Li, Gang (2022): 87Sr/86Sr results of Well NK1 from southern South China Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945012
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
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.
Supplement to:
Li, Gang; Xu, Weihai; Luo, Yun; Liu, Jianguo; Zhao, Jian-Xin; Feng, Yuexing; Cheng, Jun; Sun, Zhen; Xiang, Rong; Xu, Min; Yan, Wen (2022): Strontium isotope stratigraphy and LA-ICP-MS U-Pb carbonate age constraints on the Cenozoic tectonic evolution of the southern South China Sea. Geological Society of America Bulletin, https://doi.org/10.1130/B36365.1
Source:
Li, Gang; Xu, Weihai; Luo, Yun; Liu, Jianguo; Zhao, Jian-Xin; Feng, Yuexing; Cheng, Jun; Sun, Zhen; Xiang, Rong; Xu, Min; Yan, Wen: Supplemental Material: Strontium isotope stratigraphy and LA-ICP-MS U-Pb carbonate age constraints on the Cenozoic tectonic evolution of the southern South China Sea. figshare, https://doi.org/10.1130/GSAB.S.19416395.v1
Funding:
Coverage:
Latitude: 9.920000 * Longitude: 115.560000
Minimum DEPTH, sediment/rock: 5.12 m * Maximum DEPTH, sediment/rock: 990.16 m
Event(s):
NK1 * Latitude: 9.920000 * Longitude: 115.560000 * Elevation: 3.0 m * Recovery: 2020.2 m * Location: South China Sea * Method/Device: Core wireline system (CWS) * Comment: Drilled from May 2017 to January 2018
Comment:
*Median standard deviations for triple measurements.
**Median standard deviation incorporating the external SRM987 errors with measurement errors of samples and the standard.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample number | Sample no | Li, Gang | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Li, Gang | Geocode | |
| 3 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Li, Gang | |||
| 4 | Strontium-87/Strontium-86 ratio, standard deviation | 87Sr/86Sr std dev | ± | Li, Gang | 2σ* | |
| 5 | Strontium-87/Strontium-86 ratio, standard deviation | 87Sr/86Sr std dev | ± | Li, Gang | 2σ** | |
| 6 | Age, dated | Age dated | ka | Li, Gang | LOWESS 6 calibration curve of McArthur et al. (2020) after incorporating all errors | Mean |
| 7 | Age, dated, range, minimum | Age dated min | ka | Li, Gang | LOWESS 6 calibration curve of McArthur et al. (2020) after incorporating all errors | |
| 8 | Age, dated, range, maximum | Age dated max | ka | Li, Gang | LOWESS 6 calibration curve of McArthur et al. (2020) after incorporating all errors | |
| 9 | Comment | Comment | Li, Gang |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1806 data points