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Stable Isotope Geochemistry

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from gamma.gns.cri.nz (gamma.gns.cri.nz [131.203.5.250]) by list.uvm.edu (AIX4.2/UCB 8.7/8.7) with SMTP id OAA12750 for <[log in to unmask]>; Sun, 3 Nov 1996 14:55:35 -0500 (EST) from wpo.gns.cri.nz (wpo.gns.cri.nz [131.203.5.247]) by gamma.gns.cri.nz (8.6.9/8.6.9) with SMTP id JAA12847 for <[log in to unmask]>; Mon, 4 Nov 1996 09:00:15 +1300
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"BLATTNER, PETER" <[log in to unmask]>
Date:
Mon, 4 Nov 1996 8:57:26 +1200
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Dear Jens,

yes, nice to feel like "anybody out there in the world"!

Craw et al (in CLAY MINERALS 30, 165-172, 1995) describe
aragonite grown some 5k years ago at 7 or 8 deg C in a debris
flow. The water was minus 9.5 permil del 18-O, the aragonite has
24.0 permil (3 samples, plus/minus 0.1). Calcite has 22.9 permil.
I don't have Mg data, but there is pyroaurite present (a hydrous
Mg carbonate), as well as chrysotile, which has 5.5 permil. 

Hope that helps. We did note a discrepancy with Tarutani's data,
which are supposed to be inorganic.

Peter

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