"ka" means 1000 years ago from 2000AD.
"M" (Magnitude) is defined by M = log m - 7, where m is the mass of magma in kg.
| Age(ka) | Volcano Tephra | M | Stratigraphy | Remarks | |||||
| 0.004 | Komagatake | 1 | 1996.3.5 | ||||||
| 0.058 | Komagatake | 3 | 1942 | ||||||
| 0.062 | Komagatake | 2 | 1938 | ||||||
| 0.063 | Komagatake | 2 | 1937 | ||||||
| 0.065 | Komagatake | 2 | 1935 | ||||||
| 0.071 | Komagatake-a | 4.5 | 駒ケ岳c1の上4cm | Ko-a，1929，出来澗崎お宮52 | |||||
| 0.077 | Komagatake | 2 | 1923 | ||||||
| 0.078 | Komagatake | 2 | 1922 | ||||||
| 0.081 | Komagatake | 2 | 1919 | ||||||
| 0.095 | Komagatake | 2 | 1905 | ||||||
| 0.112 | Komagatake | 2 | 1888 | ||||||
| 0.144 | Komagatake-c1 | 4.2 | 駒ケ岳dの上3cm | Ko-c，1856，出来澗崎お宮52 | |||||
| 0.216 | Komagatake | 2 | 1784 | ||||||
| 0.235 | Komagatake | 2?? | 1765 | ||||||
| 0.306 | Komagatake | 2? | 1694 | ||||||
| 0.360 | Komagatake-d | 5.4 | 有珠bの下0.5cm，樽前aの下0.7cm | Ko-c2/d/クルミ坂岩なだれ，1640，伊達市西関内町113，イラ沢橋西50，Me-a2日出西18南9（4） | |||||
| 1.6 | Komagatake-e | 2 | 苫小牧の下3cm | Ko-e；イラ沢橋西50，水蒸気爆発または津波によるKo-fの再堆積 | |||||
| 3 | Komagatake-f | 5 | Ko-eの下20cm，苫小牧の下7cm | Ko-f，イラ沢橋西50，日高の川向牧場105 | |||||
| 6 | Komagatake-g | 4 | 駒ケ岳dの下45cm | Ko-g，中ノ川橋西46 | |||||
| 17 | Komagatake-h1 | 5 | 濁川の下30cm | Ko-h1，岩なだれ，イラ沢橋西50 | |||||
| 35 | Komagatake-h2 | ||||||||
