Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/10757
DC Field | Value | Language |
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dc.date.accessioned | 2018-02-16T14:05:00Z | en |
dc.date.available | 2018-02-16T14:05:00Z | en |
dc.date.issued | 2017 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10757 | en |
dc.description.abstract | The isotopic composition of methane is of longstanding geochemical interest, with important implications for understanding petroleum systems, atmospheric greenhouse gas concentrations, the global carbon cycle, and life in extreme environments. Recent analytical developments focusing on multiply substituted isotopologues (‘clumped isotopes’) are opening a valuable new window into methane geochemistry. When methane forms in internal isotopic equilibrium, clumped isotopes can provide a direct record of formation temperature, making this property particularly valuable for identifying different methane origins. However, it has also become clear that in certain settings methane clumped isotope measurements record kinetic rather than equilibrium isotope effects. Here we present a substantially expanded dataset of methane clumped isotope analyses, and provide a synthesis of the current interpretive framework for this parameter. In general, clumped isotope measurements indicate plausible formation temperatures for abiotic, thermogenic, and microbial methane in many geological environments, which is encouraging for the further development of this measurement as a geothermometer, and as a tracer for the source of natural gas reservoirs and emissions. We also highlight, however, instances where clumped isotope derived temperatures are higher than expected, and discuss possible factors that could distort equilibrium formation temperature signals. In microbial methane from freshwater ecosystems, in particular, clumped isotope values appear to be controlled by kinetic effects, and may ultimately be useful to study methanogen metabolism. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Organic Geochemistry | en |
dc.relation.ispartofseries | /113 (2017) | en |
dc.title | Methane clumped isotopes: Progress and potential for a new isotopic tracer | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.description.pagenumber | 262-282 | en |
dc.identifier.doi | 10.1016/j.orggeochem.2017.07.016 | en |
dc.description.obiettivoSpecifico | 6A. Geochimica per l'ambiente | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Douglas, Peter M.J. | en |
dc.contributor.author | Stolper, Daniel A. | en |
dc.contributor.author | Eiler, John M. | en |
dc.contributor.author | Sessions, Alex L. | en |
dc.contributor.author | Lawson, Michael | en |
dc.contributor.author | Shuai, Yanhua | en |
dc.contributor.author | Bishop, Andrew | en |
dc.contributor.author | Podlaha, Olaf G. | en |
dc.contributor.author | Ferreira, Alexandre A. | en |
dc.contributor.author | Santos Neto, Eugenio V. | en |
dc.contributor.author | Niemann, Martin | en |
dc.contributor.author | Steen, Arne S. | en |
dc.contributor.author | Huang, Ling | en |
dc.contributor.author | Chimiak, Laura | en |
dc.contributor.author | Valentine, David L. | en |
dc.contributor.author | Fiebig, Jens | en |
dc.contributor.author | Luhmann, Andrew J. | en |
dc.contributor.author | Seyfried, William E. | en |
dc.contributor.author | Etiope, Giuseppe | en |
dc.contributor.author | Schoell, Martin | en |
dc.contributor.author | Inskeep, William P. | en |
dc.contributor.author | Moran, James J. | en |
dc.contributor.author | Kitchen, Nami | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Goethe University, Frankfurt a.M., Germany | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.orcid | 0000-0001-5074-1462 | - |
crisitem.author.orcid | 0000-0001-8614-4221 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
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Douglas et al 2017 OG.pdf | 3.14 MB | Adobe PDF |
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