Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan
Carbon isotope stratigraphy is an important means to subdivide and correlate the Cambrian strata. Based on the carbon isotope analysis of the carbonate strata of Lütuogou Section, northern Henan Province, it is found the δ13C value of carbonate samples collected from the base of the Drumian Stage at...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Bulletin of Geological Science and Technology
2022-09-01
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| Series: | 地质科技通报 |
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| Online Access: | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.2022.0196 |
| _version_ | 1797277584004743168 |
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| author | Yonglin Chen Xi Wang Yanhui Wang Shuai Yao Guodian Bai Huaibin Fang |
| author_facet | Yonglin Chen Xi Wang Yanhui Wang Shuai Yao Guodian Bai Huaibin Fang |
| author_sort | Yonglin Chen |
| collection | DOAJ |
| description | Carbon isotope stratigraphy is an important means to subdivide and correlate the Cambrian strata. Based on the carbon isotope analysis of the carbonate strata of Lütuogou Section, northern Henan Province, it is found the δ13C value of carbonate samples collected from the base of the Drumian Stage at Lütuogou Section, northern Henan, ranges from 3.1‰ to -1.7‰, and the δ18O value ranges from -3.9‰ to -9.4‰. No covariance exists between δ13C and δ18O, which implies that the carbon isotope composition is nearly stable. Value of δ13C around the base of the Drumian Stage consists of a negative excursion, the amplitude of the negative excursion is 3.0‰, and the minimum value of δ13C is -1.7‰, which occurs at the place 15 m below the first occurrence of trilobite protasaphiscus. The position and amplitude of the negative excursion are similar to those of the drum carbon isotope excursion (DICE) tested in the Wangcun Section, western Hunan, South China, and the Drum Mountains section in Utah, USA, which suggests that the DICE can be used as a global indicator for the correlation of the Drumian Stage. Furthermore, the cyan shale with thin limestone at the position of minimum δ13C overlies the oolitic limestone; therefore, DICE occurs in the transgressive succession in the early Miaolingian. |
| first_indexed | 2024-03-07T15:50:31Z |
| format | Article |
| id | doaj.art-99219eabb7eb4095a2a45e4bcee13873 |
| institution | Directory Open Access Journal |
| issn | 2096-8523 |
| language | zho |
| last_indexed | 2024-03-07T15:50:31Z |
| publishDate | 2022-09-01 |
| publisher | Editorial Department of Bulletin of Geological Science and Technology |
| record_format | Article |
| series | 地质科技通报 |
| spelling | doaj.art-99219eabb7eb4095a2a45e4bcee138732024-03-05T02:58:18ZzhoEditorial Department of Bulletin of Geological Science and Technology地质科技通报2096-85232022-09-0141513214010.19509/j.cnki.dzkq.2022.0196dzkjtb-41-5-132Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern HenanYonglin Chen0Xi Wang1Yanhui Wang2Shuai Yao3Guodian Bai4Huaibin Fang5Henan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaHenan Institute of Geological Survey, Zhengzhou 450001, ChinaCarbon isotope stratigraphy is an important means to subdivide and correlate the Cambrian strata. Based on the carbon isotope analysis of the carbonate strata of Lütuogou Section, northern Henan Province, it is found the δ13C value of carbonate samples collected from the base of the Drumian Stage at Lütuogou Section, northern Henan, ranges from 3.1‰ to -1.7‰, and the δ18O value ranges from -3.9‰ to -9.4‰. No covariance exists between δ13C and δ18O, which implies that the carbon isotope composition is nearly stable. Value of δ13C around the base of the Drumian Stage consists of a negative excursion, the amplitude of the negative excursion is 3.0‰, and the minimum value of δ13C is -1.7‰, which occurs at the place 15 m below the first occurrence of trilobite protasaphiscus. The position and amplitude of the negative excursion are similar to those of the drum carbon isotope excursion (DICE) tested in the Wangcun Section, western Hunan, South China, and the Drum Mountains section in Utah, USA, which suggests that the DICE can be used as a global indicator for the correlation of the Drumian Stage. Furthermore, the cyan shale with thin limestone at the position of minimum δ13C overlies the oolitic limestone; therefore, DICE occurs in the transgressive succession in the early Miaolingian.https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.2022.0196carbon isotope compositiondice negative excursiondrumian stagecambrian |
| spellingShingle | Yonglin Chen Xi Wang Yanhui Wang Shuai Yao Guodian Bai Huaibin Fang Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan 地质科技通报 carbon isotope composition dice negative excursion drumian stage cambrian |
| title | Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan |
| title_full | Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan |
| title_fullStr | Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan |
| title_full_unstemmed | Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan |
| title_short | Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan |
| title_sort | carbon isotope composition and its evolution around the base of the drumian stage in linzhou area northern henan |
| topic | carbon isotope composition dice negative excursion drumian stage cambrian |
| url | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.2022.0196 |
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