Comments on: Found: Primordial Magma From the Hot Dawn of the Earth http://blogs.discovermagazine.com/80beats/2010/08/12/found-primordial-magma-from-the-hot-dawn-of-the-earth/ 80beats is DISCOVER's news aggregator, weaving together the choicest tidbits from the best articles covering the day's most compelling topics. Tue, 22 May 2012 14:07:43 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Eliza Strickland http://blogs.discovermagazine.com/80beats/2010/08/12/found-primordial-magma-from-the-hot-dawn-of-the-earth/comment-page-1/#comment-244964 Eliza Strickland Mon, 16 Aug 2010 14:39:19 +0000 http://blogs.discovermagazine.com/80beats/?p=18853#comment-244964 @ Brian Too: They're saying that the magma that's still deep in the earth is ancient & unchanged. About 60 million years ago, it erupted and tossed some lava rocks onto the surface -- those rocks are what the scientists studied. And while those lava rocks are only 60 million years old, their composition bears the signature of the ancient stuff that formed them. Cheers, Eliza, DISCOVER online news editor @ Brian Too:

They’re saying that the magma that’s still deep in the earth is ancient & unchanged. About 60 million years ago, it erupted and tossed some lava rocks onto the surface — those rocks are what the scientists studied. And while those lava rocks are only 60 million years old, their composition bears the signature of the ancient stuff that formed them.

Cheers,
Eliza, DISCOVER online news editor

]]> By: Matt http://blogs.discovermagazine.com/80beats/2010/08/12/found-primordial-magma-from-the-hot-dawn-of-the-earth/comment-page-1/#comment-244085 Matt Sun, 15 Aug 2010 14:30:12 +0000 http://blogs.discovermagazine.com/80beats/?p=18853#comment-244085 So can they determine the hydrogen isotope ratios of the primordial magma? If they can determine helium ratios, this seems a possibility. If so, this could be a clue to where primordial water came from and, if current ratios are significantly different, where water accumulated since then came from (e.g. comets, icy asteroids from the late heavy bombardment, etc.) So can they determine the hydrogen isotope ratios of the primordial magma? If they can determine helium ratios, this seems a possibility. If so, this could be a clue to where primordial water came from and, if current ratios are significantly different, where water accumulated since then came from (e.g. comets, icy asteroids from the late heavy bombardment, etc.)

]]> By: Brian Too http://blogs.discovermagazine.com/80beats/2010/08/12/found-primordial-magma-from-the-hot-dawn-of-the-earth/comment-page-1/#comment-242332 Brian Too Fri, 13 Aug 2010 23:51:39 +0000 http://blogs.discovermagazine.com/80beats/?p=18853#comment-242332 Not quite sure I got this. Are they saying the magma was ancient, but erupted and solified 60 MYA? Not quite sure I got this. Are they saying the magma was ancient, but erupted and solified 60 MYA?

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