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| Main Authors: | , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2011
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| Online Access: | https://doi.org/10.1594/PANGAEA.772724 |
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| _version_ | 1867168101659836416 |
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| author | Hongwei, Kuang Yongqing, Liu Jiahua, Li Nan, Peng Shunshe, Luo Chao, Cen |
| author_facet | Hongwei, Kuang Yongqing, Liu Jiahua, Li Nan, Peng Shunshe, Luo Chao, Cen |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_772724 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Table 2: Isotopic and elemental compositions of Mesoproterozoic carbonates from Yanshan, North China Hongwei, Kuang Yongqing, Liu Jiahua, Li Nan, Peng Shunshe, Luo Chao, Cen DEPTH, sediment/rock; Formation; Geological profile sampling; GEOPRO; Lithology/composition/facies; Magnesium/Calcium ratio; Manganese/Strontium ratio; Sample code/label; Strontium; Yanshan; Yanshan (Cangzhou), northeast China; δ13C, carbonate; δ18O, carbonate 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. |
| title | Table 2: Isotopic and elemental compositions of Mesoproterozoic carbonates from Yanshan, North China |
| topic | DEPTH, sediment/rock; Formation; Geological profile sampling; GEOPRO; Lithology/composition/facies; Magnesium/Calcium ratio; Manganese/Strontium ratio; Sample code/label; Strontium; Yanshan; Yanshan (Cangzhou), northeast China; δ13C, carbonate; δ18O, carbonate |
| url | https://doi.org/10.1594/PANGAEA.772724 |