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Earth Science & Geology News
#1
Please place all general news on geology in this thread.
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#2
OK.... to get this rolling, this new story may be important;


More shale oil in LA and TX.
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#3
This should prove, once and for all, that the antiquated theory of "Fossil Fuel" is just that. Abiotic oil really answers everything quite neatly. It's all coming up from within the earth as hydrocarbons just keep moving outward.

After all, its just common sense science, right?
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#4
(Comment on this later)

It seems that the Chinese also find interesting deposits...this time biotic... probably biotoxic to boot)
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#5
(03-11-2013, 12:00 PM)mv Wrote: (Comment on this later)

It seems that the Chinese also find interesting deposits...this time biotic... probably biotoxic to boot)

What is left unstated is the real cause and impact of all these dead pig carcasses recovered in the river.

For instance:

1. if slightly over 3300 were recovered, just what were the number of carcasses that escaped capture? Most likely several times that number.

2. how many of those dead pigs were eaten by poor farmers, who cannot afford to lose even a dead animal?

3. how many dead pigs were buried instead of thrown into the river? Remember, it is a crime to throw dead animal into the river, and PRC enforces this law.

4. How many other species of farm animals are also dying, or in the process of acquiring the disease? Remember, Chinese farmers tend to sleep in the same building with their animals, which are lumped together.

This is potentially a Huge issue that PRC will do its best to keep hush-hush.
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#6
If you are looking for new veins of gold, perhaps you should just follow the earthquakes: Earthquakes Make Gold Veins in an Instant.
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#7
11 kilometers (6.835083115 miles) is a long way down to go digging for gold.
Jefferson: I place economy among the first and important virtues, and public debt as the greatest of dangers. To preserve our independence, we must not let our rulers load us with perpetual debt. We must make our choice between economy and liberty, or profusion and servitude. If we can prevent the government from wasting the labors of the people under the pretense of caring for them, they will be happy.
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#8
(03-20-2013, 04:01 PM)jt Wrote: 11 kilometers (6.835083115 miles) is a long way down to go digging for gold.

It is a long way. However, we are getting better all the time with boring underground. A couple of decades ago fracking was beyond our abilities.
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#9
(03-19-2013, 08:19 PM)John L Wrote: If you are looking for new veins of gold, perhaps you should just follow the earthquakes.

no natural earthquakes in NY..almost..

ok, you 2nd amendment zealots, where does one buy a small nuke?
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#10
Not a comet, not an asteroid, not a meteor -- volcanoes caused mass extinctions.
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#11
(03-22-2013, 12:20 PM)mv Wrote: Not a comet, not an asteroid, not a meteor -- volcanoes caused mass extinctions.

With the title, "Extinction that paved way for dinosaurs definitively linked to volcanism", of course its linked to volcanism. But these people are letting their ego get in the way, and can't get used to the almost certain fact that it was one or more Impactors that caused the Siberian Traps to go off.

But it was on top of a huge strike, or series of strikes, that caused the volcanic eruptions.

Science has pretty much pinpointed the main impact crater that led to the Permian Extinctions, and that impact crater is located in Antarctica. And if you look at the location, and trace around to almost the exact opposite side of the planet, you find the Siberian Traps.

A huge strike would set off a gigantic series shock waves, or ripples, that would radiate outward equally, and everything would come back together again on the opposite side of the planet, causing a tremendous shock wave, thus leading to all the volcanic activity. And even counting continental movement for 250 million years, the placement works.

Why won't these egoists admit that the shock of a major impact is almost certainly what caused this? This is not rocket science, and any doofus can easily see how it works.
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#12
I'm not convinced that it is possible for an impactor to cause volcanic activity for millions of years... much more logical is to assume a continuous internal process to be the cause.
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#13
(03-22-2013, 12:59 PM)mv Wrote: I'm not convinced that it is possible for an impactor to cause volcanic activity for millions of years... much more logical is to assume a continuous internal process to be the cause.

This planet has had volcanic activity since day one. But other than that, what does "volcanic activity for millions of years" really mean? Are you saying that there is evidence that that particular series of Siberian eruptions lasted millions of years, rather than much quicker?

And just what would cause a continuous internal process unless caused by some other outside force, or pressure?
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#14
We do seem to have evidence that the same region (like Siberia) generated repeated rounds of volcanic activity over a long period of time.

As for the cause: quite likely the same force that causes continental drift (which in turn may be related to long-term accumulation of pressures in the mantle). This at least passes the smell test for me which Impactors fail.
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#15
Sorry, but I don't buy it.

Lets say there really is an Oort Cloud as Ron seems to question. And let's say that there really is some outside influence, such as an as yet discovered red dwarf, or gravitations pull of the galactic plane, which causes a shake-up in the imaginary Oort Cloud. This shake-up could take up an awful lot of time, in which countless comets could fall into the system's gravity well. And to make things more complicated, the comets forced into the gravity well, would keep coming back around again, and again, and.............

