Bibliografie tematiche / Carbon isotope composition

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Letteratura scientifica selezionata sul tema "Carbon isotope composition"

Autore: Grafiati
Pubblicato: 8 giugno 2024
Ultima modifica: 26 luglio 2025

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Articoli di riviste sul tema "Carbon isotope composition"

1

Swart, Peter K., and Jim J. Leder. "The utility of stable isotopic signatures in coral skeletons." Paleontological Society Papers 1 (October 1996): 249–91. http://dx.doi.org/10.1017/s1089332600000127.

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There is a fundamental ecologic differentiation between zooxanthellate and non-zooxanthellate corals. This paper reviews factors which govern the stable carbon and oxygen isotopic composition of these groups of corals. Although the stable carbon and oxygen isotope compositions of coral skeletons are strongly influenced by environmental and physiological factors, the precise mechanisms remain a matter of debate. In particular the oxygen isotopic composition is known to be governed by the temperature and the oxygen isotopic composition of the water and perhaps also by kinetic factors. In contras
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2

Sare, David T. J., John S. Millar, and Frederick J. Longstaffe. "Tracing dietary protein in red-backed voles (Clethrionomys gapperi) using stable isotopes of nitrogen and carbon." Canadian Journal of Zoology 83, no. 5 (2005): 717–25. http://dx.doi.org/10.1139/z05-064.

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Abstract (sommario):
We examined the stable isotopes of nitrogen and carbon in a small mammal, the red-backed vole (Clethroinomys gapperi (Vigors, 1830)), to determine if isotope signatures reflect diet composition. Nitrogen- and carbon-isotope ratios in tissues from voles maintained on different protein levels in the laboratory were compared with wild-trapped voles. The isotopic fractionation of dietary nitrogen and carbon was also examined as food was digested in the stomach, incorporated into bone collagen, bioapatite, and hair, and excreted as feces. Nitrogen and carbon isotopes were fractionated differently d
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3

Friedman, Gerald M., and Chandan Chakraborty. "Stable Isotopes in Marine Carbonates: Their Implications for the Paleoenvironment with Special Reference to the Proterozoic Vindbyan Carbonates (Central India)." Journal Geological Society of India 50, no. 2 (1997): 131–59. http://dx.doi.org/10.17491/jgsi/1997/500203.

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Abstract The carbon and oxygen isotopic compositions of the minerals of carbonate rocks depend on the composition of the precipitating water and the temperature of precipitation. The carbon isotopes suffer little fractionation during precipitation of carbonate minerals and their carbon isotopic composition reflects that of the precipitating water. On the other hand, carbonate minerals become enriched in 18O with respect to the precipitating water and the degree of enrichment depends on the temperature of precipitation - lower the temperature, higher the enrichment. Isotopic studies of marine c
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4

Gruzdev, D. A., A. V. Zhuravlev, Ya A. Vevel, A. V. Erofeevsky, and I. V. Smoleva. "Famennian negative carbon isotope excursion in the Izyayu River section (Tchernyshev Uplift, Cis-Uralian Foredeep)." LITHOSPHERE (Russia) 23, no. 2 (2023): 165–78. http://dx.doi.org/10.24930/1681-9004-2023-23-2-165-178.

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Research subject. The article is focused on manifestations of the Early-Middle Famennian negative excursion in carbon isotope composition in the Izyayu River section (south of the Tchernyshev Uplift). Aim. The study is aimed to reconstructing of the probable causes of this isotope excursion. Materials and methods. The article is based on the results of study of the deep-shelf lower-middle Famennian sequence of the Izyayu River section. The carbon isotopic composition was studied for the carbonate samples and conodont elements (32 and 9 samples respectively). Results. The lightening of the carb
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Zhuravlev, A. V., and I. V. Smoleva. "Preliminary results of studying the carbon isotope composition of conodont elements at the border of Devonian and Carboniferous periods (Kamenka river sections, Pechora carbonate platform)." LITHOSPHERE (Russia) 20, no. 6 (2020): 829–41. http://dx.doi.org/10.24930/1681-9004-2020-20-6-829-841.

