Cenozoic organic carbon isotope and pollen records from the Xining Basin, NE Tibetan Plateau, and their palaeoenvironmental significance (SCI)
文献类型：期刊论文
| 作者 | Chi Y. P. ; Fang X. M. ; Song C. H. ; Miao Y. F. ; Teng X. H. ; Han W. X. ; Wu F. L. ; Yang J. W. |
| 刊名 | Palaeogeography Palaeoclimatology Palaeoecology
 |
| 出版日期 | 2013 |
| 卷号 | 386页码:436-444 |
| ISSN号 | ISBN/0031-0182 |
| 英文摘要 | Marine oxygen isotope records show that the Cenozoic global climate has undergone remarkable fundamental changes. However, how terrestrial ecosystems respond to these changes remains unclear. The Xining Basin on the northeastern Tibetan Plateau holds continuous fine fluvial-lacustrine sediments from the early Eocene to the early Miocene (between similar to 52 Ma and 17 Ma). This paper first presents total organic carbon isotope (delta C-13(TOC)) and pollen records from the Xiejia section in the Xining Basin, as indicators of the long-term terrestrial paleoecosystem and paleoclimate changes in the Asian interior of NW China. The delta C-13(TOC) record shows a long term persistently decreasing trend (from similar to-20 parts per thousand to -23.5 parts per thousand) superimposed with obvious cycles of five distinctive phases of heavier and lighter delta C-13(TOC) values, along with short pulses of especially low values occurring at similar to 32.5 Ma, 23 Ma, 21.5 Ma, and 18 Ma. These variations generally correlate with changes of gymnosperm content or the ratio of gymnosperm to angiosperm (G/A) |
| 收录类别 | (SCI) |
| 语种 | i.e., heavier delta C-13(TOC) values correspond with higher gymnosperm content or higher G/A, as well as with global temperatures (for both long term trends and shorter term fluctuations). We propose that global temperatures might provide the major factor controlling the evolution of the gymnosperm content (and the G/A ratio) that determines the delta C-13(TOC) in the sediments. The East Asian monsoon may not have reached this region during the deposition of the sediments, or alternatively, its signals could not clearly be identified in these low resolution paleoecologic records. (C) 2013 Published by Elsevier B.V. |
| 公开日期 | 2014-12-19 |
| 源URL | [http://ir.casnw.net/handle/362004/23094]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chi Y. P.,Fang X. M.,Song C. H.,et al. Cenozoic organic carbon isotope and pollen records from the Xining Basin, NE Tibetan Plateau, and their palaeoenvironmental significance (SCI)[J]. Palaeogeography Palaeoclimatology Palaeoecology,2013,386:436-444. |
| APA | Chi Y. P..,Fang X. M..,Song C. H..,Miao Y. F..,Teng X. H..,...&Yang J. W..(2013).Cenozoic organic carbon isotope and pollen records from the Xining Basin, NE Tibetan Plateau, and their palaeoenvironmental significance (SCI).Palaeogeography Palaeoclimatology Palaeoecology,386,436-444. |
| MLA | Chi Y. P.,et al."Cenozoic organic carbon isotope and pollen records from the Xining Basin, NE Tibetan Plateau, and their palaeoenvironmental significance (SCI)".Palaeogeography Palaeoclimatology Palaeoecology 386(2013):436-444. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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