Unlocking the geochemical features of the Paleocene southern Pacific Ocean using carbon isotopes and biolipids
文献类型：期刊论文
| 作者 | Jiang, Lian1,3; Ausin, Blanca5; Khanolkar, Sonal2,4; Wang, Yunpeng1; George, Simon C.3 |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2024-09-15 |
| 卷号 | 650页码:13 |
| 关键词 | International Ocean Discovery Program (IODP) Expedition 378 Hopanoid Steroid New Zealand |
| ISSN号 | 0031-0182 |
| DOI | 10.1016/j.palaeo.2024.112368 |
| 英文摘要 | Little is known about the Paleocene in the southern Pacific Ocean due to scarce marine records. Here, we present a systematic geochemical investigation using biomarkers, carbonate content, and carbon isotopes of a set of early Paleocene deep-sea cores from International Ocean Discovery Program Expedition 378 Site U1553. The results provide a new Paleocene biomarker profile for the Campbell Plateau, New Zealand. The occurrence and distribution of a series of hopenes, beta beta hopanes, sterenes and biomarker-based maturity parameters indicate that these organically-lean sediments are in an early diagenetic stage, with an equivalent vitrinite reflectance of approximately 0.4%. Biomarker data (e.g., gammacerane index and homohopane index), carbonate carbon isotopes (-27.9 parts per thousand to +2.0 parts per thousand) combined with onboard data (sulphur and methane contents) indicate that the redox properties of the Paleocene southern Pacific Ocean changed from an oxidising-anoxic transition zone to a more reducing marine environment (water depth > 1000 m). The sources of the organic matter are diverse, including algae, bacteria, diatoms, dinoflagellates, and higher plants, but are dominated by aquatic organisms. Our new biomarker record bridges a Paleocene biosphere knowledge gap in the high latitude South Pacific. |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:001274135400001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78162]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Jiang, Lian; Wang, Yunpeng |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 2.GEOMAR Helmholtz Zentrum Ozeanforsch, Kiel, Germany 3.Macquarie Univ, Sch Nat Sci, Sydney, NSW, Australia 4.Indian Inst Technol, Dept Earth Sci, Gandhinagar, India 5.Salamanca Univ, Geol Dept, Salamanca, Spain |
| 推荐引用方式 GB/T 7714 | Jiang, Lian,Ausin, Blanca,Khanolkar, Sonal,et al. Unlocking the geochemical features of the Paleocene southern Pacific Ocean using carbon isotopes and biolipids[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,650:13. |
| APA | Jiang, Lian,Ausin, Blanca,Khanolkar, Sonal,Wang, Yunpeng,&George, Simon C..(2024).Unlocking the geochemical features of the Paleocene southern Pacific Ocean using carbon isotopes and biolipids.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,650,13. |
| MLA | Jiang, Lian,et al."Unlocking the geochemical features of the Paleocene southern Pacific Ocean using carbon isotopes and biolipids".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 650(2024):13. |
入库方式： OAI收割
来源：广州地球化学研究所
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