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Hey Tim, I don't know if you have already been suggested but there is also this work by Pagani et al., Science, 22 July 2005, 309, 600-603, where a drop in paleoatmospheric concentration of CO2 during Paleogene was estimated by using d13C of C37:2 alkenone (together with d18O of coeval carbonates and [PO43-] throughout the top 100 m of ocean water). Cheers, Paolo Angelo Abballe PhD candidate School of Earth and Environmental Sciences University of Wollongong Wollongong NSW 2522 Australia Room 41.154: 02 4221 3426 Cell: 0408228147 ---- Original message ---- >Date: Thu, 23 Aug 2007 11:51:59 +0100 >From: "Heaton, Timothy HE" <[log in to unmask]> >Subject: [ISOGEOCHEM] Isotope changes in marine organic carbon >To: [log in to unmask] > > 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 > (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. > > *************************************************************************************************************** > >