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Research subject. Changes in the trophic structure of shallow-water pelagic ecosystems at the Devonian/Carboniferous border were investigated by studying the carbon isotope composition of conodont organic matter.Materials and methods. Two Devonian-Carboniferous shallow-water clayey-carbonate sections located in the southern part of the Pechora-Kozhva Uplift (Pechora Plate) were analysed. The Devonian-Carboniferous boundary was detected by the first occurrences of Siphonodella sulcata, S. semichatovae and Patrognathus crassus, as well as by the last occurrence of Pseudopolygnathus graulichi. Th
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Passey, Benjamin H. "Reconstructing Terrestrial Environments Using Stable Isotopes in Fossil Teeth and Paleosol Carbonates." Paleontological Society Papers 18 (November 2012): 167–94. http://dx.doi.org/10.1017/s1089332600002606.

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Carbon isotopes in Neogene-age fossil teeth and paleosol carbonates are commonly interpreted in the context of past distributions of C3 and C4 vegetation. These two plant types have very different distributions in relation to climate and ecology, and provide a robust basis for reconstructing terrestrial paleoclimates and paleoenvironments during the Neogene. Carbon isotopes in pre-Neogene fossil teeth are usually interpreted in the context of changes in the δ13C value of atmospheric CO2, and variable climate-dependent carbon-isotope discrimination in C3 plants. Carbon isotopes in pre-Neogene s
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Irei, Satoshi. "Isotopic Characterization of Gaseous Mercury and Particulate Water-Soluble Organic Carbon Emitted from Open Grass Field Burning in Aso, Japan." Applied Sciences 12, no. 1 (2021): 109. http://dx.doi.org/10.3390/app12010109.

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Biomass burning is one of the major emitters of airborne particulate matter (PM) and gaseous mercury. In order to apply the isotopic fingerprinting method to process identification and source apportionment studies, isotopic characterizations of targeted substances at emission are indispensable. Here, we report the stable isotopic composition of total gaseous mercury (TGM) and the stable and radiocarbon isotopic composition of low-volatile water-soluble nitrogen (LV-WSN) and organic carbon (LV-WSOC) in PM emitted from open grass field burning in the Aso region of Japan. The measurement results
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Evans, JR, TD Sharkey, JA Berry, and GD Farquhar. "Carbon Isotope Discrimination measured Concurrently with Gas Exchange to Investigate CO2 Diffusion in Leaves of Higher Plants." Functional Plant Biology 13, no. 2 (1986): 281. http://dx.doi.org/10.1071/pp9860281.

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Conventional gas-exchange techniques that measure the stomatal conductance and rate of CO2 assimilation of leaves were combined with measurements of the carbon isotope composition of CO2 in air passing over a leaf. Isotopic discrimination during uptake was determined from the difference in the carbon isotope composition of air entering and leaving the leaf chamber. Isotopic discrimination measured over the short term correlated strongly with that determined from combusted leaf material. Environmental conditions were manipulated to alter the relative influences of stomatal conductance and carbo
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Kennedy, Brenda V., and H. Roy Krouse. "Isotope fractionation by plants and animals: implications for nutrition research." Canadian Journal of Physiology and Pharmacology 68, no. 7 (1990): 960–72. http://dx.doi.org/10.1139/y90-146.

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Abstract (sommario):
The isotopic compositions of animal tissues, minerals, and fluids reflect those of ingested food and water and inhaled gases. This relationship is illustrated by a review of data pertaining to five light elements of biological interest (carbon, nitrogen, hydrogen, oxygen, and sulphur). Processes affecting the isotopic composition of inorganic compounds in reservoirs are summarized, and isotope fractionation during transfer of elements from these inorganic reservoirs through progressive trophic levels of food webs is discussed. Variability of δ values within and among individuals, populations,
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Smith, J. J., J. S. Millar, F. J. Longstaffe, and R. Boonstra. "The effect of metabolic rate on stable carbon and nitrogen isotope compositions in deer mice, Peromyscus maniculatus." Canadian Journal of Zoology 88, no. 1 (2010): 36–42. http://dx.doi.org/10.1139/z09-116.

