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Off-site Hadean Links, User Submitted

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Thu Jun 18

• New Glimpses of Life?s Puzzling Origins - NYTimes.com

Tue Dec 9

• Rock and Roil: Meteorites Hitting Early Earth's Oceans May Have Helped Spawn Life: Scientific American: but meteorites did almost everything

Wed Dec 3

• A New View of the Early Earth, Thanks to Australian Rocks - NYTimes.com: Drawing a pretty long bow to get to subduction zone, but really interesting stuff

Mon Dec 1

• A New View of the Early Earth, Thanks to Australian Rocks - NYTimes.com

Fri Nov 21

• dbedit01.gif (imagem GIF, 482x202 pixels)

Fri Oct 31

• Hell: Arguments For and Arguments Against Hell

Thu Sep 25

• Neodymium-142 Evidence for Hadean Mafic Crust -- O'Neil et al. 321 (5897): 1828 -- Science: subscription wall... wishing i hadn't dropped out :@
• Possible oldest-known rocks found: more detail. they used Nd-Sm. 4.28 Ga
• World's oldest rocks discovered in Canada - ABC News (Australian Broadcasting Corporation): How can journalists get away with crap like this! "isotope dating can only be used to date rocks older than 4.1 billion years". Makes me wonder how I am supposed to trust anything else from AFP or the ABC. [The statement is utterly wrong, age restrictions depend only on the half-life of the isotopes being used in whatever technique *of* isotope dating is being used. For example, radiocarbon dating can't be used for anything OLDER than a mere 40,000 years, because 14-C and 12-C have short half lives. Radiocarbon is as much a technique of "isotope dating" as any other; you use isotopes to date something! The technique used here (as usual, details are never mentioned) probably involves half lives on a scale of 10 or 15 billion years, and so is restricted to very old stuff (and therefore probably only been used successfully on lunar rocks before - which are mostly very old).]

Thu Nov 29

• Nothing Says "Early Earth Was Cool" Like World's Oldest Diamonds: Scientific American: Tiny diamonds discovered in antediluvian zircon crystals sprinkled in three-billion- year old rocks from Australia hint that the planet's surface fire might have ceased much earlier than previously believed.

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Off-site Hadean Research Links

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