Tim Some of my data in my Thesis might be useful, never published though. It only records changes in the OAE1a though. I still have the data somewhere if you want to have a look at it. Regards Bob Sent from my BlackBerry® wireless device -----Original Message----- From: "Heaton, Timothy HE" <[log in to unmask]> Date: Thu, 23 Aug 2007 11:51:59 To:[log in to unmask] Subject: [ISOGEOCHEM] Isotope changes in marine organic carbon Does anyone know of any recent reviews on carbon isotope changes of marine ORGANIC carbon through geological time? Especially studies that relate marine orgainc d13C to atmospheric CO2 changes. Tim H.E. Heaton NERC Isotope Geosciences Laboratory British Geological Survey Keyworth, Nottingham NG12 5GG, England ( <file://www.bgs.ac.uk/nigl/index.htm> www.bgs.ac.uk/nigl/index.htm) Tel. +44(0)115 936 3401 Email: [log in to unmask] *************************************************************************************************************** This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. ***************************************************************************************************************