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Abstract (sommario):
The stable isotopic compositions of nitrogen and carbon in animal tissues reflect diet. However, factors other than diet can also affect these stable isotope ratios, leading to misinterpretations of diet composition. To test the hypothesis that variation in metabolic rate alters the isotopic compositions of tissues, deer mice ( Peromyscus maniculatus (Wagner, 1845)) were kept at three temperatures (thermoneutral (23 °C), cool (5 °C), and cold (–10 °C)) and fed ad libitum. The changes in carbon and nitrogen isotope compositions of liver associated with the thermoneutral versus cool and cold con
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Tesi sul tema "Carbon isotope composition"

1

Barral, Cuesta Abel. "The carbon isotope composition of the fossil conifer Frenelopsis as a proxy for reconstructing Cretaceous atmospheric CO2." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1148.

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Abstract (sommario):
Le Crétacé a été une période d'instabilité climatique et du cycle du carbone, dont le CO2 atmosphérique a été désigné comme le driver majeur. Cependant, les reconstitutions du CO2 atmosphérique ne reflètent ni les dynamiques climatiques ni les grands évènements de perturbation du cycle du carbone décrits pour cette période. J'ai utilisé la composition isotopique de carbone de la plante fossile Frenelopsis (d13Cleaf) comme un nouvel proxy pour reconstituer le CO2 atmosphérique du Crétacé en termes de composition isotopique de carbone (d13CCO2) et de concentration (pCO2). La première courbe de d
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Gromov, Sergey S. [Verfasser]. "Stable isotope composition of atmospheric carbon monoxide : a modelling study / Sergey S. Gromov." Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1051305497/34.

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Czuba, Eva. "Development of a technique to study stable carbon isotope composition of NMHCs in ambient air." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0020/MQ56169.pdf.

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Upsdell, Brynn. "The carbon and nitrogen composition of suspended particulate matter in Lake Erie, selected tributaries, and its outflow." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1219.

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Abstract (sommario):
Since their introduction to Lake Erie, dreissenid mussels may have reengineered the cycling of nutrients in the lake so that the nearshore benthic community intercepts, retains, and recycles greater quantities of nutrients. This study traces particulate matter on a basin scale by characterizing the chemical composition (POC and PN concentrations, POC/PN mass ratios, &delta;<sup>13</sup>C and &delta;<sup>15</sup>N) of suspended particulate matter in Lake Erie, three tributary inflows, and the lake outflow between May and October, 2002. The data are used to 1) determine the relative contri
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Hamilton, Bryan T. "Small Mammals in portions of Great Basin National Park Susceptible to Groundwater Withdrawal: Diversity and Stable Isotope Perspectives." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1705.

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To support population growth in Las Vegas, Nevada, large scale increases in groundwater pumping are planned across the state. This pumping could affect riparian areas in Great Basin National Park by lowering groundwater levels, reducing stream flows, and xerifying riparian vegetation. Great Basin National Park (GBNP) is mandated to manage its resources unimpaired for future generations. Loss of biodiversity is unacceptable under this mandate. If groundwater levels are reduced beyond a threshold, aquatic and riparian diversity would be lost, but the effects on small mammal communities are less
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Xia, Yang. "Impact of varying NH₄⁺˸NO₃⁻ ratios in nutrient solution on C-isotope composition of leaf- and root-respired CO₂ and putative respiratory substrates in C₃ plants." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS222.

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La composition isotopique (¹³C/¹²C) du CO₂ respiré par les feuilles et les racines dans l'obscurité et celle des substrats respiratoires putatifs, y compris les sucres solubles et les acides organiques (malate et citrate), l'activité de la PEPc ainsi que les échanges gazeux des feuilles ont été déterminés sur le haricot (Phaseolus vulgaris L.) et l’épinards (Spinacia oleracea L.) cultivés dans du sable avec différents rapports NH₄⁺: NO₃⁻ dans N fourni. Le CO₂ respiré par les feuilles était enrichi en ¹³C sous NO₃⁻ s’appauvrissant progressivement avec l’augmentation de la fraction de NH₄⁺ dans
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Yang, Chengfan. "Li isotope study of Yangtze River sediments : new constraints on climate, weathering and carbon cycle relationships." Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS433.pdf.

