US-WASHINGTON
This volcano erupted on -1860 B.C. in UnitedStates where it released a signifant amount of explosivity , reaching a Volcanic Explosivity Index of 6 (VEI: 6). The VEI scale was developed by the USGS and is open-ended with the largest volcanoes in history given a magnitude 8. A value of 0 is given for non-explosive eruptions . This particular volcano, named St.Helens is classified as a historical stratovolcano and is perched at an elevation of 2549ft.
Surface Geology
Underlying geological composition for the surrounding area.
Alaska Peninsula and Aleutian Islands - porphyry copperTertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands
Pacific Margin - porphyry copper
Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia.
Surface Lithology
Qv - Igneous - VolcanicYoungest volcanic rocks
Related USGS Publications
70159748 - 2016 - Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust70142817 - 2015 - Basement and regional structure along strike of the Queen Charlotte Fault in the context of modern and historical earthquake ruptures
sir20155110 - 2015 - 2013 volcanic activity in Alaska: summary of events and response of the Alaska Volcano Observatory
Latest Volcano Events
Recent Volcano activity from around the globe.
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Minor mag. 3.8 earthquake - 11 km al Este de Puerto Armuelles, Panama. on Thursday, 25 April
2019-04-25T13:27:38Z
Magnitude: 3.8. Depth: 25.0 km. Epicenter latitude / longitude: 8.36°N / 82.839°W (Panama) Nearest volcano: Baru (60 km) Primary data source: RSN -
Nasa discover mysterious landslide near alien volcano on the surface of Mars
2019-04-25T13:07:30Z
Its Mars Reconnaissance Orbiter snapped images of Cerberus Fossae, a set of two gaping chasms near a volcano called Elysium Mons. The images ... -
Light mag. 4.8 earthquake - New Zealand on Thursday, 25 April
2019-04-25T12:16:43Z
Nearest volcano: Raoul Island (206 km) Primary data source: GEONET (NZ) Estimated released energy: 1*10^12 J (278 MWh / 239 tons of TNT) [learn ... -
Moderate mag. 5.0 earthquake - Mindanao, Philippines on Thursday, 25 April
2019-04-25T11:16:30Z
Depth: 10.0 km. Epicenter latitude / longitude: 8.06°N / 126.77°E (Philippines) Nearest volcano: Leonard Range (110 km) Primary data source: BMKG -
Caramel Volcano Cookies [Vegan]
2019-04-25T11:15:00Z
These vegan caramel volcano cookies are out of this world!!! They are gooey, so delicious and packed with rich chocolate & vegan caramel! -
NASA to Seek Iron-Spewing Volcanoes at Psyche
2019-04-25T11:00:03Z
Not all asteroids are piles of rocky rubble as seen in Hollywood space operas and sci-fi video games. Some are made of much sterner stuff: iron and ...
| Nearby Tsunamis | |
|---|---|
|
7 mag |
N.MEXICO 11-29-1852 T00:00:00 |
|
5.7 mag |
S.CALIFORNIA 01-01-1927 T08:17:00 |
|
5.9 mag |
S.CALIFORNIA 05-27-1862 T20:00:00 |
|
6.3 mag |
S.CALIFORNIA 03-11-1933 T01:54:7.8 |
|
6.4 mag |
S.CALIFORNIA 12-25-1899 T12:25:00 |
|
5.2 mag |
S.CALIFORNIA 08-31-1930 T00:40:38 |
|
6 mag |
S.CALIFORNIA 07-11-1855 T04:15:00 |
|
7.5 mag |
S.CALIFORNIA 12-21-1812 T19:00:00 |
|
6.7 mag |
WESTCOAST,USA 01-17-1994 T12:30:55.3 |
|
7.3 mag |
S.CALIFORNIA 11-04-1927 T13:50:43 |
| Volcano Measurement | |
|---|---|
| |
| Volcano Stats | |
|---|---|
| year | -1860 |
| id | 11 |
| location | US-Washington |
| time | -1860 B.C. |
| latitude | 46.2 |
| type | Stratovolcano |
| vei | 6 |
| status | Historical |
| elevation | 2549 |
| name | St.Helens |
| longitude | -122.18 |
| country | UnitedStates |