.Nishiyama-7/6/5 (Kandoyama) 2.4 Fuji-Gotenba debris avalanche 60 cm below Yufune 2 2.4 M5 Aogashima-Ikenosawa 2 2.5 M4 IzuOshima-O8/9 (Sadoyama scoria cone) 100 cm below -N4 2.5 M3 Hachijojima.Nishiyama-4 2.6 M5.0 Fuji-Zunazawa 5 cm below Gotenba; 18 cm above Kawagodaira 2.7 M3.8 HigashiIzu-Iwanoyama and Iyuzan 7 cm above Kawagodaira 2.8 M4.7 Fuji-Omuro 2.9 M5 Aogashima-Ikenosawa 1 3 M4.4 Miyakejima-Igaya 2 (caldera-forming) 60 cm below present surface 3 M3 Hachijojima.Nishiyama-3 (Sokodo) 3.0 M5 unknown-unnamed glass between IzuOshima-O13 and -O15 3.14 M4.9 Fuji-Osawa 4 and 10 cm above Kawagodaira (within Hamanako) 3.20 M4.6 HigashiIzu-Kawagodaira 3.2 M4 IzuOshima-O15 3.4 M4.7 Fuji-Sengoku 4 cm below Kawagodaira 3.5 M3 Hachijojima.Nishiyama-2 3.8 M3 Hakone.Kamiyama nuee ardente about 20 cm below Sengoku 3.99 M3 Hachijojima.Nishiyama-1 4.0 M4 Hachijojima-Mitsune 7 120 cm below surface 4 M1 HigashiIzu-Yoichizaka 4.1 M4 Hachijojima-Obata immediately below Mitsune 7 4.3 M4 Hachijojima-Mitsune 6 10 cm below Mitsune 7 5 M4.1 HigashiIzu-Omuroyama 16 cm below Kawagodaira 5 M3.5 Miyakejima-Igaya 1 (caldera-forming) 30 cm below Igaya 2 5 M4.0 Niijima-Wakago 30 cm below Mukaiyama 5.0 M4.6 Fuji-R2 120 cm below Sengoku 5.1 unknown-Iwai 5.2 M4.5 Fuji-R1 15 cm below -R2 5.3 Hakone-Futagoyama lava dome 6 M3 Miyakejima-Hinoyamatoge scoria cone 80 cm below HinoyamatogeNW 6 M4 IzuOshima-O21 6.3 M4 Hachijojima-Mitsune 5 60 cm below Mitsune 6 6.5 M4 IzuOshima-O28 (unnamed scoria cone) 200 cm below Sadoyama 7 M4 Hachijojima-Miharataki 18 cm below Mitsune 5 7 M4 IzuOshima-O35 7.330 M8.1 Kikai-Akahoya between IzuOshima-O39 and -O40 7.4 M4 IzuOshima-O40 7.5 M4.2 Niijima-Niijimayama 20 cm below Wakago 7.7 M4 Hachijojima-Hachimanyama 20 cm below Akahoya; between Mitsune 5 and 4 8 M3.9 Miyakejima-Ohunatowan maar 60 cm below Igaya 1 8 M4 IzuOshima-O41 (debris avalanche) 8.1 unknown-unnamed glass between IzuOshima-O41 and -O43 8.5 M4 IzuOshima-O47 8.9 M4 IzuOshima-O50 9 Toshima-Kajiana and Miana lavas 9.3 M4 IzuOshima-O53 9.5 M3 Miyakejima-Okubo scoria cone 25 cm below Ofunatowan 9.5 M4 IzuOshima-O54 35 cm above -O55 10.0 M5 unknown-unnamed ash 30 cm below IzuOshima-O54; 5 cm above -O55 10 M3.7 Niijima-Hanshima? 15 cm below Niijimayama 10.1 M4 IzuOshima-O55 10.4 M4.1 Niijima-Shikinejima 50 cm below Tenjosan; 20 cm below Hanshima? 