Hongwei, Kuang; Yongqing, Liu; Jiahua, Li; Nan, Peng; Shunshe, Luo; Chao, Cen (2011): Table 2: Isotopic and elemental compositions of Mesoproterozoic carbonates from Yanshan, North China [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.772724, Supplement to: Hongwei, K et al. (2011): Carbon and oxygen isotopic stratigraphy of mesoproterozoic carbonate sequences (1.6-1.4 Ga) from Yanshan in North China. International Journal of Oceanography, Article ID 410621, 1-11, https://doi.org/10.1155/2011/410621
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Abstract:
In Yanshan, located in the northern part of North China, Mesoproterozoic carbonate sequences (1.6-1.4 Ga) form a 10, 000m thick succession in an aulacogen basin. Carbon and oxygen isotope (d13O and d18O, resp.) data were obtained from 110 carbonate samples across three sections of these Mesoproterozoic deposits. From the early to late Mesoproterozoic, low negative values of d13O appear, followed by low positive variation and then a stable increase. An abrupt decrease in d13O values, with subsequent rapid increase, is found at the end of the Mesoproterozoic. During the whole Mesoproterozoic, d18O shows a mainly negative trend and occasional highly negative isotopic shifts (from lower to upper deposits). Whole-rock carbon and oxygen isotopic compositions and profilesmust be studied to provide a paleogeochemical record that can be associated with paleocean sedimentary environments, temperature, biological productivity, and sea-level fluctuations. Results of the present study correlate well with other international carbon and oxygen isotope profiles, suggesting that a global marine geochemical system existed during the interval of 1.6-1.4 Ga under a globally united tectonic, sedimentary, and geochemical background.
Coverage:
Latitude: 38.018000 * Longitude: 117.200000
Minimum DEPTH, sediment/rock: 536.03 m * Maximum DEPTH, sediment/rock: 5047.09 m
Event(s):
Yanshan * Latitude: 38.018000 * Longitude: 117.200000 * Location: Yanshan (Cangzhou), northeast China * Method/Device: Geological profile sampling (GEOPRO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Formation | Formation | Hongwei, Kuang | |||
| 2 | Sample code/label | Sample label | Hongwei, Kuang | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Lithology/composition/facies | Lithology | Hongwei, Kuang | |||
| 5 | δ13C, carbonate | δ13C carb | ‰ PDB | Hongwei, Kuang | ||
| 6 | δ18O, carbonate | δ18O carb | ‰ PDB | Hongwei, Kuang | ||
| 7 | Manganese/Strontium ratio | Mn/Sr | Hongwei, Kuang | |||
| 8 | Strontium | Sr | mg/kg | Hongwei, Kuang | ||
| 9 | Magnesium/Calcium ratio | Mg/Ca | Hongwei, Kuang |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
705 data points