[neverdem]

The Boyet and Carlson result requires the Earth to have differentiated early, within 30 million years, leaving most of Earth's mantle (light blue) depleted in those elements that prefer melts over crystallizing solids. The chemical complement to the depleted mantle could be small and quite enriched in radioactive elements, such as uranium and thorium; this complementary material may coincide with the seismically observed D" layer, located between the core and the mantle some 2700 km deep. (Images courtesy Maud Boyet)

[Fiddlstix]

BTTT

[Mamzelle]

You know, between 30M and 4B -- pretty soon you're talking about real time.

[beyond the sea]

Earth's future was determined at birth.

Lost on the first absurd sentence.

Birth? I.D............ B.B. .............. what?

[Thinkin' Gal]

The layering happened within 30 million years of the solar system's formation, instead of occurring gradually over more than 4 billion years, as the standard model suggests.

[RunningWolf]

I am very interested in these subjects. Thank you for the article.

Wolf

[aliquando]

I am truly thankful that G_d gave us the ability to figure this stuff out. I love science and do believe that what we learn is what G_d wants us to learn. Look at all that we have gleaned from human embryology over the past 30 years. I just love the way G_d makes things very clear for us when we are ready to see them. Look at quantum mechanics, anything that make complicated physics that neat and simple is truly a gift from above!

[LiteKeeper]

YEC INTREP

[dread78645]

Archive?

[Thinkin' Gal]

Using new-generation equipment, Boyet and Carlson found, surprisingly, that the terrestrial samples did not have the same ratio as the meteorites. Compared to chondrites, all terrestrial rocks measured have an excess of the mass 142 isotope of neodymium (142Nd), which is the decay product of a now-extinct radioactive isotope of samarium of mass 146 (146Sm) that was present at the birth of the solar system but decayed away shortly thereafter.

Main Entry: sa·mar·i·um
Pronunciation: s&-'mer-E-&m, -'mar-
Function: noun
Etymology: New Latin, from French samarskite
: a pale gray lustrous metallic element used especially in alloys that form permanent magnets -- see ELEMENT table

And now for something completely different:

Main Entry: sa·mar·i·um
Pronunciation: s&-'mer-E-&m, -'mar-
Function: noun
Etymology: New Latin, from French samarskite
: a pale gray lustrous metallic element used especially in alloys that form permanent magnets -- see ELEMENT table

###

28 October 1878: Delafontaine reports another new metal found in samarskite from North Carolina, this time he gave this element the name Decipium, after the Latin "decipiens", which means "deceptive, misleading" (note). According to Delafontaine, samarskite contains the earths yttria, erbia, terbia, philippia, decipia, thoria, didymia, and ceria.

16 August 1880: after spectroscopical analysis, Soret found that Decipium was identical with Lecoq's Samarium (note). Later was shown that Decipium was a mixture of Samarium and other rare-earth elements, mainly Neodymium and Praseodymium.

28 July 1879: François Lecoq de Boisbaudran (1838-1912) analyzed samarskite and noted that another earth precipitated before Didymia when ammonium hydroxide was added. Spectral analysis showed two new blue lines, differend from the lines of Decipium. Lecoq called the new earth Samaria after its mineral source. The name for the element within became Samarium. (note). To Vasilij Evgrafovic Samarskij-Byhovec, a rather unknown person, went the honour of being the first individual to give his name to a chemical element.

Despite the suggested chemical symbol of Sm, until the 1920s often Sa was used (note). Later was shown that Lecoq's Samarium was a mixture of Samarium and Europium. Eugène-Anatole Demarçay (1852-1904) separated it in 1901.

19 April 1880: Marignac reports that he has separated two new earths from samarskite. He indicated them provisionally with Ya and Yß (note).

16 August 1880: after spectroscopical analysis, Soret found that Yß was identical with Samarium (note). In 1886 Lecoq de Boisbaudran produced a more pure form of Ya and named it Gadolinium.

Via spectroscopical analysis Sir William Crookes described in 1886 an element Sd, which later proved to be Samarium.

http://www.vanderkrogt.net/elements/elem/sm.html

Basic information:

http://www.chemicalelements.com/elements/sm.html

The symbols one finds in the oddest places. Wonder how it's spelled in Hebrew...

http://www.vanderkrogt.net/elements/lang/hebrew_num(w1255).html

samech, mem, resh, yud, vav, mem
60 + 40 + 200 + 10 + 6 + 40 = 356

Compare:

alef, mem, resh, yud, quf, hei

1 + 40 + 200 + 10 + 100 + 5 = 356

[UnbelievingScumOnTheOtherSide]

The layering happened within 30 million years of the solar system's formation, instead of occurring gradually over more than 4 billion years, as the standard model suggests.

And then again, maybe it was only 6000 years? ;-)

[Havoc]

Tolkien built his mythology pretty much alone. Apparently, vast fictions are still possible, but people don't seem smart enough to create them on their own anymore. It takes vast numbers of people to write broad fictions nowdays. The more stupid the fiction, the more likely it will be called "science" apparently. If it's good fiction, it might make it to the best seller list and maybe even have the name of a single mind attached to it - like Stephen King... Now I'll shut up and let the liberals present take on the parlance of the anti-McCarthy mob. Perhaps once they're done being emotional and irrational, we can imagine why we should bother accepting assumptions as "reasonable" when there is no basis for analyzing how "reasonable" the assumptions are.
Next year, the earth will be nearly 5billion years old - assuming we accept assumptions. lol

[Senator Bedfellow]

Ladies and gents, the polls are now open in the cast-your-vote-for-the-silliest-argument contest. Which argument here is sillier?

A) The person railing about those darned "assumptions" without bothering to do anything so mundane as name any of those assumptions or explain why they are unwarranted, or;

B) the person who thinks this article means that the age of the earth is being revised downward to 30 million years - after all, if you're six feet tall, and it took you about 14 years to grow to your present height of six feet, you must be about 14 years old.

Cast your votes now!

[metmom]

read later placemarker

[SunkenCiv]

This topic is 18 months old.

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[SierraWasp]

"Earth's future was determined at birth."

Yes! By God, it was!!!