10.4 unknown-unnamed pumice between IzuOshima-O57 and -O58 10.5 M4 IzuOshima-O58 11 M3 Miyakejima-MiyakeShicho 35 cm below Okubo 11 unknown-unnamed glass between IzuOshima-O59 and -O60 11.3 M4 IzuOshima-O61 11.4 M4 Hachijojima-Mitsune4 100 cm below Miharataki 11.5 IzuOshima great unconformity around -O62; Younger Dryas? 12 M4.2 Hachijojima-HigashiHakuunzan 40 cm below Mitsune 4 12 M3.2 HigashiIzu-Akakubo 40 cm below Omuroyama; 35 cm above Sekiguchi 12 Fuji-Mishima lava 170 cm below -R1 13 M3.4 HigashiIzu-Komuroyama 50 cm below Omuroyama; 100 cm above Tanzawa 13 M4 Hachijojima-Mitsune 3 30 cm below HigashiHakuunzan 13.2 M4 Hachijojima-Mitsune 2 7 cm below Mitsune 3 14 M4.2 Niijima-Miyazukayama 35 cm below Shikinejima 14 M5 Niijima?-Awa 14 M5 unknown-unnamed pumice between IzuOshima-O62 and -O63 14.5 M4 Hachijojima-Mitsune 50 cm below Mitsune 2 14.5 M4 IzuOshima-O64 15 M4 Hachijojima-Loran 20 cm below Mitsune 1 15.9 M6.0 Asama-Hirahara 17.0 M5 unknown-unnamed ash between IzuOshima-O72 and -O73 17 M4.1 HigashiIzu-Hachikuboyama and Maruyama 100 cm below Kawagodaira 17 M4.6 Niijima-Akasakinomine 17 M4 Hachijojima-Karatakigawa 150 cm below Hachimanyama 17.1 M4 IzuOshima-O73 17.7 unknown-unnamed glass between IzuOshima-O75 and -O76 18 M4 Hachijojima-NakonoHana scoria cone 18.5 M4 IzuOshima-O81 19 M4.0 HigashiIzu-Sekiguchi and Inatori 110 cm below surface; 120 above Hachinoyama 19.0 M4 IzuOshima-O82 19.5 M4 IzuOshima-O84 19.8 M5 Hachijojima-Nakanogo scoria 5 cm above unnamed dacite 19.9 unknown-unnamed glass between IzuOshima-O85 and -O86 20.0 M4 IzuOshima-O86 20.0 M5 unknown-unnamed dacite intercalated between Nakanogo 20 Fuji-Kofuji hot lahar 21 M3.9 HigashiIzu-Hachigakubo and BabanoTaira 80 cm below Komuroyama; 290 cm above Tokyo 22 M4 Hachijojima-Kamikoo above Sueyoshi 22 M5 unknown-unnamed glass between IzuOshima-O92 and -O93 22.5 M4 IzuOshima-O93 23 M4 IzuOshima-Oj95 25 M4.5 Kozushima-Takodoyama and MatsuyamaBana 15 cm above Tanzawa 25 M1.3 HigashiIzu-NoborioS about 70 cm below Kawagodaira 25 M3.8 HigashiIzu-Jizodo 110 cm below Omuroyama; 15 cm above Tanzawa 26 M4.3 Niijima-Mineji 27 Fuji-Sagamino 1 immediately above Tanzawa 27.9 M6 unknown-unnamed rhyolite between Nakanogo and Sueyoshi 28.00 M8.3 Aira-Tanzawa 28.0 M6 Hachijojima-Sueyoshi intercalates Tanzawa 31 M4 Kozushima-Chichibuyama 15 cm below Tanzawa 31 M3.7 HigashiIzu-Kokuzange 70 cm below Jizodo 35.5 M4 Fuji-Susono 2 300 cm below surface; 15 cm above Susono 1 35 M3.0 HigashiIzu-Chikubo 85 cm below Tanzawa 36.99 M4 Fuji-Susono 1 200 cm above Hakone-CC4 37 M6.0 