Reaffirming the consistency of the original stock of NBS 19 limestone and its byproduct with finer grain size for δ13C and δ18O calibrations—Both distributed internationally
July 1, 2026
Rationale
Citation Information
| Publication Year | 2026 |
|---|---|
| Title | Reaffirming the consistency of the original stock of NBS 19 limestone and its byproduct with finer grain size for δ13C and δ18O calibrations—Both distributed internationally |
| DOI | 10.1002/rcm.70131 |
| Authors | Haiping Qi, Tyler B. Coplen, Lauren T Reid, Stanley J. Mroczkowski |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Rapid Communications in Mass Spectrometry |
| Index ID | 70277804 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | WMA - Laboratory & Analytical Services Division |
Related
Carbon and oxygen isotopic compositions of NBS 19 limestone isotopic reference material and its byproduct calcite having finer grain size, measured at the U.S. Geological Survey Reston Stable Isotope Laboratory (RSIL), 2025 Carbon and oxygen isotopic compositions of NBS 19 limestone isotopic reference material and its byproduct calcite having finer grain size, measured at the U.S. Geological Survey Reston Stable Isotope Laboratory (RSIL), 2025
Approximately 3 to 4 kg of NBS 19 limestone, prepared in 1982 by the U.S. Geological Survey (USGS), serves as a primary reference for the carbon isotope scales VPDB and VPDB-LSVEC and the oxygen isotope scale VPDB. Its consensus values are +1.95 ‰ for δ¹³C and –2.2 ‰ for δ¹⁸O measurements. After more than three decades of distribution, the number of units labeled “NBS 19” shrunk...
Related
Carbon and oxygen isotopic compositions of NBS 19 limestone isotopic reference material and its byproduct calcite having finer grain size, measured at the U.S. Geological Survey Reston Stable Isotope Laboratory (RSIL), 2025 Carbon and oxygen isotopic compositions of NBS 19 limestone isotopic reference material and its byproduct calcite having finer grain size, measured at the U.S. Geological Survey Reston Stable Isotope Laboratory (RSIL), 2025
Approximately 3 to 4 kg of NBS 19 limestone, prepared in 1982 by the U.S. Geological Survey (USGS), serves as a primary reference for the carbon isotope scales VPDB and VPDB-LSVEC and the oxygen isotope scale VPDB. Its consensus values are +1.95 ‰ for δ¹³C and –2.2 ‰ for δ¹⁸O measurements. After more than three decades of distribution, the number of units labeled “NBS 19” shrunk...