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re: Guide service posts FB pic of huge crack in the earth in Wyoming
Posted on 10/29/15 at 4:06 pm to Jim Rockford
Posted on 10/29/15 at 4:06 pm to Jim Rockford
How many cattle do you think walked right into that shite?
1
Posted on 10/29/15 at 4:06 pm to Bmath
You know what a dishonest geologist does to people who want to buy rocks?
He gypsum
He gypsum
Posted on 10/29/15 at 4:07 pm to fr33manator
Posted on 10/29/15 at 4:07 pm to Black n Gold
quote:
How many cattle do you think walked right into that shite?
Are there superheated gases coming up through the vent?
That would smell delicious
Posted on 10/29/15 at 4:09 pm to Jim Rockford
How old is that crack? Looks like it has been there for a while.
Posted on 10/29/15 at 4:10 pm to fr33manator
I overheard a diamond the other day complaining about all the pressure he's been under.
Posted on 10/29/15 at 4:11 pm to Black n Gold
Posted on 10/29/15 at 4:15 pm to Bmath
COME ON PEOPLE!!!!
It's called sarcasm....
It's called sarcasm....
Posted on 10/29/15 at 4:16 pm to Black n Gold
What did the fluvial geomorphologist say to the pelagic seismologist?
No one cares.
They will die alone.
No one cares.
They will die alone.
Posted on 10/29/15 at 4:16 pm to fr33manator
Posted on 10/29/15 at 4:18 pm to Jim Rockford
Yellowstone getting ready to blow. Can you imagine if that happens in our lifetime? Would suck but would also be kind of awesome.
Posted on 10/29/15 at 4:24 pm to BamaScoop
Posted on 10/29/15 at 4:24 pm to BamaScoop
Could you imagine if you were standing in one of those little 'islands' when the crack blew open? I'd shite bricks
Posted on 10/29/15 at 4:26 pm to BamaScoop
quote:
Yellowstone getting ready to blow. Can you imagine if that happens in our lifetime? Would suck but would also be kind of awesome.
It has erupted on average every 200,000 years... we are currently at 300,000 years since the last eruption.
Of the last 3 occurrences, two covered the midwest with ash and pyroclastic material. The big one covered as far south as Louisiana and most of Texas.
When it blows again, it will cover most of the US West of the Mississippi River in ash (inches for us, multiple feet the closer you get to the site)
Above is a map of the last 3 events and their coverage. That's Mt. St. Helens last eruption in the NW corner for reference.
This post was edited on 10/29/15 at 4:28 pm
Posted on 10/29/15 at 4:28 pm to Jim Rockford
That's how the grand canyon started.
Posted on 10/29/15 at 4:29 pm to Clyde Tipton
Roll Tide! 
Posted on 10/29/15 at 4:52 pm to TidenUP
quote:
Roll Tide!
Ash is not the only problem.
Since airplanes have been invented since the last eruption, it will cease all air travel for months, possibly years. Airplanes will not be able to navigate, and their engines would fail taking in all of the ash instead of pure air. The ash clouds will change the climate for years as it will limit the amount of sun that gets through. That will mess up crops... well that and the acid rain.
Closer to the eruption site, there will be massive landslides and lahars (mud and debris flow down streams and rivers).
What happened with Yellowstone, is that the magma chamber lost pressure or had a void space that allowed the earths crust to collapse on itself forming a caldera volcano.
But it's not extinct, only dormant. The gas pressure will, and has been, steadily increasing until it blows again.
Much like a coke can, once you open it and relieve pressure off it goes. The gaseous explosive eruptions are the ones that throw the ash and pyroclastic material and tend to be super violent like Mt. St. Helens. You don't want to be within miles of an eruption.
Whereas, places like Hawaii you can walk right up to a lava flow and be relatively safe.
The viscosity of the magma plays a major role in eruption style. Places like Hawaii it flows easy and doesn't build up as much pressure. Places like Yellowstone and the Cascade Mountains have a much thicker magma that stops up the vent, cools and begins holding in pressure from underneath until it reaches it's breaking point.
This post was edited on 10/29/15 at 4:54 pm
Posted on 10/29/15 at 4:56 pm to Jim Rockford
I'm totally using this in my class
Posted on 10/29/15 at 5:03 pm to Pectus
How many geologists are in this thread? Haha.
Posted on 10/29/15 at 5:06 pm to Clyde Tipton
quote:
The viscosity of the magma plays a major role in eruption style. Places like Hawaii it flows easy and doesn't build up as much pressure. Places like Yellowstone and the Cascade Mountains have a much thicker magma that stops up the vent, cools and begins holding in pressure from underneath until it reaches it's breaking point.
I like to think in 20,000 years we will be able to not only detect imminent eruptions with ease, but also artificially induce smaller pressure releasing events to curtail mass extinction event eruptions.
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