Abstract Details
(2020) An Experimental and Theoretical Calibration of CH4-H2-H2O Hydrogen Isotopic Equilibrium from 3-200℃
Stolper D, Turner A, Eldridge D, Bill M, Conrad M, Korol R & Miller T
https://doi.org/10.46427/gold2020.2468
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06l: Room 2, Thursday 25th June 00:51 - 00:54
Daniel Stolper
View all 2 abstracts at Goldschmidt2020
View abstracts at 10 conferences in series
Andrew Turner View abstracts at 2 conferences in series
Daniel Eldridge View abstracts at 6 conferences in series
Markus Bill View all 3 abstracts at Goldschmidt2020 View abstracts at 13 conferences in series
Mark Conrad View all 3 abstracts at Goldschmidt2020 View abstracts at 3 conferences in series
Roman Korol
Thomas Miller
Andrew Turner View abstracts at 2 conferences in series
Daniel Eldridge View abstracts at 6 conferences in series
Markus Bill View all 3 abstracts at Goldschmidt2020 View abstracts at 13 conferences in series
Mark Conrad View all 3 abstracts at Goldschmidt2020 View abstracts at 3 conferences in series
Roman Korol
Thomas Miller
Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.
Submitted by Riikka Kietäväinen on Thursday 18th June 10:11
Very nice study. Can you comment on abiotic methane as well?
Very nice study. Can you comment on abiotic methane as well?
Submitted by Daniel Gregory on Thursday 18th June 20:53
Thank you for the great presentation Daniel. Can you provide some statistics for the "real sample" data points and how close they are to the equilibrium line? It's difficult to see visually how close the biogenic coal and the coal/shale data is to the equilibrium line.
Thank you for the great presentation Daniel. Can you provide some statistics for the "real sample" data points and how close they are to the equilibrium line? It's difficult to see visually how close the biogenic coal and the coal/shale data is to the equilibrium line.
Submitted by Daniel Gregory on Thursday 18th June 20:54
Thank you for the great presentation Daniel. Can you provide some statistics for the "real sample" data points and how close they are to the equilibrium line? It's difficult to see visually how close the biogenic coal and the coal/shale data is to the equilibrium line.
Thank you for the great presentation Daniel. Can you provide some statistics for the "real sample" data points and how close they are to the equilibrium line? It's difficult to see visually how close the biogenic coal and the coal/shale data is to the equilibrium line.
Submitted by Josué Jautzy on Tuesday 23rd June 19:00
Thanks Daniel. Great talk! If I did not miss anything this would be applicable to hydrogenotrophic metabolisms. Within this enzymatic reversibility interpretative framework, what would we expect from methylotrophic metabolism that would draw H from two different pools?
Thanks Daniel. Great talk! If I did not miss anything this would be applicable to hydrogenotrophic metabolisms. Within this enzymatic reversibility interpretative framework, what would we expect from methylotrophic metabolism that would draw H from two different pools?
Submitted by Jennifer McIntosh on Wednesday 24th June 22:01
Congratulations on your well-deserved medal! Interesting experiments that confirm our findings from a global review of C-H isotopes of coalbed methane and shale gas systems (Vinson et al., 2017 in Chemical Geology) where we conclude H isotope exchange, rather than methanogenic pathway is responsible for dD variability of microbial CH4. My question: how does your model of d13C fractionation factors between CO2 and CH4 compare to in-situ field temperatures, and does it account for non-methanogenic carbon cycling? We find that non-methanogenic processes, such as bacterial sulfate reduction contribute CO2 with a different d13C value, shifting the alpha fractionation factor for CO2-CH4, which seems to be a more important control than temperature alone.
Congratulations on your well-deserved medal! Interesting experiments that confirm our findings from a global review of C-H isotopes of coalbed methane and shale gas systems (Vinson et al., 2017 in Chemical Geology) where we conclude H isotope exchange, rather than methanogenic pathway is responsible for dD variability of microbial CH4. My question: how does your model of d13C fractionation factors between CO2 and CH4 compare to in-situ field temperatures, and does it account for non-methanogenic carbon cycling? We find that non-methanogenic processes, such as bacterial sulfate reduction contribute CO2 with a different d13C value, shifting the alpha fractionation factor for CO2-CH4, which seems to be a more important control than temperature alone.
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