Oxygen isotope
Continental recycling: The oxygen isotope point of view
... the oxygen isotope composition of seawater might have been constant throughout the Earth’s history [Gregory and Taylor, 1981; Holland, 1984; Jean-Baptiste et ...of oxygen isotope exchange, ...
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Thermophysiologies of Jurassic marine crocodylomorphs inferred from the oxygen isotope composition of their tooth apatite
... the oxygen isotope composition of teleosaurid apatite in terms of body temperature may be strongly biased by their possible semi-aquatic and eurhyaline ecology, some species having been found in estuarine ...
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Identification of the parent bodies of micrometeorites with high-precision oxygen isotope ratios
... performed oxygen isotope measure- ments of 33 large (diameter N500 μm) silicate (“stony”) CSs from the Transantarctic Mountains collection using IRMS at CEREGE and Open ...
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The Production and Characterisation of High Purity Ozone and Experimental and Modelling Studies of Anomalous Oxygen Isotope Effects in the Formation of Carbon Dioxide from Irradiated Mixtures of Carbon Monoxide and Ozone or Oxygen
... dance dependent penetration depths. Since 16 O is the most abundant isotope (see Table 1.3) its penetration depth is much shorter than that of the rarer isotopes. CO possesses well sep- arated absorption lines in ...
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Stable oxygen isotope analysis of Phorcus lineatus (da Costa, 1778) as a proxy for foraging seasonality during the Mesolithic in northern Iberia
... stable oxygen isotope analysis of Phorcus lineatus (da Costa, 1778), one of the most widespread molluscs in northern Iberian mesolithic coastal sites, in order to determine the season in which humans ...
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Oxygen Isotope Variability of Planktonic Foraminifera Provide Clues to Past Upper Ocean Seasonal Variability
... single‐shell isotope results show that the variance in Globigerina bulloides oxygen isotope values corresponds to the insolation at the core ...
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Triple oxygen isotope systematics of evaporation and mixing processes in a dynamic desert lake system
... triple oxygen isotope space ...triple oxygen iso- tope plot that we attributed to either mixing or cut-off from recharge and evolution along a simple evaporation ...
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Sulfur and oxygen isotope tracing in zero valent iron based Insitu remediation system for metal contaminants
... Sulfur and oxygen isotope tracing in zero valent iron based Insitu remediation system for metal contam- inants... Abstract:.[r] ...
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Contrasting shell growth strategies in two Mediterranean bivalves revealed by oxygen-isotope ratio geochemistry: The case of Pecten jacobaeus and Glycymeris pilosa
... Shell oxygen-isotope ratios were successfully applied to determine the ontogenetic age of several Pectinidae species ...of oxygen-isotope ratios for (paleo-) environmental reconstruc- tions ...
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Effects of leaf length and development stage on the triple oxygen isotope signature of grass leaf water and phytoliths: insights for a proxy of continental atmospheric humidity
... triple oxygen isotope compositions of grass leaf water δ 18 O LW of the bulk leaf water can be estimated from the Craig and Gordon model applied to plant leaf water by Far- quhar et ...same isotope ...
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The triple oxygen isotope composition of phytoliths as a proxy of continental atmospheric humidity: insights from climate chamber and climate transect calibrations
... The sampled site location as well as the associated cli- matic and oxygen isotope variables are given in Table 2. The vegetation overlying the sampled soils was categorized into savanna (Mauritania, ...
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Methodological improvements for investigating silcrete formation: petrography, FT-IR and oxygen isotope ratio of silcrete quartz cement, Lake Eyre Basin (Australia)
... the oxygen isotopic compo- sition of the silica cement of a silcrete sample from the bCordillo silcreteQ of the Lake Eyre Basin (South Australia) has been ...The oxygen isotopic composition of a mineral ...
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Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth
... when referencing seasonality, temperature is considered as the variable of interest. However, the tropics have relatively small seasonal temperature variability compared with higher latitudes, the core is situated along ...
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Diatom-oxygen isotope record from high-altitude Lake Petit (2200 m a.s.l.) in the Mediterranean Alps: shedding light on a climatic pulse at 4.2 ka
... Correspondence: Rosine Cartier (rosine.cartier@geol.lu.se) Received: 15 August 2018 – Discussion started: 3 September 2018 Accepted: 30 December 2018 – Published: 7 February 2019 Abstract. In the Mediterranean area, the ...
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Inter-laboratory comparison of oxygen isotope compositions from biogenic silica
... The oxygen-isotope composition (d 18 O value) of bio- genic silica is widely used as a proxy indicator for paleocli- mate reconstruction from marine ( Matheney and Knauth, 1989; Shemesh et ...exchangeable ...
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Oxygen isotope fractionation between human phosphate and water revisited
... carbon isotope analyses of bone collagen ...carbon isotope analysis of bone and tooth carbonate ( Lee-Thorp et ...However, oxygen isotope compositions of human phosphatic tissues, which can be ...
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The Oxygen Isotope Compositions of Large Numbers of Small Cosmic Spherules: Implications for Their Sources and the Isotopic Composition of the Upper Atmosphere
... The Oxygen Isotope Compositions of Large Numbers of Small Cosmic Spherules: Implications for Their Sources and the Isotopic Composition of the Upper Atmosphere ...
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Quantifying molecular oxygen isotope variations during a Heinrich stadial
... an oxygen isotope mass balance model using spatial and tem- poral fields of (i) temperature and relative humidity from the AOGCM IPSL-CM4, (ii) PFT distribution and GPP provided by the dynamic global ...
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Oxygen isotope analyses of fine silica grains using laser-extraction technique : comparison with oxygen isotope data obtained from ion microprobe analyses and application to quartzite and silcrete cement investigation
... the oxygen isotope composition (d 18 O) of fine quartz size fractions 50–20, 20–10, 10–5, 5–2, 2–1 and <1 lm has been validated by comparison with the ion microprobe ...groundwater. Oxygen iso- ...
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A study of drought-induced photosynthesis and stomatal limitations using carbon and oxygen isotope signals in tree-ring cellulose
... 2.3 Stable isotope data 2.3.1 Cellulose data The 2004 annual rings from three individuals were cut into 40-µm sections using a microtome (Polycut E,Leica Microsystems, Brensheim, Germany). Each slice was then ...
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