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Au cours de ce travail, j’ai réalisé une série d'études dans le bassin du Changjiang (Yangtze), afin de mieux comprendre l'influence de ces effets.Tout d'abord, l'exploitation du barrage des Trois Gorges (TGD) a modifié la composition géochimique des sédiments en aval. Depuis 2003, les sédiments venant des hauts bassins ont été en grande partie retenus en amont, tandis que les sédiments précédemment déposés dans le bassin moyen-inférieur ont été progressivement remis en suspension. Ces processus expliquent l’évolution géochimique des sédiments exportés vers la mer de Chine. En deuxième partie,
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Allan, Wendy Lynne. "Variation in the stable carbon isotope composition of needle and annual rings in Pseudotsuga menziesii (Mirb.) Franco and its relation to water use needle nitrogen content and productivity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq21902.pdf.

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Rabarijaona, Arivoara. "L'efficience intrinsèque d'utilisation de l'eau (WUEi) du chêne sessile conditionne-t-elle sa résilience à la sécheresse ?" Electronic Thesis or Diss., Paris, AgroParisTech, 2023. http://www.theses.fr/2023AGPT0016.

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Abstract (sommario):
La migration assistée constitue une solution pour adapter les peuplements forestiers face à l'augmentation en intensité et fréquence des sécheresse. Elle nécessite néanmoins l'identification des populations les plus résilientes à la sécheresse, et la caractérisation de leur diversité. L'efficience d'utilisation de l'eau (WUE) est un trait pertinent à évaluer pour ce choix car elle traduit un compromis entre l'assimilation carbonée et la perte d'eau par transpiration. En combinant dendrochronologie et isotopie, cette thèse évalue le rôle de WUE sur les performances de croissance et la résilienc
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Fichtler, Esther [Verfasser], Martin [Akademischer Betreuer] Worbes, and Rupert [Akademischer Betreuer] Wimmer. "Ecological information of ring width, stable carbon isotope composition and wood anatomical variables in tropical tree rings - A contribution to dendrochronology in the tropics / Esther Fichtler. Gutachter: Martin Worbes ; Rupert Wimmer. Betreuer: Martin Worbes." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042262241/34.

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Libri sul tema "Carbon isotope composition"

1

Geological Survey (U.S.), ed. Sulfur/carbon ratios and sulfur isotope composition of some Cretaceous shales from the western interior of North America. Dept. of the Interior, U.S. Geological Survey, 1985.

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Martin, Whalen, and United States. National Aeronautics and Space Administration., eds. Carbon and hydrogen isotope composition and ℗£þ́C concentration in methane from sources and from the atmosphere: Implications for a global methane budget. National Aeronautics and Space Administration, 1994.

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Martin, Whalen, and United States. National Aeronautics and Space Administration., eds. Carbon and hydrogen isotope composition and C concentration in methane from sources and from the atmosphere: Implications for a global methane budget. National Aeronautics and Space Administration, 1994.

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Geological Survey (U.S.) and United States Air Force, eds. Polychlorinated biphenyls in aquatic invertebrates and fish and observations about nitrogen and carbon isotope composition in relation to trophic structure and bioaccumulation patterns, Lake Worth and Meandering Road Creek, Fort Worth, Texas, 2007-08. U.S. Dept. of the Interior, U.S. Geological Survey, 2010.

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Westgate, Timothy David. Compositional and carbon isotopic characteristics of abiogenically derived hydrocarbons at the Kidd Creek Mine, Timmins, Ontario. National Library of Canada, 1998.

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Licari, Laetitia. Ecological preferences of benthic foraminifera in the eastern South Atlantic: Distribution patterns, stable carbon isotopic composition, and paleoceanographic implications = Ökologische Ansprüche benthischer Foraminiferen im östlichen Südatlantik : Faunenverbreituhg, Zusammensetzung stabiler Kohlenstoffisotope und paläozeanographische Bedeutung. Alfred-Wegener-Institut für Polar- und Meeresforschung, 2006.

