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Isotopic composition of organic matter

Macko A, Estep MLF (1984) Microbial alteration of stable nitrogen and carbon isotopic compositions of organic matter. Org Geochem 6 787-790... [Pg.256]

Hodell, D.A., and Schelske, C.L. (1998) Production, sedimentation and isotopic composition of organic matter in Lake Ontario. Limnol. Oceanogr. 43, 200-214. [Pg.598]

Kienast, M. (2000). Unchanged nitrogen isotopic composition of organic matter in the South China Sea during the last climatic cycle Global implications. Paleoceanography. 15(2), 244—253. [Pg.297]

Beaumont V. and Robert F. (1998) Nitrogen isotopic composition of organic matter from Precambrian cherts new keys for nitrogen cycle evolution Bull. Soc. Geol. Fr. 169(2), 211-220. [Pg.3926]

The isotopic composition of the H transferred from NADPH to biosynthetic substrates must be one of the most important factors controlling the hydrogen-isotopic composition of organic matter. [Pg.235]

Van Kaam-Peters HME, Schouten S, Koster J, Damste JSS (1998) Controls on the molecular and carbon isotopic composition of organic matter deposited in a Kimmeridgian euxinic shelf sea Evidence for preservation of carbohydrates through sidfurisation. Geochim Cosmoschim Acta 62 3259-3283... [Pg.606]

Carbon isotope ratios are principally useful to distinguish between marine and terrestrial organic matter sources in sediments and to identify organic matter from different types of land plants. The stable carbon isotopic composition of organic matter reflects the isotopic composition of the carbon source as well as the discrimination (fractionation) between and... [Pg.151]

Fontugne, M.R., Calvert, S.E., 1992. Late Pleistocene variability of the carbon isotopic composition of organic matter in the eastern Mediterranean Moni-... [Pg.364]

Figure 3. Idealized carbon isotope cycle in a small stratified lake. The isotopic composition of organic matter buried in sediments is determined by the proportions of different terrestrial and lacustrine organic mailer. Ihccartron isotopic composition of dissolved inorganic carbon (DlC), and the rates of primary production and respiration within the water column. Isotope enrichment factors (e), listed here as the difference between the product and the substrate, vary with the form of DlC that lake algae assimilate (e.g., C02(aq) or HCOy ). Inorganic carbonate (CaC03> typically forms in isotopic equilibrium with the dissolved inorganic carbon pool and. as such, is indirectly affected by organic matter sources and primary production and respiration rales. Figure 3. Idealized carbon isotope cycle in a small stratified lake. The isotopic composition of organic matter buried in sediments is determined by the proportions of different terrestrial and lacustrine organic mailer. Ihccartron isotopic composition of dissolved inorganic carbon (DlC), and the rates of primary production and respiration within the water column. Isotope enrichment factors (e), listed here as the difference between the product and the substrate, vary with the form of DlC that lake algae assimilate (e.g., C02(aq) or HCOy ). Inorganic carbonate (CaC03> typically forms in isotopic equilibrium with the dissolved inorganic carbon pool and. as such, is indirectly affected by organic matter sources and primary production and respiration rales.
Clayton J. L. and Bostick N. H. (1986) Temperature effects on kerogen and on molecular and isotopic composition of organic matter in Pierre Shale near an igneous dyke. Org. Geochem. 10, 135-143. [Pg.338]

See other pages where Isotopic composition of organic matter is mentioned: [Pg.127]    [Pg.368]    [Pg.3356]    [Pg.3751]    [Pg.4409]    [Pg.588]    [Pg.356]    [Pg.562]    [Pg.1]    [Pg.262]    [Pg.262]    [Pg.246]    [Pg.247]    [Pg.249]    [Pg.250]    [Pg.253]    [Pg.253]    [Pg.222]    [Pg.223]   


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