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Member (Idle past 1593 days) Posts: 1174 From: Eugene, Oregon, USA Joined: |
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Author | Topic: Origin of Asteroids | ||||||||||||||||||||||||||||||||||
coffee_addict Member Posts: 3637 From: Chicago Joined: |
I don't know, but my past experiences tell me that even the hardest hard-core creos usually try to hide their crackpot ideas from the world and only express them to their fellow creos. They usually try to emphasize the less obvious crackpot ideas and only say the really obvious crackpot stuff in whisper.
I don't know. It just seems too crackpot to be the real thing.
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MangyTiger Member (Idle past 5182 days) Posts: 989 From: Leicester, UK Joined: |
This asteroid crap is part of the theories Dr. Walt Brown who is probably most famous (i.e. laughed at) here at EvC for his Hydroplate Theory.
There have been several threads devoted to his ideas in the 18 months I've been here. Actually now I come to think of it I can't believe you don't know that Lam - are you playing some sort of Devil's Advocate? On the other hand maybe you don't read the Geology & The Flud Forum. I wish I didn't know now what I didn't know then
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coffee_addict Member Posts: 3637 From: Chicago Joined: |
I'm not playing around. I just find it odd that creos actually loudly promote something like this. They usually try to appear less idiotic.
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Matt P Member (Idle past 3604 days) Posts: 106 From: Tampa FL Joined: |
There's not too much introductory data online, because it's not really something too interesting to people who don't study meteorites. Essentially it goes something like this- troilite (FeS)forms via the gas-solid reaction of iron and hydrogen sulfide:
Fe + H2S --> FeS + H2 The thermodynamics of this equation are such that the reaction occurs at ~750 K (500 C). The reverse reaction (loss of sulfur gas) occurs a bit higher, around 900 K, due to some other thermodynamic factors, mainly eutectic melting. Analogous arguments can be made for clays and magnetite. All of the reaction temperatures are much lower than Brown's quartz melting. There are a lot of other problems with Brown's asteroid nonsense, and I'd think the site was a spoof too if the guy wasn't so serious. Here's a Science article by Brearley that provides a quick bit of info:
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doctrbill Member (Idle past 1593 days) Posts: 1174 From: Eugene, Oregon, USA Joined: |
It is very much like something I was taught in Bible College, only more highly developed and to a different end.
What I was taught (re: an underground body of water) was in an attempt to explain how the earth could be uniformly warm. To wit: the water circulated from equator to poles and back. I recall wanting to see evidence of this circulatory system but then, it was presented as a speculation not as a scientific hypothesis. That makes it considerably different from what this fellow is trying to do. Theology is the science of Dominion. - - - My God is your god's Boss - - -
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doctrbill Member (Idle past 1593 days) Posts: 1174 From: Eugene, Oregon, USA Joined: |
That link requires membership but thanks for trying.
Theology is the science of Dominion. - - - My God is your god's Boss - - -
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Coragyps Member Posts: 5550 From: Snyder, Texas, USA Joined: |
Not membership, just free registration: everything from '96 to a year before today is open access. http://www.pnas.org/ is even a better deal - they're free from 1915.
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doctrbill Member (Idle past 1593 days) Posts: 1174 From: Eugene, Oregon, USA Joined: |
Thank you for that.
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Minnemooseus Member Posts: 3839 From: Duluth, Minnesota, U.S. (West end of Lake Superior) Joined:
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That 1730 Celsius number was for a high pressure crystal form of SiO2 (Beta-Cristobalite). My guess is that temperature was such at much higher than atmospheric pressure. The previous mention of 1600 Celsius may well be correct for SiO2 at atmospheric pressure. I tried and failed to find a good online silica temperature/presure phase diagram. If one wishes to venture into some highly technical material, you can look at http://arxiv.org/PS_cache/cond-mat/pdf/0406/0406192.pdf. One also may find some amusement in consulting this Scirus.com search, for "silica phase diagram". That is where I came up with the previous link. Moose
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Omnivorous Member (Idle past 438 days) Posts: 3811 From: Adirondackia Joined: |
Hi, Doc. Just ran across this message, and it prompted recollection of a recent report that the ocean current that drives the warming Gulf Stream flow to Britain has decreased by 30% in 12 years.