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Ellam, Rob. 3. You are what you eat … plus a few per mil. Oxford University Press, 2016. http://dx.doi.org/10.1093/actrade/9780198723622.003.0003.

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‘You are what you eat … plus a few per mil’ explains delta notation and organic isotopic fractionation. An isotopic balance has to be maintained, so the isotopic fractionation into a mineral crystallizing from a fluid will be balanced by a change in the isotopic composition of the remaining fluid. Carbon, nitrogen, oxygen, and strontium isotope values can be measured through the food chain and in animal and human bones. There is also a geographical oxygen isotope zonation, but this is disrupted by major changes in topography. Isotopic measurements helped in identifying King Richard III’s bones
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National Aeronautics and Space Administration (NASA) Staff. Carbon and Hydrogen Isotope Composition and C-14 Concentration in Methane from Sources and from the Atmosphere: Implications for a Global Methane Budget. Independently Published, 2018.

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Capitoli di libri sul tema "Carbon isotope composition"

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Huston, David L., Robert B. Trumbull, Georges Beaudoin, and Trevor Ireland. "Light Stable Isotopes (H, B, C, O and S) in Ore Studies—Methods, Theory, Applications and Uncertainties." In Isotopes in Economic Geology, Metallogenesis and Exploration. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-27897-6_8.

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AbstractVariations in the abundances of light stable isotopes, particularly those of hydrogen, boron, carbon, oxygen and sulfur, were essential in developing mineralization models. The data provide constraints on sources of hydrothermal fluids, carbon, boron and sulfur, track interaction of these fluids with the rocks at both the deposit and district scales, and establish processes of ore deposition. In providing such constraints, isotopic data have been integral in developing genetic models for porphyry-epithermal, volcanic-hosted massive sulfide, orogenic gold, sediment-hosted base metal and
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Quesnel, Benoît, Christophe Scheffer, and Georges Beaudoin. "The Light Stable Isotope (Hydrogen, Boron, Carbon, Nitrogen, Oxygen, Silicon, Sulfur) Composition of Orogenic Gold Deposits." In Isotopes in Economic Geology, Metallogenesis and Exploration. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-27897-6_10.

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AbstractOrogenic gold deposits formed in various terranes of most ages since the Paleoarchean and generally consist of quartz veins hosted in shear zones formed at the ductile brittle transition under greenschist to lower amphibolite metamorphic conditions. Vein mineralogy is dominated by quartz with various amounts of silicates, carbonates, phyllosilicates, borates, tungstates, sulfides, and oxides. The isotopic composition of these minerals and fluid inclusions has been investigated since the 1960s to constrain the characteristics of orogenic fluid systems involved in the formation of gold d
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Hoefs, J. "The Carbon and Oxygen Isotope Composition of Pancreatic Stones." In Chronic Pancreatitis. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75319-0_18.

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Kelly, Eugene F., Caroline Yonker, and Bruno Marino. "Stable Carbon Isotope Composition of Paleosols: An Application to Holocene." In Climate Change in Continental Isotopic Records. American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm078p0233.

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Hornibrook, Edward R. C. "The Stable Carbon Isotope Composition of Methane Produced and Emitted from Northern Peatlands." In Carbon Cycling in Northern Peatlands. American Geophysical Union, 2013. http://dx.doi.org/10.1029/2008gm000828.

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Singh, Gyanesh Kumar, Debajyoti Paul, Prashant Rajput, and Tarun Gupta. "Stable Carbon Isotope and Bulk Composition of Wintertime Aerosols from Kanpur." In Energy, Environment, and Sustainability. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7332-8_10.

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Rachold, V., and H. W. Hubberten. "Carbon Isotope Composition of Particulate Organic Material in East Siberian Rivers." In Land-Ocean Systems in the Siberian Arctic. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-60134-7_21.

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Pataki, Diane E., James T. Randerson, Wenwen Wang, MaryKay Herzenach, and Nancy E. Grulke. "The Carbon Isotope Composition of Plants and Soils as Biomarkers of Pollution." In Isoscapes. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3354-3_19.

