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Just got back from Geology research program in Yellowstone: Ask me a question.
silversides staff
Truth Prevails
User ID: 148291
05-20-2019 06:15 AM

Posts: 13,589




Post: #136
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
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Duncan have you ever heard of Death Gulch in Yellowstone National Park?

In the early days of Yellowstone it had deadly gas eruptions.

Since that time it has become dormant. Although it still gives off some gas.

The Norris Geyser basin is another place that can kill with gas although it is very rare.

-------------------------------

Are Yellowstone's Gases Dangerous?
https://www.nationalparkstraveler.org/20...-dangerous

-------------------------------

Poison gas kills five bison in Yellowstone
https://www.bozemandailychronicle.com/ne...90d02.html

-------------------------------

DEATH GULCH, A NATURAL BEAR-TRAP.
By T. A. JAGGAR, Jr., Ph. D.
https://en.wikisource.org/wiki/Popular_S..._Bear-Trap

Anu
[Image: yellowstonemountainlionnps2019-660x330.jpg]
(This post was last modified: 05-20-2019 06:21 AM by silversides.) Quote this message in a reply
UnAcceptance
Registered User
User ID: 501178
05-20-2019 06:21 AM

Posts: 2,123




Post: #137
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
Duncan, were there places that were "off limits" that you could record from a distance?
And why was the reason that those places were "off limits"?
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LoP Guest
lop guest
User ID: 481893
05-20-2019 07:54 AM

 




Post: #138
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
Yo this is Volcano Dogg.Ask me any questions about Yellowstone.
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LoP Guest
lop guest
User ID: 481893
05-20-2019 08:00 AM

 




Post: #139
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
silversides  Wrote: (05-20-2019 06:15 AM)
Duncan have you ever heard of Death Gulch in Yellowstone National Park?

In the early days of Yellowstone it had deadly gas eruptions.

Since that time it has become dormant. Although it still gives off some gas.

The Norris Geyser basin is another place that can kill with gas although it is very rare.

-------------------------------

Are Yellowstone's Gases Dangerous?
https://www.nationalparkstraveler.org/20...-dangerous

-------------------------------

Poison gas kills five bison in Yellowstone
https://www.bozemandailychronicle.com/ne...90d02.html

-------------------------------

DEATH GULCH, A NATURAL BEAR-TRAP.
By T. A. JAGGAR, Jr., Ph. D.
https://en.wikisource.org/wiki/Popular_S..._Bear-Trap

Death Gulch just had a EQ
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LoP Guest
lop guest
User ID: 501257
05-20-2019 08:02 AM

 




Post: #140
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
LoP Guest  Wrote: (05-20-2019 07:54 AM)
Yo this is Volcano Dogg.Ask me any questions about Yellowstone.

How long til it blows, like proper pyroclastic surge class?
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LoP Guest
lop guest
User ID: 481711
05-20-2019 09:30 AM

 




Post: #141
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
LoP Guest  Wrote: (05-20-2019 08:02 AM)
LoP Guest  Wrote: (05-20-2019 07:54 AM)
Yo this is Volcano Dogg.Ask me any questions about Yellowstone.

How long til it blows, like proper pyroclastic surge class?

See the other thread for real information
Quote this message in a reply
LoP Guest
lop guest
User ID: 501257
05-20-2019 09:31 AM

 




Post: #142
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
LoP Guest  Wrote: (05-20-2019 09:30 AM)
See the other thread for real information
Link plox?
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Old Whatshisname staff
retired aerospace bureaucrat
User ID: 501531
05-20-2019 03:04 PM

Posts: 1,841




Post: #143
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
PioneerSpirit  Wrote: (05-19-2019 04:51 PM)
I visited there as a child, 50 years ago.
At that time, we were told that putting soap into geysers would make them go off.
And the park rangers said please do not put soap into geysers.
So naturally, being 7 years old, my brother and I tried to toss soap into the geysers.
We never got them in the holes.

Does soap set off geysers?
Or was that just something, 50 years ago, that was folk lore??
Folklore, I guess. All four of the hydrothermal events (geysers, hot springs, mudpots, and fumaroles) require the same thing to get them going.
  1. You need to have an underground source of heat. Typically, it would be rhyolite (a felsic rock sort of like granite without the crystal growth) which is usually heated by a magma chamber below it.
  2. A source of water. In the case of Yellowstone, it would be the high level of winter precipitation. (Ironically, the same moving hot-spot -- which is the heat engine for Yellowstone -- also created the Snake River plain in Idaho -- where I live -- which allows the moist Pacific atmosphere to roll up to the Yellowstone area where it precipitates out)
  3. Impervious levels of rock which keeps the water from sinking down too low and/or draining away. That way, you always have a replenished aquifer in the area.
  4. A plumbing system to allow the steam and gases to rise to the surface. This is primarily underground cracks and tubes in the rhyolite.
What usually happens with geysers is that the plumbing has a bottleneck (venturi) in the rock. When the water in the aquifer is heated to boiling and produces superheated steam, the pressure blows the steam out violently, and as soon as the steam reaches the surfaces, it cools a bit.

