http://www.daeron.fr/wiki/ 2012-05-20T21:50:21-04:00 http://www.daeron.fr/wiki/ http://www.daeron.fr/wiki/lib/tpl/drupal-garland-blue/images/favicon.ico text/html 2010-04-30T06:43:54-04:00 http://www.daeron.fr/wiki/doku.php?id=about&rev=1272624234&do=diff Clumpy Wiki is a collaborative website dedicated to sharing information and ideas regarding “clumped isotopes”. A “wiki” is a website that allows easy creation, editing and browsing of interlinked web pages via a web browser, using a simplified markup language (that definition was stolen from Wikipedia, which is itself a rather large wiki). text/html 2011-09-15T10:04:50-04:00 http://www.daeron.fr/wiki/doku.php?id=community&rev=1316095490&do=diff Focused groups Hi everyone, I am happy to announce the creation of the iDeal group (Isotopologues in Diagenetic Environments And the Lithosphere). The iDeal group is a focused group with a broad range of interests: * To study and understand paleo-fluid flow and carbonate cementation from sea-floor to subsurface * To study hydrothermal systems and high-temperature carbonate phases * To assess the potential use of clumped isotope as a tool to reconstruct the thermal history of basins *… text/html 2010-04-27T02:39:03-04:00 http://www.daeron.fr/wiki/doku.php?id=contents&rev=1272350343&do=diff * Introduction: what are clumped isotopes? * Recipes: useful experimental protocols. * Data processing: reduction and correction of raw IRMS data; standardization issues. * Calibration: issues regarding experimental calibrations. * Observations: miscellaneous experimental results. * Papers: relevant papers and abstracts. * Community: mailing lists, directories of labs and/or people. text/html 2010-05-07T09:57:36-04:00 http://www.daeron.fr/wiki/doku.php?id=data_processing&rev=1273240656&do=diff CO2 data reduction (1) Compute the isotopologue composition of your reference gas ...using the following parameters: * δ13CRef: the nominal carbon isotope composition of your reference gas vs VPDB * δ18ORef: the nominal oxygen isotope composition of your reference gas vs VSMOW * λ = 0.5164, the terrestrial mass-dependent fractionation parameter between 17O and 18O [missing reference] * R13-VPDB = 0.0112372, the abundance ratio of 13C/12C for VPDB [missing reference] * R17-VSMOW = 0… text/html 2011-09-07T06:50:31-04:00 http://www.daeron.fr/wiki/doku.php?id=default_sidebar_left&rev=1315392631&do=diff * Introduction * Recipes * Instruments * Data processing * Observations * Papers * Community text/html 2010-05-07T10:04:10-04:00 http://www.daeron.fr/wiki/doku.php?id=instruments&rev=1273241050&do=diff Different technical solutions for purifying CO2 " GC capillary / packed gel column; helium flow / passive flow..." Automated reaction and purification of carbonate samples " Short overview of current designs?" text/html 2010-04-26T17:37:26-04:00 http://www.daeron.fr/wiki/doku.php?id=introduction&rev=1272317846&do=diff " Someone should write a short text defining clumped isotopes, maybe pointing to key papers. These papers might perhaps be uploaded to the “papers” section of the wiki?" text/html 2012-04-04T09:08:03-04:00 http://www.daeron.fr/wiki/doku.php?id=observations&rev=1333544883&do=diff " miscellaneous experimental result" text/html 2012-03-14T15:01:45-04:00 http://www.daeron.fr/wiki/doku.php?id=papers&rev=1331751705&do=diff Reviews * Eiler, J. M. (2011), Paleoclimate reconstruction using carbonate clumped isotope thermometry, Quaternary Sci. Rev., 30(25-26), 3575-3588. doi: 10.1016/j.quascirev.2011.09.001 * Eiler, J. M. (2007), “Clumped-isotope” geochemistry -- The study of naturally-occurring, multiply-substituted isotopologues, Earth Planet. Sci. Lett., 262, 309-327. doi: 10.1016/j.epsl.2007.08.020 * Quade, J., C. Garzione, and J. Eiler (2007), Paleoelevation reconstruction using pedogenic carbonates, Rev.… text/html 2010-05-03T21:22:34-04:00 http://www.daeron.fr/wiki/doku.php?id=recipes&rev=1272936154&do=diff " Instructions for various experimental protocols." Synthetic calcite precipitation (Not yet written) CO2 sample purification (Not yet written) CO2-water equilibration Recipe for obtaining equilibrium Δ47 by CO2-H2O isotope exchange: The way to obtain CO2 with equilibrium Δ47 value at low temperatures is through isotope exchange between CO2 and H2O at the desired temperature. This is commonly done in order to use CO2 δ18O as a measure for H2O δ18O. Clumped isotopes equilibrium is obtained … text/html 2010-04-30T07:14:18-04:00 http://www.daeron.fr/wiki/doku.php?id=top_navigation&rev=1272626058&do=diff * about * syntax