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Leng, Melanie J., and Jonathan P. Lewis. "C/N ratios and Carbon Isotope Composition of Organic Matter in Estuarine Environments." In Applications of Paleoenvironmental Techniques in Estuarine Studies. Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-0990-1_9.

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Sun, Fengmei, Guangyu Shi, Huiwen Wang, and Shuming Yang. "Relationship Between Diet and Stable Carbon and Nitrogen Isotope Composition in Beef Tissues." In Proceedings of the 2012 International Conference on Applied Biotechnology (ICAB 2012). Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37922-2_115.

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Atti di convegni sul tema "Carbon isotope composition"

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Almubarak, Zainab, Mohammad Alrowaie, Feng Lu, and Ranya Algeer. "Gas Chemical and Carbon Isotope Composition as a Diagnostic Tool for Energy." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209992-ms.

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Abstract As the world is moving toward a low-carbon energy structure, natural gas has become critical in the supply of global energy. The genetic identification of different types of natural gas is important for the assessment of their source and exploration potential. Chemical and carbon isotopic compositions of produced gas are useful tools to assess their origin, thermal maturity, migration and to monitor gas production. In this study, we present different geochemical approaches to assess the origin of the gases and thermal maturity as well as to evaluate the effect of adsorption on shale g
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Koksalan, T., K. A. Khan, R. S. Alwaeel, N. M. Aljneibi, and M. N. A. Alblooshi. "Innovative Isotopes Tracking: A Cost-Effective Approach for Monitoring of Injected CO2 Flood Advancement in Oil Reservoirs." In ADIPEC. SPE, 2024. http://dx.doi.org/10.2118/222173-ms.

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Abstract Assessing sweep efficiency and recognizing the point of breakthrough are critical for evaluating an Enhanced Oil Recovery (EOR) effort employing miscible CO2 Gas injection. This study aimed to employ CO2 carbon isotope composition and molar concentration to monitor sweep efficiency and breakthrough in production wells of an ADNOC Onshore field to optimize the project, such as adjusting injector and future production well placements. The integration of CO2 molar concentration data along with carbon and oxygen isotope readings, helped to assess the influence of CO2 Injection EOR. The pr
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Ahsan, Dr Syed Asif, Reem Ali Mabkhout AlSeiari, Dr Tamer Koksalan, and Yatindra Bhushan. "Assessment of Sweep Efficiency and Breakthrough Using CO2, H2O, Carbon and Hydrogen Isotope Composition in a Water Alternating with Gas EOR Project in Onshore Abu Dhabi, UAE." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/208211-ms.

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Abstract Measuring sweep efficiency and understanding breakthrough are the most important parameters to assess an Enhanced Oil Recovery (EOR) project having Water Alternating with miscible CO2 Gas (WAG) injection. The objective of this study was to use CO2, H2O and isotope compositions to assess sweep efficiency and breakthrough in producer wells in an ADNOC Onshore field in order to take the necessary actions for project optimization (e.g., injector and/or future producer well location optimization). CO2 and H2O compositions, along with their respective carbon and hydrogen isotopes, was integ
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Bekker, Andrey, and Logan Magad-Weiss. "Carbon Isotope Composition of Seawater in the Aftermath of the Lomagundi Carbon Isotope Excursion." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.158.

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Pyrayev, A. N., and A. A. Maksimova. "ISOTOPIC COMPOSITION OF GROUNDWATER IN OIL AND GAS DEPOSITS IN THE CENTRAL PART OF THE TRANS-URAL MEGAMONOCLISE." In All-Russian Youth Scientific Conference with the Participation of Foreign Scientists Trofimuk Readings - 2021. Novosibirsk State University, 2021. http://dx.doi.org/10.25205/978-5-4437-1251-2-117-120.

