Methane molecules that contain two or more rare isotopes
Methane clumped isotopes are methane molecules that contain two or more rare isotopes. Methane (CH4) contains two elements, carbon and hydrogen, each of which has two stable isotopes. For carbon, 98.9% are in the form of carbon-12 (12C) and 1.1% are carbon-13 (13C); while for hydrogen, 99.99% are in the form of protium (1H) and 0.01% are deuterium (2H or D). Carbon-13 (13C) and deuterium (2H or D) are rare isotopes in methane molecules. The abundance of the clumped isotopes provides information independent from the traditional carbon or hydrogen isotope composition of methane molecules.
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isotopes in methane molecules. The abundance of the clumpedisotopes provides information independent from the traditional carbon or hydrogen isotope...
Clumpedisotopes are heavy isotopes that are bonded to other heavy isotopes. The relative abundance of clumpedisotopes (and multiply-substituted isotopologues)...
fractionation. Studying the clumpedisotopes of methane provides a new dimension of mixing-constraints. The mixing line in the clumpedisotope notation space is...
the system in heavy isotopes of C and O. Since clumpedisotope abundance depends on abundance of isotopes of C and O, they are also modified. Another very...
substituted (or “clumped”) species than predicted by the statistical abundance of each heavy isotope (known as a stochastic distribution of isotopes). This effect...
Olaf G.; Ferreira, Alexandre A. (2017). "Methaneclumpedisotopes: Progress and potential for a new isotopic tracer". Organic Geochemistry. 113: 262–282...
different isotopes in a sample of methane, which can indicate the methane’s source. The instrument has enabled his group to discover the origins of methane from...
Italy. Oxygen isotope analysis showed a large negative change in the proportion of heavier oxygen isotopes to lighter oxygen isotopes, which indicates...
high as 61 °C, while the MATR of Asia was anywhere from 51 to 60 °C. Clumpedisotope measurements from the Green River Basin confirm a high seasonality...
Second, the Earth and Moon have the same oxygen isotopic signature (relative abundance of the oxygen isotopes). Of the theories proposed to account for these...
phenomenon called "dirty blizzard": oil caused deep ocean sediments to clumped together, falling to the ocean floor at ten times the normal rate in an...
Unlocking burial diagenetic processes in the Mancos Shale using carbonate clumpedisotopes". Earth and Planetary Science Letters. 394: 30–37. Bibcode:2014E&PSL...
ancient meteorites reveal traces of stable daughter nuclei of short-lived isotopes, such as iron-60, that form only in exploding, short-lived stars. This...
Flannery DT, et al. (2012). "Oxygen-Dependent Morphogenesis of Modern Clumped Photosynthetic Mats and Implications for the Archean Stromatolite Record"...
of vapourization (23.5 kJ/mol; for comparison, water's is 40.65 kJ/mol, methane 8.19 kJ/mol and phosphine 14.6 kJ/mol) and can be transported in pressurized...
isotopologues (versions containing different atomic isotopes), the spectrum is further complicated by isotope shifts. Detection of a new interstellar or circumstellar...
techniques for the detection of biosignatures, such as the use of stable isotopes, also played a significant role in the evolution of the field. The contemporary...
substances and radioactivity, including the use of radioactive isotopes to study non-radioactive isotopes and ordinary chemical reactions. radionuclide A radioactive...
Shigenori (2014-01-15). "Origin of methane in serpentinite-hosted hydrothermal systems: The CH4–H2–H2O hydrogen isotope systematics of the Hakuba Happo hot...
with CO2 to produce methane gas, a process that has been considered as a non-biological source for the trace amounts of methane reported in the Martian...
carbon while microorganisms in the soil produce methane and respire CO2. Lakes are net emitters of methane, and organic and inorganic carbon (dissolved and...
ancient meteorites reveal traces of stable daughter nuclei of short-lived isotopes, such as iron-60, that only form in exploding, short-lived stars. This...
the early Mesozoic. Jones, Petersen & Curley (2022) report carbonate clumpedisotope paleotemperatures of the mid-Cretaceous thermal maximum measured from...
Hagit P. Affek (2018). "Eocene greenhouse climate revealed by coupled clumpedisotope-Mg/Ca thermometry". Proceedings of the National Academy of Sciences...
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