Sanbe-Ikeda immediately below Susono 1 38 M4.4 HigashiIzu-Hachinoyama 120 cm below Sekiguchi 39 M2 HigashiIzu-unnamed 1 42.5 M4.6 Hakone-CC4 30 cm above Susono 0 43 M4 Hakone-CC3 44 M4 Fuji-Susono 0 100 cm above Tokyo 45 M4 Hakone-CC2 47 M5.1 Hakone-CC1 above Sanshokuki 50.00 M6.9 Daisen-Kurayoshi 50 M5.1 Hakone-Sanshokuki above Tokyo 52 M6.1 Hakone-Tokyo 5 cm below Kurayoshi 55 M2.8 HigashiIzu-Numanokawa 56 M5 Hakone-Miura 70 cm below Tokyo 56 M3.9 HigashiIzu-Joboshi 50 cm below Tokyo 61 M5 Hakone-Anjin 80 cm below Miura 66 M2 HigashiIzu-unnamed 2 70 Kozushima-Menbo lava 72 M3.7 HigashiIzu-Oike and Koike 200 cm below Hachinoyama 78 M5.4 Fuji-Yoshioka 200 cm below Anjin; 25 cm above Obaradai 80 M5.7 Hakone-Obaradai 240 cm above Ontake 1 80 M2.7 HigashiIzu-Uchino 83 M6 Daisen-Namadake below Obaradai; 500 cm (conglomerate) above Aso-4 86 M2 HigashiIzu-unnamed 3 87.00 M8.4 Aso-4 400 cm (conglomerate) above Tozurahara 3 88 M4.6 Hakone-Da5 200 cm below Tokyo; 40 above Tozurahara 89 M2.9 HigashiIzu-Funabara 91 M6 unknown-Tozurahara 3 250 cm (conglomerate) above Ina 93 M6 Ontake-Ina 250 cm (conglomerate) above Tozurahara 94 M2.8 HigashiIzu-Takamuroyama 50 cm below Hakone-Da5 95 M7.5 Kikai-Tozurahara 25 cm above Ontake-1 99 M6.6 Ontake-1 10 cm above Hakone-KmP12 100 M4 Hakone-KmP12 8 cm above -KmP11 101 M4 Hakone-KmP11 11 cm above -KmP10 102 M5 Hakone-KmP10 10 cm above -KmP9 103.0 M7 Ata MIS5.4; between Hakone-KmP10 and -KmP9 103.5 M6 Hakone-Da4 2 cm below Ontake 1 103.5 M4 Hakone-KmP9 10 cm above -KmP8 103.5 M4.8 HigashiIzu-Ippekiko intercalates Hakone-Da4 104.0 M4 Hakone-KmP8 10 cm above -KmP7 105.0 M5.6 Hakone-KmP7 9 cm above -KmP6 105.5 M5 Hakone-KmP6 28 cm above -KmP5 107.5 M4.2 HigashiIzu-Marunoyama 20 cm below Hakone-Da4 108.0 M4 Hakone-KmP5 above -KmP4 109 M4 Ashitaka-Ohito Brown 175 cm below Hakone-Da4 109.0 M4 Hakone-KmP4 above -KmP3 109.5 M5 Hakone-KmP3 6 cm above -KmP2 110 M5 Hakone-KmP2 9 cm above -KmP1 111 M5 Hakone-KmP1 70 cm above -KlP13 115 M7 Aso-3 1 m (sand) below Ontake-1 117 M5.4 Hakone-KlP13 59 cm above -KlP12 121 M4 Ashitaka-Idenawa 2 beteween Hakone-KlP13 and -KlP12 122 Hakone-KlP12 17 cm above -KlP11 123 Ashitaka-Idenawa 1 between Hakone-KlP12 and -KlP11 124 M4 Hakone-Ohito Pink 40 cm below Ohito Brown 124 M5 Hakone-KlP11 13 cm above -KlP10 125 M5 Hakone-Ohito Yellow 2 50 cm below Ohito Brown 125 M5 Hakone-KlP10 11 cm above -KlP9 126 M6 Hakone-Da1 30 cm below Ohito Yellow 2 126 M5 Hakone-KlP9 12 