By the way, no, I don't think the web site is a spoof. That extremity is one possible fate for the True Believer.
Just so, but underwater instead:
Alas for dreams of fine British vintages! The warm years may be passing...
I guess my point is that folks will engage in fantastical theorizing in a field they remain willfully ignorant of, but then refuse to accept the authentic cautionary tale that ocean science and climatology can tell them. The evidence-based notion that planetary-scale human impacts on the earth will have planetary-scale consequences? Bad science, driven by Godless, politically motivated environmental radicals. The evidence-free notion that planetary-scale cataclysms could leave no planetary-scale signs? Yeah, that's it, that's the ticket... Save lives! Click here! Join the World Community Grid with Team EvC! --------------------------------------- What I refuse to accept is your insistence that your beliefs about your beliefs constitute evidence in support of your beliefs.
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RAZD Member (Idle past 234 days) Posts: 20714 From: the other end of the sidewalk Joined: |
side topic rising 2 points off the stbd bow .... thar she blows!!!
this slowing down would also mean that more temperature is lost from the current while along the east coast, warming us more, and that more warm temperature water is backed up in the hurricane belt? might need a new topic. we are limited in our ability to understand by our ability to understand RebelAAmerican.Zen[Deist
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Omnivorous Member (Idle past 438 days) Posts: 3811 From: Adirondackia Joined: |
It would make a good topic, RAZD, but I'm clawing my way out of both a parainfluenza and culture shock from a week in Texas--maybe later.
Like the affect of warming on hurricane intensity, the magnitude of the Gulf Stream changes is greater than most models predicted. While I don't push environmental doomsday scenarios, there are recent indications that our wake-up calls will come faster and louder than expected. On good days, I want to try harder to resist the globe-despoiling political alliance of Profits-and-Prophets; on bad days, I want the earth to scrub itself clean of us and start over. Today is a medium bad day. To paraphrase Nirvana, we're so stupid, and contagious.
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Coragyps Member Posts: 5550 From: Snyder, Texas, USA Joined: |
Back to the OP, it just occurred to me: the Main Belt asteroids all orbit direct - in the same direction as the Earth. In Walt's scenario, they were "launched" by a huge explosion along the earth-girdling mid-oceanic ridge. How did they all end up in similar orbits with differences of at least 50,000 miles per hour of orbital velocity at launch? The ones that took off at 6 AM local time would be going at earth's orbital velocity plus escape velocity (25,000 mph), while the ones leaving the opposite side of the earth at the same time would be going orbital minus escape.
'Course, this is mighty like worrying about how many invisible pink unicorns can stage their own Kentucky Derby around the edge of a pore on the butt of a manticore.....
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doctrbill Member (Idle past 1593 days) Posts: 1174 From: Eugene, Oregon, USA Joined: |
Hello Omnivorous one,
I agree. We have seen this brand of misguided sincerity many times before in this forum. You introduce an interesting topic. Saw something on television recently which addressed the relationship between ocean temperature and hurricane strength. I don't know if the info is debatable but if it is, I would like to see a discussion of it. Theology is the science of Dominion. - - - My God is your god's Boss - - -
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doctrbill Member (Idle past 1593 days) Posts: 1174 From: Eugene, Oregon, USA Joined: |
What a wonderfully poignant insight. I had not even considered the question of orbital mechanics.
Correct me if I am wrong but couldn't he counter this argument by suggesting that those rocks which didn't meet the velocity requirements simply fell back to earth or became otherwise lost in space? Theology is the science of Dominion. - - - My God is your god's Boss - - -
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