And eventually, over time, a number of them would Impact this planet, causing tremendous damage. Mass extinctions tend to run in twenty-7, to thirty-one, million year cycles, with two being of particular bad effect. The Permian and K/T extinctions are those two. And the timing of thirty plus million year cycles almost certainly point to some celestial involvement. What isn't equal is the intensity of each mass extinction. This most likely means that some of those cycles have more, or less, number of comets impacting the planet, over a period of thousands, or hundreds of thousands, of years.

Dr. Keller has stated that there is good evidence of more than one comet being the cause of the K/T extinctions, and I think she is right on that. It takes more than just one punch to produce a knockout blow. And that is what I believe occurred with the Permian extinctions too.

But my question to you is this: if you don't think the extinctions were caused by impactors, just what inside forces would cause all this mass eruptions over time, and enough to cause mass extinctions that didn't occur before? Plate tectonics would not be enough to do this. It would have to be something significant.


The dinosaurs might have been killed off by more than one asteroid

Here's another article on the K/T extinctions: Massive volcanoes, meteorite impacts delivered one-two death punch to dinosaurs. Note the concept that impacts and volcanism tend to work in concert with each other. To my thinking this makes the most logical sense. And its the simplest explanation as well.
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#16
(03-22-2013, 01:52 PM)John L Wrote: But my question to you is this: if you don't think the extinctions were caused by impactors, just what inside forces would cause all this mass eruptions over time, and enough to cause mass extinctions that didn't occur before? Plate tectonics would not be enough to do this. It would have to be something significant.

Plate tectonics. S6

Significant enough to build huge mountain chains over million of years. Easy to imagine that the same force would cause massive raptures in other circumstances.

And it may be significant that mountain chains seem to be built where tectonic plates touch... whereas both supervolcano areas are located inside continental plates. One factor is likely the depth of mantle in pressure areas, there may be many more.

One day someone, after years of work, will build a model.
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#17
(03-22-2013, 02:00 PM)mv Wrote:
(03-22-2013, 01:52 PM)John L Wrote: But my question to you is this: if you don't think the extinctions were caused by impactors, just what inside forces would cause all this mass eruptions over time, and enough to cause mass extinctions that didn't occur before? Plate tectonics would not be enough to do this. It would have to be something significant.

Plate tectonics. S6

Significant enough to build huge mountain chains over million of years. Easy to imagine that the same force would cause massive raptures in other circumstances.

And it may be significant that mountain chains seem to be built where tectonic plates touch... whereas both supervolcano areas are located inside continental plates. One factor is likely the depth of mantle in pressure areas, there may be many more.

One day someone, after years of work, will build a model.

Quote:The dinosaurs might have been killed off by more than one asteroid
Well, perhaps each dinosaur was killed by an individual asteroid. S6
(Just kiddin')
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#18
(03-22-2013, 02:00 PM)mv Wrote:
(03-22-2013, 01:52 PM)John L Wrote: But my question to you is this: if you don't think the extinctions were caused by impactors, just what inside forces would cause all this mass eruptions over time, and enough to cause mass extinctions that didn't occur before? Plate tectonics would not be enough to do this. It would have to be something significant.

Plate tectonics. S6

Significant enough to build huge mountain chains over million of years. Easy to imagine that the same force would cause massive raptures in other circumstances.

And it may be significant that mountain chains seem to be built where tectonic plates touch... whereas both supervolcano areas are located inside continental plates. One factor is likely the depth of mantle in pressure areas, there may be many more.

One day someone, after years of work, will build a model.

Not enough force available, unless all plates all over the world were locked up for several million years and suddenly released, all at once.

Mountain creation is a slow process where two or more plates collide and are forced up, rarely the result of any volcanism.

But what do I know anyway. I'll stick with my theory of Impactors being the initial cause of these events. The timing of mass extinction events coinciding along certain equally space time spans points to something other than plate tectonics. S22
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#19
Well, this is interesting: Death Star Off the Hook for Mass Extinctions. All this is causing me to go back and root around the internet, looking for interesting articles. And this is one.

Quote:Two independent groups of astronomers suggested that a dim brown dwarf or red dwarf star lying between one and two light-years from the sun could throw a shower of ice and rock from the Oort Cloud every 26 million or 27 million years to wreak havoc on Earth. Because the orbit of this “death star” would be tweaked by interactions with other stars and the Milky Way, the time between one impact and the next should vary by 15 to 30 percent.

But now, Melott and co-author Richard Bambach of the National Museum of Natural History in Washington, D.C., say that’s not actually what happens. The extinctions come almost exactly every 27 million years, they say, to a confidence interval of 99 percent.

“It’s really too good, it’s too sharp and fixed,” Melott said. “It’s like a clock.”

Here's a chart showing mass extinction events.

[Image: extinctions.jpg]
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#20
Quote:Mountain creation is a slow process where two or more plates collide and are forced up, rarely the result of any volcanism.

Slow buildup of pressure (possibly due to two colliding plates) may cause a fissure in an area of magma close to the surface. Feasible enough for me. (cf.: you slowly bend a rod... it bends, bends, bends, then snaps!)

Now, the extinction cycle seems real. But: firstly, there is another theory, about the gravitation pull due to crossing the galactic plane. At this time, it is hard to see which one is more probably. And secondly, a gravitational disturbance may indeed affect comets et al, but it also may affect Earth' internals.
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