87Sr/86Sr results of Well NK1 from southern South China Sea
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2022
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| _version_ | 1867171880099643392 |
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| author | Li, Gang |
| author_facet | Li, Gang |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Bio-carbonates from Well NK1 were sampled from every chip using a micro-drill. Twenty-four chips were drilled twice and the duplicate samples were used for quality control. Sub-samples of 50 mg were firstly leached with 0.3 N acetic acid and Milli-Q water for 30 min to remove absorbed salt. Rinsed samples were placed in 1.5 ml of 1.0 N acetic acid and sonicated for 2 hrs. Elemental compositions of the carbonate phase were firstly measured on the ICP-MS using 0.5 mL of supernatant. Elemental concentrations and 87Sr/86Sr isotope of insoluble residue from one sample (NK1-Nd-73 at 721.85 m) were measured. Insoluble residue of this sample was digested using a mixture of HNO3 (0.2 ml) and HF (0.8 ml). Following a modified procedure by Deniel and Pin (2001), one-half milliliter of supernatant was loaded to the preconditioned Sr-Spec columns to separate strontium. Strontium-isotope ratios were measured on a Nu Plasma high-resolution (HR) multi-collector ICP-MS at the Radiogenic Isotope Facility, University of Queensland. The standard deviation of triple measurements is 0.000009 on average. During the course of measurements, analyses of NBS SRM987 yield a mean 87Sr/86Sr ratio of 0.710222 ± 20 (2σ). All data are normalized to 86Sr/88Sr = 0.1194 and the 87Sr/86Sr are corrected to SRM987 =0.710249 ± 28 (2σ) to reflect the long-term drift. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_945012 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | 87Sr/86Sr results of Well NK1 from southern South China Sea Li, Gang 87Sr/86Sr; Age, dated; Age, dated, range, maximum; Age, dated, range, minimum; Collision; Comment; Coral atoll; Core wireline system; CWS; Deep Drilling; DEPTH, sediment/rock; Hiatus; LOWESS 6 calibration curve of McArthur et al. (2020) after incorporating all errors; NK1; Sample number; South China Sea; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation Bio-carbonates from Well NK1 were sampled from every chip using a micro-drill. Twenty-four chips were drilled twice and the duplicate samples were used for quality control. Sub-samples of 50 mg were firstly leached with 0.3 N acetic acid and Milli-Q water for 30 min to remove absorbed salt. Rinsed samples were placed in 1.5 ml of 1.0 N acetic acid and sonicated for 2 hrs. Elemental compositions of the carbonate phase were firstly measured on the ICP-MS using 0.5 mL of supernatant. Elemental concentrations and 87Sr/86Sr isotope of insoluble residue from one sample (NK1-Nd-73 at 721.85 m) were measured. Insoluble residue of this sample was digested using a mixture of HNO3 (0.2 ml) and HF (0.8 ml). Following a modified procedure by Deniel and Pin (2001), one-half milliliter of supernatant was loaded to the preconditioned Sr-Spec columns to separate strontium. Strontium-isotope ratios were measured on a Nu Plasma high-resolution (HR) multi-collector ICP-MS at the Radiogenic Isotope Facility, University of Queensland. The standard deviation of triple measurements is 0.000009 on average. During the course of measurements, analyses of NBS SRM987 yield a mean 87Sr/86Sr ratio of 0.710222 ± 20 (2σ). All data are normalized to 86Sr/88Sr = 0.1194 and the 87Sr/86Sr are corrected to SRM987 =0.710249 ± 28 (2σ) to reflect the long-term drift. |
| title | 87Sr/86Sr results of Well NK1 from southern South China Sea |
| topic | 87Sr/86Sr; Age, dated; Age, dated, range, maximum; Age, dated, range, minimum; Collision; Comment; Coral atoll; Core wireline system; CWS; Deep Drilling; DEPTH, sediment/rock; Hiatus; LOWESS 6 calibration curve of McArthur et al. (2020) after incorporating all errors; NK1; Sample number; South China Sea; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.945012 |