[Rockhounds] 'The difference between alarming and catastrophic': Cascadia megafault has 1 especially deadly section, new map reveals

[Lanny Ream]

I haven’t looked at the video, so can’t be sure what it is about. I suspect though it is not about an eruption causing damage. It is most likely about a large mud flow. The surface of Mt. Rainier is covered with altered volcanic rock that is now frozen. Warm the mountain up a little, the ice melts and a very large section of this altered rock, now mud, rocks and ice gives up its perch to the effects of gravity and goes rolling down the valleys. In the past, these have reached Puget Sound, leaving debris 20-50 feet or more deep in a wide path back up to the mountain. 

That is what the big threat is from Mt. Rainier. This could happen even if the mountain didn't become very active, but only got a little magma movement and maybe not even spit out any ash.

> On Jun 9, 2024, at 8:19 AM, Robby82 <constantlywatchn at gmail.com> wrote:
> 
> I have lived in the Puget Sound area (Tacoma-Everett area) all my 76 years,
> and there has been one major event in my time. Namely, the St. Helen's
> eruption. Notice, that most (if not all) of the major eruptions of the
> Cascade Mountains have blown to the East. Eastern WA is covered with lava
> flows. On the West side, very little lava and ash. For quakes, my only
> advice is to have food and water stored. Also, live inland near or on top
> of a hill for tsunamis and not close to a river, to avoid pyroclastic flows
> from an eruption. I have worried less about these all my life than being in
> a nuclear target zone.
> Robby of MLT, WA
> 
> On Sat, Jun 8, 2024 at 4:12 PM Glen Miller <miller3987 at gmail.com> wrote:
> 
>> There's a good video lecture on Youtube of the potential effects of a large
>> landslide
>> from Mt. Rainier from an earthquake or eruption. Lots of development would
>> be
>> wiped out.
>> 
>> 
>> On Sat, Jun 8, 2024 at 2:22 PM Tim Fisher <nospam at orerockon.com> wrote:
>> 
>>> Well we're all going to die anyway, may as well be competing for food
>> with
>>> a
>>> cougar. Then again we're south of WA where they predict the largest
>> quakes
>>> :D
>>> 
>>> -----Original Message-----
>>> From: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> On Behalf
>> Of
>>> Jeffrey Joy
>>> Sent: Friday, June 7, 2024 2:36 PM
>>> To: Rockhounds Submissions <rockhounds at rockhounds.drizzle.com>
>>> Subject: [Rockhounds] 'The difference between alarming and catastrophic':
>>> Cascadia megafault has 1 especially deadly section, new map reveals
>>> 
>>> 
>>> 
>> https://www.livescience.com/planet-earth/geology/the-difference-between-alar
>>> 
>>> 
>> ming-and-catastrophic-cascadia-megafault-has-1-especially-deadly-section-new
>>> -map-reveals
>>> <
>> https://www.livescience.com/planet-earth/geology/the-difference-between-alarming-and-catastrophic-cascadia-megafault-has-1-especially-deadly-section-new-map-reveals
>>> 
>>> 
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