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The article presents the first results of complex isotope-hydrogeochemical studies of reservoir waters of the Upper Jurassic deposits of the central regions of the Zaural megamonoclysis. It was shown that most waters have a narrow distribution of oxygen and hy-drogen isotopes (δD from 103,2 to –85,6 % and δ18O from –15,4 to –12,9 %). Some of them have pronounced excursions on the isotopic composition, which indicates a difference in their genesis: from condensate to mixed with ancient infiltrogenic. The isotopic composition of car-bon of water-dissolved carbon dioxide (δ13СDIC from –41,6 to –
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Husseinzadeh, R. "Thermal Maturities Based on Stable Carbon Isotope Composition Gases." In Caspian and Black Sea Geosciences Conference. EAGE Publications BV, 2008. http://dx.doi.org/10.3997/2214-4609.20146144.

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Engel, M. H., S. A. Macko, and J. A. Silter. "Carbon isotope composition of individual amino acids in the Murchison meteorite." In Physical orgin of homochirality in life. AIP, 1996. http://dx.doi.org/10.1063/1.51236.

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Goncharov, I., R. Kashapov, S. Fadeeva, et al. "OILS OF NONMARINE GENESIS WITH AN ABNORMALLY LIGHT ISOTOPE COMPOSITION OF CARBON." In 30th International Meeting on Organic Geochemistry (IMOG 2021). European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202134078.

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Chernykh, A. V., A. N. Pyrayev, and F. F. Dultsev. "NEW DATA ON THE ISOTOPIC COMPOSITION OF BRINES OF OIL AND GAS DEPOSITS OF THE SIBERIAN PLATFORM." In All-Russian Youth Scientific Conference with the Participation of Foreign Scientists Trofimuk Readings - 2021. Novosibirsk State University, 2021. http://dx.doi.org/10.25205/978-5-4437-1251-2-121-125.

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The new isotope-geochemical data on the Siberian platform supersaturated brines of a wide stratigraphic range (from Riphean to Ordovician) are presented. There is a wide range of oxygen and hydrogen stable isotope composition in the studied brines: from –133 to –17,5 % for δD and from –17,0 to –2,5 % for δ18O. The δD and δ18O values point on the sedimentation-metamorphic genesis of the brines. The carbon isotope composition of the DIC in brines range from –31 to +12,7 %. It is supposed that DIC has the biogenic (bacterial) origin. The youngest brine DIC has the heaviest carbon isotope composit
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Chen, Zeya, Jianfa Chen, and Caisheng Fei. "The Character and Origin of Abnormal Heavy Carbon Isotope Composition in Sedementary Organic Matter." In 29th International Meeting on Organic Geochemistry. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902913.

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Rapporti di organizzazioni sul tema "Carbon isotope composition"

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Fourqurean, James, Johannes Krause, Juan González-Corredor, Tom Frankovich, and Justin Campbell. Caricas Partner's Practical Field and Laboratory Guide. Florida International University, 2024. http://dx.doi.org/10.25148/merc_fac.2024.32.

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This field and laboratory guide describes the field and laboratory methods used to characterize blue carbon in seagrass meadows. It was developed for the Caribbean Carbon Accounting in Seagrass project and describes the protocols and methods used by the network. In brief, at each project site, seagrass abundance, species composition, canopy height, and sediment type were assessed at sixteen 0.25 m2 quadrats placed at random locations within the site. Eight 20 cm diameter cores were taken to assess seagrass biomass, shoot density, and to provide the material for assessing seagrass carbon and nu
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Altabet, M. A. Tracing the Fate of Enhanced Organic Carbon Production during a Southern Ocean Fe Fertilization Experiment using Natural Variations in Carbon and Nitrogen Isotopic Composition. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/837333.

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Piper, Stephen, and Ralph Keeling. Study of the Role of Terrestrial Processes in the Carbon Cycle Based on Measurements of the Abundance and Isotopic Composition of Atmospheric CO2. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1032487.

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Boreham, C. J., L. Wang, J. Sohn, et al. Exploring for the Future - NDI Carrara 1 gas geochemistry: molecular composition, carbon and hydrogen isotopes of hydrocarbon gases, and the sources of molecular hydrogen and helium. Geoscience Australia, 2022. http://dx.doi.org/10.11636/record.2022.014.

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Keeling, Ralph. Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1165340.

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