scholarly journals Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountains: Constraining the parent body and implications for the impact scenario

2012 ◽  
Vol 47 (11) ◽  
pp. 1738-1747
Author(s):  
M. Van GINNEKEN ◽  
C. SUAVET ◽  
C. CORDIER ◽  
L. FOLCO ◽  
P. ROCHETTE ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Isotope Composition ◽  
Parent Body ◽  
Oxygen Isotope Composition ◽  
Transantarctic Mountains ◽  
The Impact

The impact of an inverse climate–isotope relationship in soil water on the oxygen‐isotope composition of Larix gmelinii in Siberia

2015 ◽  
Vol 209 (3) ◽  
pp. 955-964 ◽  
Author(s):  
Matthias Saurer ◽  
Alexander V. Kirdyanov ◽  
Anatoly S. Prokushkin ◽  
Katja T. Rinne ◽  
Rolf T. W. Siegwolf
Keyword(s):  
Oxygen Isotope ◽  
Soil Water ◽  
Isotope Composition ◽  
Oxygen Isotope Composition ◽  
Larix Gmelinii ◽  
The Impact

The oxygen isotope composition of diogenites: Evidence for early global melting on a single, compositionally diverse, HED parent body

2014 ◽  
Vol 390 ◽  
pp. 165-174 ◽  
Author(s):  
Richard C. Greenwood ◽  
Jean-Alix Barrat ◽  
Akira Yamaguchi ◽  
Ian A. Franchi ◽  
Edward R.D. Scott ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Isotope Composition ◽  
Parent Body ◽  
Oxygen Isotope Composition

Accuracy and reproducibility of the triple oxygen isotope measurement of silicate micro-samples by laser-fluorination-IRMS

2020 ◽  
Author(s):  
Martine Couapel ◽  
Corinne Sonzogni ◽  
Anne Alexandre ◽  
Florence Sylvestre
Keyword(s):  
Oxygen Isotope ◽  
Isotope Composition ◽  
Parent Body ◽  
Leaf Water ◽  
Oxygen Isotope Composition ◽  
High Time Resolution ◽  
Trace Back ◽  
San Carlos Olivine ◽  
Isotope Ratio Mass Spectrometer ◽  
Laser Fluorination

<p>Recent studies showed that the <sup>17</sup>O-excess of plant leaf biogenic silicates (phytoliths) can be used to quantify the atmospheric relative humidity occurring during leaf water transpiration. The <sup>17</sup>O-excess vs ∂<sup>18</sup>O signature of phytoliths can also be used to trace back to the signature of leaf water. In a similar way, the signature of lacustrine diatoms is expected to record the signature of the lake water in which they formed. Therefore, the triple oxygen isotope composition of biogenic silicates extracted from well-dated sedimentary cores may bring new insights for past climate and hydrological reconstructions. However, for high time-resolution reconstructions, we need to be able to measure microsamples (300 to 800 µg) of biogenic silica. In another context, the triple oxygen isotope composition of micro-meteorites constitutes an efficient tool to determine their parent-body. In this case too, micro-samples need to be handled.</p><p>Here we report the results of new ∂<sup>18</sup>O and ∂<sup>17</sup>O measurements of macro- and micro-samples of international and laboratory silicate standards (e.g. NBS28 quartz, San Carlos Olivine, Boulangé quartz, MSG phytoliths and PS diatoms). Molecular O<sub>2</sub> is extracted from silica and purified in a laser-fluorination line, passed through a 114°C slush to condense potential interfering gasses and sent to the dual-inlet Isotope Ratio Mass Spectrometer (IRMS) Thermo-Scientific Delta V. In order to get sufficient 34/32 and 33/32 signals for microsamples the O<sub>2</sub> gas is concentrated within the IRMS in an additional auto-cooled 800 ml microvolume tube filled with silica gel. Accuracy and reproducibility of the ∂<sup>18</sup>O, ∂<sup>17</sup>O and <sup>17</sup>O excess measurements are assessed. Attention is payed to determine the concentration from which O<sub>2</sub> gas yields offsets in ∂<sup>18</sup>O, ∂<sup>17</sup>O and <sup>17</sup>O-excess are measured and whether these offsets are reproducible and can be corrected for.</p>

Oxygen isotope composition of Holocene dolomite formed in a humid hypersaline setting: Comment and Reply

Geology ◽  
1993 ◽  
Vol 21 (3) ◽  
pp. 281 ◽  
Author(s):  
Gerald M. Friedman ◽  
R. P. Major ◽  
R. Michael Lloyd ◽  
F. Jerry Lucia
Keyword(s):  
Oxygen Isotope ◽  
Isotope Composition ◽  
Oxygen Isotope Composition

Stable Hydrogen and Oxygen Isotope Composition of Waters from Mine Tailings in Different Climatic Environments

2007 ◽  
Vol 41 (6) ◽  
pp. 1870-1876 ◽  
Author(s):  
Jorge E. Spangenberg ◽  
Bernhard Dold ◽  
Marie-Louise Vogt ◽  
Hans-Rudolf Pfeifer
Keyword(s):  
Oxygen Isotope ◽  
Mine Tailings ◽  
Isotope Composition ◽  
Oxygen Isotope Composition ◽  
Hydrogen And Oxygen Isotope
Sign in / Sign up

Export Citation Format

Share Document