Home Forums Hunting & Shooting Hunter's Campfire Could Mt. Hood Be The First Volcano To Erupt On The West Coast?

No, I'm not. I was being half sarcastic. We used to look for thunder eggs over around my grandparent's place in Madras. They had some of those big round lava balls like that one around. We would call them giant thunder eggs. Thunder eggs are found in the ash layers.

if Yellowstone blows, it will be the end.

We had ash from Mt St Helens on our vehicles -
In Los Alamos, NM.
Southwest of Los Alamos is the Valles Caldera. I've been told that when it blew, it was taller than Mt Everest.
How they figured THAT out, I'll never know - but the crater is miles across and higher altitude than Los Alamos, which is just over 7000 ft.
Grants has some of the most impressive lava flows, tubes, and even ice caves around.
NM is highly volcanic. I believe most of the west is.

There needs to be liberals sacrificed.

I was stationed at Ft. Lewis when St. Helens blew. Had some of our dudes in the south Ranier training area at the time. A pretty wild few weeks back then!

Utube has a lecture series dealing with the Pacific Northwest.
The last I saw dealt with "Ghost Volcanoes" those that once existed but died and eroded away.
The Cascade range is forty million years old, but the average Volcano exists for a average of two million years.
Many of the old ones are gone but they left traces, even totally erased they can be located by past lava flows.
In fact, when you see Granite you're seeing rock that was formed deep below a Volcano.

You can see that this one is sitting on top of the soil so it had to have been formed much later than the mountains around it. It's on a steep ridge so it could have landed higher up and later rolled to where it is now. It would have made a pretty good divot if it had landed where it is although erosion could have leveled out the ground around it. It still had to have got over that 10k ridge, though.

Mt.Mazama ( Crater Lake ) in our county, was estimated over 23,000 feet in elevation. Now the lake level is around 6100 ft, with surrounding peaks around 8k to 9k. Not only did the Mountain loose over ten thousand feet in elevation, it left a hole forming the deepest lake in the U.S.! To put that in perspective, Mount Mitchell in the east, would be but a bump at the base! Mt. Rainer, and Mt.Shasta in all their splender, would also be bumps! Amazing to think about if you've ever seen either of those mountains!

RockChuck:



I suspect Harry's demise was quite swift and sure.

As to displaced rocks, another potential mode is glacial transport or events like the Missoula floods. One sees some of Montana's rocks well up Oregon Deschutes River Canyon, and near Eugene in our Willamette Valley. Likely encased in ice and deposited 5 to 600 ft above the present flood plains. Done a little traveling around FlatHead Lake, and there are signs in several locals denoting high water makes a couple thousand feet above the valley floor. Those had to be epic events when those ice dams broke and downstream destruction was again probably quite swift and sure.

Heym06:

Did a ton of reading years back when investigating some soils deposition patterns. Going from memory that might be failing, but seem to recall an estimate of about 14 cubic miles of material being ejected in the Crator Lake blast.

Pyroclastic material. That one is a giant tephra ball.

Dick- if your local? Univ geology dept. doesn’t know about that one, they may appreciate that info.

Any of these volcano smoking with pressure building?

Northern AZ too. Hundreds of cinder comes from Williams to NW of Flagstaff. The ones in Williams are the oldest and the ones near Flagstaff the youngest. Last eruption was about 1000 years ago. Had a friend whose dad was a geophysicist at NAU who mapped out heat flow at Yellowstone as part of his thesis. He told me that if the water table wasn’t so low on the Kaibab Plateau there could very well be geisers in Northern AZ given the amount of heat.

Not currently.

And that was only 7,700 year ago. I would guess that it put out a few emissions when it blew. When you drive from Roseburg to Diamond Lake the road has road cuts through ash deposits that are many feet deep.

There are active fumaroles on top of My Hood. Smoke and steam can sometimes be seen from the valley below.

https://pubs.usgs.gov/fs/2000/fs060-00/

when stationed at Madigan on Ft Lewis in 1977 and 78, me and some of my buddies went down and climbed Mt St. Helen's several times on the weekend...

it really was a fairly easily climb...

was living in Minnesota when it blew... it was hard thinking 1300 ft or so of the top of it was gone... it also had some pretty thick forest around it...
beautiful place before it blew.. afterwards, not so much...

Hell, we go people worrying about volcanos blowing, DemocRATS running everything on the Entire West Coast and in DC..

Warnings the Chinese are going to take us over... the borders flooded with illegal aliens with Covid infections...

Looks like we are ALL just going to die... its the end of the world...

except at Nancy Pelosi's house in San Fran...

Yeah, but noting out of the ordinary.