Sampling point of the HS-1 (Tomakomai, Hokkaido) | 
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Microphotograph of glass particles (HS-3 sample, 0.15-0.3mm) |
Particle size distribution list of all samples.
| No. | name | Sampling place | name of pyroclastic deposit | Age | Chemical composition | XRD pattern | DTG pattern |
|---|---|---|---|---|---|---|---|
| 001 | HS-1 | Tomakomai, Hokkaido | Shikotsu pumice flow | 30,000 | - | - | - |
| 002 | HS-2 | Chitose, Hokkaido | Shikotsu pumice flow | 30,000 | - | - | - |
| 003 | HS-3 | Chitose, Hokkaido | Shikotsu pumice flow | 30,000 | in sheet | in sheet | in sheet |
| 004 | HS-4 | Minami-ku, Sapporo, Hokkaido | Shikotsu pumice flow | 30,000 | - | - | - |
| 005 | HM-1 | Ohtaki, Usu-gun, Hokkaido | Monzentohge pumice flow | 26,000 | - | - | - |
| 006 | HT-1 | Date, Hokkaido | Tohya pumice flow (IV) | 15,000 | in sheet | in sheet | in sheet |
| 007 | HT-2 | Date, Hokkaido | Tohya pumice flow (II) | 15,000 | - | - | - |
| 008 | HT-3 | Date, Hokkaido | Tohya pumice flow (V) | 15,000 | - | - | - |
| 009 | HK-1 | Kitami, Hokkaido | Kutcharo pumice flow (P3) | 30,000 | in sheet | in sheet | in sheet |
| 010 | HK-2 | Kitami, Hokkaido | Kutcharo pumice flow (P3) | 30,000 | - | - | - |
| 011 | HK-3 | Bihoro, Abashiri-gun, Hokkaido | Kutcharo pumice flow (KP2) | 30,000 | - | - | - |
| 012 | HK-4 | Bihoro, Abashiri-gun, Hokkaido | Kutcharo pumice flow (KP4) | 30,000 | - | - | - |
| 013 | HK-5 | Tsubetsu, Abashiri-gun, Hokkaido | Kutcharo pumice flow (Pf) | 30,000 | - | - | - |
| 014 | HV-1 | Ashoro, Ashoro-gun, Hokkaido | Nakaashoro vitric tuff | millions | - | - | - |
| 015 | HV-2 | Ashoro, Ashoro-gun, Hokkaido | Nakaashoro vitric tuff | millions | - | - | - |
| 016 | HV-3 | Ashoro, Ashoro-gun, Hokkaido | Kamiaikappu vitric tuff | millions | - | - | - |
| 017 | HV-4 | Honbetsu, Nakagawa-gun, Hokkaido | Urahorozaka vitric tuff | millions | - | - | - |
| 018 | HV-5 | Honbetsu, Nakagawa-gun, Hokkaido | Nishinaka vitric tuff | millions | - | - | - |
| 019 | HV-6 | Ikeda, Nakagawa-gun, Hokkaido | Nishinaka vitric tuff | millions | - | - | - |
| 020 | HV-7 | Makubetsu, Nakagawa-gun, Hokkaido | Sarubetsu vitric tuff | millions | in sheet | in sheet | in sheet |
Particle Size Distribution (wt%).
| No. | name | -0.038mm | -0.075mm | -0.15mm | -0.3mm | -0.6mm | -1.18mm | -2.36mm | -4.75mm |
|---|---|---|---|---|---|---|---|---|---|
| 001 | HS-1 | 17.5 | 28.4 | 45.5 | 59.6 | 70.0 | 78.4 | 85.6 | 91.5 |
| 002 | HS-2 | 16.3 | 22.0 | 31.9 | 44.6 | 60.0 | 76.2 | 85.2 | 92.4 |
| 003 | HS-3 | 16.5 | 24.2 | 35.9 | 48.3 | 60.5 | 73.1 | 83.5 | 91.4 |
| 004 | HS-4 | 18.8 | 31.5 | 50.7 | 66.7 | 78.5 | 87.5 | 93.7 | 97.6 |
| 005 | HM-1 | 8.1 | 18.4 | 38.5 | 57.6 | 71.1 | 81.1 | 88.7 | 94.6 |
| 006 | HT-1 | 14.0 | 21.3 | 29.8 | 36.5 | 43.6 | 53.8 | 67.2 | 79.6 |
| 007 | HT-2 | 18.0 | 28.7 | 45.1 | 59.3 | 70.0 | 80.5 | 89.8 | 95.8 |
| 008 | HT-3 | 22.1 | 32.8 | 49.5 | 65.0 | 75.6 | 85.5 | 93.3 | 97.8 |
| 009 | HK-1 | 11.1 | 22.6 | 39.6 | 54.6 | 69.8 | 84.7 | 92.4 | 96.2 |
| 010 | HK-2 | 6.1 | 15.9 | 32.0 | 47.0 | 62.9 | 79.5 | 87.8 | 92.3 |
| 011 | HK-3 | 11.0 | 21.8 | 37.1 | 50.2 | 63.5 | 78.1 | 86.8 | 91.8 |
| 012 | HK-4 | 13.9 | 21.5 | 32.7 | 45.7 | 59.8 | 76.1 | 84.0 | 89.1 |
| 013 | HK-5 | 17.4 | 29.1 | 46.3 | 63.0 | 79.6 | 92.4 | 98.1 | 99.8 |
| 014 | HV-1 | 17.1 | 29.6 | 47.7 | 63.5 | 75.1 | 86.3 | 94.4 | 98.1 |
| 015 | HV-2 | 24.0 | 32.5 | 42.8 | 52.1 | 61.6 | 76.2 | 88.5 | 95.9 |
| 016 | HV-3 | 21.7 | 30.4 | 40.4 | 49.4 | 58.7 | 73.0 | 87.7 | 96.6 |
| 017 | HV-4 | 20.9 | 30.5 | 48.1 | 62.6 | 73.5 | 87.4 | 93.5 | 95.4 |
| 018 | HV-5 | 7.9 | 16.4 | 36.5 | 59.3 | 77.1 | 90.9 | 96.1 | 98.0 |
| 019 | HV-6 | 4.3 | 10.3 | 31.1 | 54.4 | 82.3 | 96.3 | 99.6 | 100.0 |
| 020 | HV-7 | 5.3 | 11.0 | 31.0 | 53.7 | 72.1 | 85.5 | 93.0 | 96.8 |