Results 231 to 240 of about 127,134 (305)

Stable Carbon and Oxygen Isotope Analysis of Carbonates and DIC Using the Delta Ray Isotope Ratio Infrared Spectrometer (IRIS): Precise and Accurate Measurements Applying a 3‐Point Calibration and Standard Bracketing

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 6, 30 March 2026.
ABSTRACT Rationale The Delta Ray Isotope Ratio Infrared Spectrometer enables to determine δ13C and δ18O values of CO2. The measurements are calibrated against internal reference gas standards. For discrete carbonate or dissolved inorganic carbon (DIC) samples, the manufacturer recommends a calibration against two isotopically different carbonate ...
Maximilian Hansen   +3 more
wiley   +1 more source

Irmeli Helin 1944–2023

open access: yesMikael: Kääntämisen ja tulkkauksen tutkimuksen aikakauslehti
Alho, Marjut   +3 more
openaire   +2 more sources

Two‐Stage Dolomite Formation in Carbonate Platforms Revealed by Carbonate Clumped Isotope Thermometry

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The “dolomite problem” refers to the scarcity of dolomite in Cenozoic marine environments compared with its abundance in earlier strata. This discrepancy has been attributed to changes in marine environments or to insufficient thermal maturity required for dolomite formation.
Y. Levenson   +5 more
wiley   +1 more source

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