cm above -KlP8 127 M5 Hakone-KlP8 20 cm above -KlP7 128 M5.8 Hakone-KlP7 10 cm above -KlP6 129 M5 Hakone-KlP6 42 cm above -KlP4 129 M3.8 HigashiIzu-Hinata 10 cm below Hakone-Da1; 10 cm above Hakone-KlP 131 M5 Hakone-Ohito Yellow 1 70 cm below -Da1 131 Hakone-KlP5 132 M5 unknown-Ohito Blue 132 M5 unknown-KlP4 32 cm above Hakone-KlP3 132 M4.8 HigashiIzu-Takatsukayama and Sukumoyama 134 M5 Hakone-KlP3 45 cm above -KlP2 137 M4 Hakone-KlP2 15 cm above -KlP1 138 M4 Hakone-KlP1 300 cm above -TAm5 142.5 M4.1 HigashiIzu-Togasayama 35 cm below Hakone-KlP4 150 M5 Hakone-TAu12 160 M5 Hakone-TAu2 163 M4 unknoen-TAu1 165 M5 Hakone-TAm7 170 M5 Hakone-TAm6 100 cm above -TAm5 178 M6.2 Hakone-TAm5 38 cm above -TAm4 181 M6 Hakone-TAm4 185 M6.0 Hakone-TAm1 190 M6 Hakone-TB13 210 M5 unknown-TB9 225 M5 unknown-TB8 228 M5 Hakone-TB7 232 M5 unknown-TB5 240 M5.7 Hakone-TB1 250.0 M7 Ata-Torihama MIS8.2; between Hakone-TCu3 and -TCu2 255 M6.0 Hakone-TCu1 above Yatsugatake-BBP 260 M6.0 Yatsugatake-GoP1 near Hakone-TCl or TDu 262 M8 Aso-1.0 290 M5 Hakone-TCl4 335 M6 Suiendani-Negoya 1 near Hakone-TDu1 335 M6 Suiendani-Yabu1 30 cm (marine sand) below Yabu 5 335 M5 Suiendani-A5 340.0 M7 Kakuto MIS10 345 M5 Suiendani-A4 350 M6 Suiendani-A3 359.9 M6 Yatsugatake-Jizodo 12 40 m (marine sand) above Suiendani-TE5 360 M6 Suiendani-A2 370 M6 Suiendani-a1 390 M6 Akagi-Moka 419.9 M5 Kurofuji?-unnamed pumice immediately above Suiendani-TE5 420.0 M7 Suiendani-TE5 MIS11 430 Minamizaki cone 440 M7 Kyushu-Jizodo 1 20 m (marine sand) below Suiendani-TE5 480 unknown-Kasamori 5 500 Hakone?-ShimoKurata above Sakura 500 M7 unknown-Kasamori 7.3 530 M6 unknown-Nemoto 13 530 unknown-Kasamori 10 540.0 M8 Kobayashi-Sakura (Kasamori 11) MIS13.3; 550 M6 unknown-Nemoto 14 570 M6 unknown-Nemoto 16 620 M7 unknown-Kasamori 18 (Ashigakubo) 650.0 M7 Kaisho-Toriitoge (Kasamori 22) MIS16 670 M7 unknown-Chonan 1 685 M7 unknown-Chonan 2 (Kagiana, Toga) 700 M7 unknown-Chonan 3 700 M7 unknown-Tajima 700 Iwabuchi andesite lava between Kagiana and Ozumori 720 M7 unknown-Kakinokidai 1 740 M7 unknown-Kakinokidai 2.6A 750 M7 Usami volcano 750 M7 unknown-Kakinokidai 2.6B 770 M7 unknown-Kokumoto 1 normal magnetism 780.0 B/M boundary 790 M7 unknown-Kokumoto 3 reverse magnetism 800 M5 Hatazawa-Ikudo ignimbrite reverse magnetism 840 M7 unknown-Kokumoto5A (Ozumori) reverse magnetism 870.0 M8 Shishimuta-Azuki (Kokumoto 6C) 1000 M8 Shishimuta-Pink (Otadai 7) 1750 M8.2 Hida-Fukuda (Kiwada 38)