After a certain amount of time (depending on the blockage and the amount of heat and a bunch of other variables), the pressure is unloaded and the geyser dies away. Then the water collects in the plumbing where the heat source turns it into steam again. In some cases, where you have a constant supply of heat, a stable plumbing system, and enough water, the geyser will cycle on a regular basis. Old Faithful is such an example.

Lots of things can cause a hydrothermal event to change. For example, sinter (a silica-rich precipitate from rhyolite) or travertine (a calcium-rich precipitate from limestone) can clog up the plumbing, just like your pipes get clogged up if you live in a hard-water area. Sometimes, this shuts down the geyser for a while (days or even years) until the buildup of pressure unclogs the pipes or the water erupts from a different route and you have a new geyser or hot spring.

Sometimes an earthquake (a small local one or even a big one thousands of kilometers away) can block (or maybe unblock) the plumbing, and you have noticeable changes in the geyser or hot spring, etc.

But soap doesn't work. (However, if you can get a bottle of high-sudsing detergent and a couple bottles of concentrated dye and sneak down to a city fountain when no one's looking, it's almost as much fun as watching a geyser).

"I have never owned a firearm and I never will, because the Government is my friend, the Police will protect me, and, besides, Guns kill people."
(This post was last modified: 05-20-2019 03:08 PM by Old Whatshisname.) Quote this message in a reply
Old Whatshisname staff
retired aerospace bureaucrat
User ID: 501531
05-20-2019 03:26 PM

Posts: 1,841




Post: #144
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
UnAcceptance  Wrote: (05-20-2019 06:21 AM)
Duncan, were there places that were "off limits" that you could record from a distance?
And why was the reason that those places were "off limits"?

Well, there were parts of the Norris Basin that were off limits, but that was because they were replacing the boardwalks and building a bridge near one of the geysers. There were also several areas where a mud-pot or hot spring was a little more active than usual and there were signs warning people not to get too close, but I understand that's pretty common giving they dynamics of hydrothermal places like Yellowstone.

The other possible closures were the bear management areas, but I didn't hear about any of them (of course, I wasn't listening for them, either).

That's all I can think of. I know that our professor had checked out all the details of Yellowstone on a daily basis to make sure we could go to wherever we'd planned. We went in the West entrance, being from Idaho and all, The only issue was that one of the roads in Yellowstone was still blocked with snow.

"I have never owned a firearm and I never will, because the Government is my friend, the Police will protect me, and, besides, Guns kill people."
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Old Whatshisname staff
retired aerospace bureaucrat
User ID: 501531
05-20-2019 03:48 PM

Posts: 1,841




Post: #145
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
silversides  Wrote: (05-20-2019 06:15 AM)
Duncan have you ever heard of Death Gulch in Yellowstone National Park?

In the early days of Yellowstone it had deadly gas eruptions.
Since that time it has become dormant. Although it still gives off some gas.

Not until just now. It sounds pretty creepy. I'm going to ask Shawn about it when I see him later this week.

By the way, you need to check Shawn Willsey out. He is finishing the second edition of "Roadside Geology of Idaho", ans well as his "Geology Underfoot" book. I got both of them to learn about my new home just before we moved to Idaho. When I started classes at CSI, I found out about his course and jumped on it. The dude knows.

"I have never owned a firearm and I never will, because the Government is my friend, the Police will protect me, and, besides, Guns kill people."
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LoP Guest
lop guest
User ID: 439438
05-20-2019 05:46 PM

 




Post: #146
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
Cleatus  Wrote: (05-19-2019 05:15 PM)
LoP Guest  Wrote: (05-19-2019 02:49 PM)
It's cause you get mixed up with tomatoes. Naughty

In or out for tomatoes, specific please.

Tomatoes and potatoes are fine. Out, or in.
(No big disasters I anticipate, for a few decades)
((Except for the floods))
If your tomato is floating in more than 1 foot of water. Then, bring it in.
Potatoe? 1dunno1
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LunaC
¯\_(ツ)_/¯
User ID: 441651
05-21-2019 01:39 AM

Posts: 13,355




Post: #147
RE: Just got back from Geology research program in Yellowstone: Ask me a question.
silversides  Wrote: (05-20-2019 06:15 AM)
Duncan have you ever heard of Death Gulch in Yellowstone National Park?

In the early days of Yellowstone it had deadly gas eruptions.

Since that time it has become dormant. Although it still gives off some gas.

The Norris Geyser basin is another place that can kill with gas although it is very rare.

-------------------------------

Are Yellowstone's Gases Dangerous?
https://www.nationalparkstraveler.org/20...-dangerous

-------------------------------

Poison gas kills five bison in Yellowstone
https://www.bozemandailychronicle.com/ne...90d02.html

-------------------------------

DEATH GULCH, A NATURAL BEAR-TRAP.
By T. A. JAGGAR, Jr., Ph. D.
https://en.wikisource.org/wiki/Popular_S..._Bear-Trap

That was cool to read about

Fléctere Si Néqueo Súperos Acheronta Movebo
I never dreamed I'd grow up to be an asshole. But here I am. Killing it.
(This post was last modified: 05-21-2019 01:39 AM by LunaC.) Quote this message in a reply








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