| Elemental geochemistry of lower Cambrian phosphate nodules in Guizhou Province, South China: An integrated study by LA-ICP-MS mapping and solution ICP-MS | |
| Ye, Yuntao1; Wang, Huajian1; Wang, Xiaomei1; Zhai, Lina2; Wu, Chaodong3,4; Zhang, Shuichang1 | |
| 2020-01-15 | |
| Source Publication | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| ISSN | 0031-0182 |
| Volume | 538Pages:13 |
| Corresponding Author | Zhang, Shuichang(sczhang@petrochina.com.cn) |
| Abstract | The late Ediacaran to early Cambrian transition was a critical interval in Earth history, during which both the environment and life experienced dramatic change. Relationships between these events, however, are widely debated. This time interval also witnessed the occurrence of massive phosphate deposits. Studies on the characteristics, origins, and depositional context of this geochemical archive may provide important insights into not only the ore-forming process but also the coevolution of the Earth surface system. Here, phosphate nodules from two sections (Jinsha and Songtao) are investigated using in-situ LA-ICP-MS mapping and solution ICP-MS methods. Elemental images and factor analyses of the LA-ICP-MS dataset show that Ca, P, and Sr are evenly distributed and co-enriched within the nodule, whereas iron-related elements (Fe, As, and Mo) are roughly present as concentric layers. The PAAS-normalized REE patterns of the Jinsha samples exhibit moderately negative Ce anomalies and pronounced MREE enrichments, possibly related to uptake of REE released by iron oxyhydroxides during early diagenesis. In contrast, the Songtao samples are characterized by more seawater-like signals with significantly lower Ce/Ce* and higher Eu/Eu* values. These positive Eu anomalies are ascribed to active submarine hydrothermal vents along the Yangtze Platform margin. Based on a compilation of published Ce/Ce* data, we suggest that the prominent negative Ce anomalies during the Ediacaran Cambrian phosphogenesis give evidence of possible link between P dynamics and ocean oxygenation. |
| Keyword | Carbonate fluorapatite Rare earth elements Cerium anomaly Europium anomaly Yangtze Block Oxygenation |
| DOI | 10.1016/j.palaeo.2019.109459 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFC0603101] ; National Science and Technology Major Project of the Ministry of Science and Technology of the People's Republic of China[2016ZX05004001] ; National Natural Science Foundation of China[41530317] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010101] ; Scientific Research and Technological Development Project of CNPC[2016A-0200] |
| WOS Research Area | Physical Geography ; Geology ; Paleontology |
| WOS Subject | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
| WOS ID | WOS:000508751800041 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/165371 |
| Collection | 海洋地质与环境重点实验室 |
| Corresponding Author | Zhang, Shuichang |
| Affiliation | 1.China Natl Petr Corp, Res Inst Petr Explorat & Dev, Key Lab Petr Geochem, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Minist Educ, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 4.Peking Univ, Inst Oil & Gas, Beijing 100871, Peoples R China |
| Recommended Citation GB/T 7714 | Ye, Yuntao,Wang, Huajian,Wang, Xiaomei,et al. Elemental geochemistry of lower Cambrian phosphate nodules in Guizhou Province, South China: An integrated study by LA-ICP-MS mapping and solution ICP-MS[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,538:13. |
| APA | Ye, Yuntao,Wang, Huajian,Wang, Xiaomei,Zhai, Lina,Wu, Chaodong,&Zhang, Shuichang.(2020).Elemental geochemistry of lower Cambrian phosphate nodules in Guizhou Province, South China: An integrated study by LA-ICP-MS mapping and solution ICP-MS.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,538,13. |
| MLA | Ye, Yuntao,et al."Elemental geochemistry of lower Cambrian phosphate nodules in Guizhou Province, South China: An integrated study by LA-ICP-MS mapping and solution ICP-MS".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 538(2020):13. |
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