Carbon and oxygen isotope geochemistry of marbles in the Jingshan Group, Jiaobei Terrane and its indication to the Lomagundi-Jatuli Event
文献类型：期刊论文
| 作者 | Li KaiYue; Tang HaoShu3; Chen YanJing; Xue LiZhi; Wang Pin4; Sun ZhiFu1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2020 |
| 卷号 | 36期号:4页码:1059 |
| 关键词 | Lomagundi-Jatuli Event Great Oxidation Event delta C-13(carb) anomaly Lugezhuang Formation of Jingshan Group Jiaobei Terrain |
| ISSN号 | 2095-8927 |
| DOI | 10.18654/1000-0569/2020.04.06 |
| 英文摘要 | The rapid rise of atmospheric oxygen content in Paleoproterozoic (i.e., Great Oxidation Event) resulted in many dramatic changes in earth's surficial system, including the 2.3 similar to 2.06Ma positive delta C-13(carb) excursion, termed Lomagundi-Jatuli Event, which has been a focus of international geological and geochemical studies. The Lugezhuang Formation, lower portion of the Jingshan Group, is a high amphibolite to granulite facies metamorphic carbonate association. Herewith we report the results obtained from isotope and element geochemical study of 26 marble and 7 dolomitic quartzite samples from the Lugzhuang Formation at Shanhou village. The delta C-13(carb) values of the samples range from -0.8 parts per thousand to +3.4 parts per thousand (V-PDB), with an average of +1.4 parts per thousand. The delta C-13(carb) averages of marbles and dolomitic quartzites are +1.6 parts per thousand and +0.9 parts per thousand, respectively. The delta O-18(carb) values range from 9.3 parts per thousand to 20.2 parts per thousand (V-SMOW), with an average of 14.0 parts per thousand. The delta O-18(carb) and delta C-13(carb) values positively correlate, and 13 samples show Mn/Sr ratios of >6. This indicates that the delta C-13(carb) values of carbonates have been intensely modified by metamorphism, possibly causing a decrease of delta C-13(carb) values by 3 parts per thousand to 5 parts per thousand. Hence, the delta C-13(carb) values originally sedimentary carbonates are possibly up to +8.4 parts per thousand, showing positive delta C-13(carb) excursion characterizing the global Lomagundi-Jatuli Event. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18589]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China 2.Shandong Gold Grp Co Ltd, Laizhou 261442, Peoples R China 3.Peking Univ, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li KaiYue,Tang HaoShu,Chen YanJing,et al. Carbon and oxygen isotope geochemistry of marbles in the Jingshan Group, Jiaobei Terrane and its indication to the Lomagundi-Jatuli Event[J]. ACTA PETROLOGICA SINICA,2020,36(4):1059, 1075. |
| APA | Li KaiYue,Tang HaoShu,Chen YanJing,Xue LiZhi,Wang Pin,&Sun ZhiFu.(2020).Carbon and oxygen isotope geochemistry of marbles in the Jingshan Group, Jiaobei Terrane and its indication to the Lomagundi-Jatuli Event.ACTA PETROLOGICA SINICA,36(4),1059. |
| MLA | Li KaiYue,et al."Carbon and oxygen isotope geochemistry of marbles in the Jingshan Group, Jiaobei Terrane and its indication to the Lomagundi-Jatuli Event".ACTA PETROLOGICA SINICA 36.4(2020):1059. |
入库方式： OAI收割
来源：南海海洋研究所
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