Volcano | Eruption (year) | Fe (mg/kg) | CA S (mg/kg) | Fe/S | CA/CAOb | lnCA/CAO | Timec (yr) |
Mount Ontake, Japan | 2014 | 33,312 | 29,531 | 1.13 | 1 | 0 | 0 |
Kasatochi, Alaska | 2008 | 157,942 | 14,572 | 10.8 | 0.493 | −0.70 | 6 |
Lombok, Indonesia | 1994 | 60,961 | 701 | 87.0 | 0.0240 | −3.74 | 20 |
Mount Pinatubo, Philippines | 1991 | 73,857 | 385 | 191.8 | 0.0130 | −4.33 | 23 |
Mount St. Helens, Washington | 1980 | 23,235 | 955 | 24.3 | 0.0323 | −3.43 | 34 |
Volcanic stone |
|
|
|
|
|
|
|
Mount Baekdua | 969 | 24,368 | 191 | 127.6 | - | - | - |
Soil |
|
|
|
|
|
|
|
Tongyoung, Korea | - | 26,014 | 1350 | 19.3 | - | - | - |