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-   -   Technotronic, Volcanics, and related Geology (https://www.mersenneforum.org/showthread.php?t=24437)

Uncwilly 2020-05-19 14:39

[QUOTE=kladner;545847]The Mt Saint Helens catastrophic eruption was 40 years ago, today.[/QUOTE]I visited the area a number of years ago. Most impressive. Visit Crater Lake and realise that it was a similar mountain before it blew several 1000s of feet of its top off.:shock:

kladner 2020-05-19 15:36

[QUOTE=Uncwilly;545848]I visited the area a number of years ago. Most impressive. Visit Crater Lake and realise that it was a similar mountain before it blew several 1000s of feet of its top off.:shock:[/QUOTE]
Crater Lake, aka Mt Mazama, is a fascinating case study. The caldera walls show quite a number of eruptive conduits.
[url]http://www.craterlakeinstitute.com/[/url]
An amazing amount of eruptive history is described based on the layers of ejecta. The Pacific Northwest is fortunate that the 1980 St Helens eruption did not emulate the Mazama blowout.

xilman 2020-05-19 16:02

[QUOTE=kladner;545847]The Mt Saint Helens catastrophic eruption was 40 years ago, today.[/QUOTE]Sky condition: Black & smelly.

Nick 2021-04-09 15:51

La Soufrière on St. Vincent is erupting.
The website of the local monitoring agency is apparently overloaded.
Their Twitter communications are here:
[URL]https://twitter.com/uwiseismic[/URL]

chalsall 2021-04-10 14:55

[QUOTE=xilman;545854]Sky condition: Black & smelly.[/QUOTE]

Yeah. We're 190 km to the east of Saint Vincent, and it is so dark it is as if it is dusk.

The cats are freaking out! So are some of the humans...

Nick 2021-04-10 17:40

Yes, you're getting the volcanic ash - but not the pyroclastic flows!

xilman 2021-04-10 18:49

[QUOTE=chalsall;575620]Yeah. We're 190 km to the east of Saint Vincent, and it is so dark it is as if it is dusk.

The cats are freaking out! So are some of the humans...[/QUOTE]Were you there back in 1979?

xilman 2021-04-10 18:52

[QUOTE=chalsall;575620]Yeah. We're 190 km to the east of Saint Vincent, and it is so dark it is as if it is dusk.

The cats are freaking out! So are some of the humans...[/QUOTE]Were you there back in 1979?

According to the Beeb "Local media have also reported increased activity from Mount Pelee on the island of Martinique, north of St Vincent."

Those with a knowledge of history might look upon that with interest.

chalsall 2021-04-10 19:04

[QUOTE=xilman;575638]Were you there back in 1979?[/QUOTE]

Nope. I immigrated in 2001.

But friends of mine were. It was, reportedly, amazingly bad!

LaurV 2021-04-11 05:22

[QUOTE=xilman;575638]Were you there back in 1979?[/QUOTE]

[QUOTE=xilman;575639]Were you there back in 1979?[/QUOTE]
Getting old? :paul:
:razz:

xilman 2021-04-11 07:57

[QUOTE=LaurV;575665]Getting old? :paul:
:razz:[/QUOTE]True.

The real reason is that I hit reply, not edit.


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