Volcano Name |
VNUM |
Latitude |
Longitude |
Region |
Sub-region |
Volcano Type |
Unit name |
Eruption start day |
Eruption start month |
Eruption start year |
Year BP |
Date Error |
Dating technique |
Date quality |
Alternate values |
Tephra fall deposit volume |
Qualifier |
Error |
Alternate values |
Tephra fall DRE volume |
Qualifier |
Error |
Quality |
Alternate values |
Ignimbrite deposit volume |
Qualifier |
Error |
Quality |
Alternate values |
Ignimbrite DRE volume |
Qualifier |
Error |
Quality |
Alternate values |
Primary intra caldera deposit volume |
Qualifier |
Error |
Quality |
Alternate values |
Primary intra caldera DRE volume |
Qualifier |
Error |
Quality |
Alternate values |
Bulk deposit volume |
Qualifier |
Error |
Quality |
Alternate values |
Bulk DRE volume |
Qualifier |
Error |
Quality |
Alternate values |
Magma Type |
Magma Density |
Magnitude |
Qualifier |
Derivation |
Alternate values |
VEI |
Qualifier |
Derivation |
Alternate values |
Column height Min |
Column height Max |
Column height Average |
Alternate values |
Intensity Min |
Intensity Max |
Intensity Average |
Alternate values |
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
1980 AD |
27 |
3 |
1980 |
-30 |
|
Historical records |
High quality |
No |
1.2 |
|
|
No |
.3 |
|
|
? |
No |
.14 |
|
|
? |
No |
.05 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
1.3 |
|
|
1 |
Yes |
.44 |
|
|
1 |
Yes |
Dacite |
|
4.8 |
|
Literature |
No |
5 |
|
Literature |
No |
|
|
|
No
|
|
11.06 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
T (Goat Rocks) |
15 |
01 |
1800 |
150 |
|
Dendrochronology |
High quality |
No |
1.5 |
|
|
No |
.4 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.5 |
|
|
3 |
Yes |
.4 |
|
|
3 |
No |
Dacite |
|
5 |
|
Calculated |
No |
5 |
|
Literature |
No |
|
16 |
|
No
|
|
10.19 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
We (Kalama) |
15 |
01 |
1482 |
468 |
|
Dendrochronology |
High quality |
No |
1.5 |
|
|
No |
.4 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.5 |
|
|
3 |
Yes |
.4 |
|
|
3 |
No |
Dacite |
|
5 |
|
Calculated |
No |
5 |
|
Literature |
No |
|
21 |
|
No
|
|
10.64 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Wn (Kalama) |
15 |
01 |
1480 |
470 |
|
Dendrochronology |
High quality |
No |
7.7 |
|
|
No |
2 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7.7 |
|
|
3 |
No |
2 |
|
|
3 |
No |
Dacite |
|
5.7 |
|
Calculated |
No |
5 |
|
Literature |
No |
|
24 |
|
No
|
|
10.7 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Ps/Pu (Pine Creek) |
|
|
-530 |
2480 |
|
Radiocarbon (corrected) |
Low quality |
No |
1.2 |
|
|
No |
.3 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.2 |
|
|
3 |
No |
.3 |
|
|
3 |
No |
Dacite |
|
4.9 |
|
Calculated |
No |
5 |
|
Literature |
No |
11 |
15 |
|
No
|
9.54 |
10.06 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Ye (Smith Creek) |
|
|
-1770 |
3720 |
100 |
Tephrochronology |
Low quality |
No |
3.5 |
|
|
No |
.9 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5 |
|
|
3 |
Yes |
.9 |
|
|
3 |
Yes |
Dacite |
|
5.4 |
|
Calculated |
No |
5 |
|
Literature |
No |
|
23 |
|
Yes
|
|
10.6 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Yn (Smith Creek) |
|
|
-1860 |
3810 |
|
Radiocarbon (corrected) |
Low quality |
No |
15.3 |
|
|
No |
4 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
15.3 |
|
|
3 |
Yes |
4 |
|
|
3 |
Yes |
Dacite |
|
6 |
|
Calculated |
No |
6 |
|
Literature |
No |
|
31 |
|
No
|
|
11 |
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Yb (Smith Creek) |
|
|
-2340 |
4290 |
|
Radiocarbon (corrected) |
Low quality |
No |
1.2 |
|
|
No |
.3 |
|
|
? |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.2 |
|
|
3 |
Yes |
.3 |
|
|
3 |
No |
Dacite |
|
4.9 |
|
Calculated |
No |
5 |
|
Literature |
No |
|
22 |
|
No
|
|
10.48 |
|
Yes
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
J (Jg, Jb, Jy) (Swift Creek) |
|
|
|
12800 |
|
Radiocarbon (corrected) |
Medium quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.32 |
|
|
1 |
No |
1.8 |
|
|
1 |
No |
Andesite-Dacite |
|
5.6 |
|
Calculated |
No |
5 |
|
Calculated |
No |
|
|
|
No
|
|
|
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
J (Jg, Jb, Jy) (Swift Creek) |
|
|
|
12800 |
|
Radiocarbon (corrected) |
Medium quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.32 |
|
|
1 |
No |
1.8 |
|
|
1 |
No |
Andesite-Dacite |
|
5.6 |
|
Calculated |
No |
5 |
|
Calculated |
No |
|
|
|
No
|
|
|
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
S (So, Sg) (Swift Creek) |
|
|
|
16000 |
|
Radiocarbon (corrected) |
Medium quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.6 |
|
|
1 |
No |
1.5 |
|
|
1 |
No |
Dacite |
|
5.6 |
|
Calculated |
No |
5 |
|
Calculated |
No |
|
|
|
No
|
|
|
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
M (Mm, Mp, Mc, Mo, Mg) (Cougar) |
|
|
|
20000 |
|
Not Available |
Low quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.04 |
< |
|
1 |
No |
.85 |
< |
|
1 |
No |
|
|
5.3 |
< |
Calculated |
No |
5 |
|
Literature |
No |
|
|
|
No
|
|
|
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Cb (Ape Canyon) |
|
|
|
40000 |
|
Radiocarbon and stratigraphy |
Low quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
>= |
|
0 |
No |
.4 |
>= |
|
0 |
No |
Dacite |
|
5.3 |
|
Calculated |
No |
5 |
? |
Literature |
No |
|
|
|
No
|
|
|
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
C (Cs, Cy, Cm, Cw, Ct) (Ape Canyon) |
|
|
|
42500 |
|
Stratigraphy |
Low quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10.32 |
|
|
1 |
No |
4.3 |
|
|
1 |
No |
Dacite |
|
6 |
|
Calculated |
Yes |
|
|
|
|
|
|
|
No
|
|
|
|
No
|
St. Helens |
321050 |
46.2 |
-122.1833333 |
Canada and Western USA |
USA (Washington) |
Stratovolcano(es) |
Summer Lake OO tephra |
|
|
|
300000 |
|
Stratigraphy |
Low quality |
No |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.4 |
> |
|
1 |
No |
1 |
> |
|
1 |
No |
|
|
5.4 |
|
Calculated |
No |
5 |
|
Literature |
No |
|
|
|
No
|
|
|
|
No
|