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| DOI | 10.1002/2016GC006437 |
| Miocene high-elevation landscape of the eastern Tibetan Plateau | |
| Xu, Qiang; Liu, Xiaohui; Ding, Lin | |
| 通讯作者 | Xu, Q (通讯作者) |
| 发表日期 | 2016 |
| EISSN | 1525-2027 |
| 起始页码 | 4254 |
| 结束页码 | 4267 |
| 卷号 | 17期号:10 |
| 英文摘要 | The high topography of central Asia is the most distinctive expression of the India-Asia collision, yet a broad understanding of the timing and processes involved in the development of the Tibetan Plateau remains elusive. Here we investigate the Neogene Songpan Basin located on the eastern margin of the plateau using oxygen isotope paleoaltimetry to determine when the steep Longmen Shan margin obtained its present elevations. Hydrologically open lacustrine and fluvial-alluvial authigenic carbonates from the basin record the paleoelevations of the eastern Tibetan Plateau and suggest that the area has attained near-present elevations of similar to 3000 m by the late Miocene. This reconstruction is consistent with the results from the comparison of pollen fossils to their nearest living relatives in this area (2750-3050 m). We propose that the eastern Tibetan Plateau may have attained significant elevations prior to the late Miocene through an uplift scenario involving eastward growth of the plateau between the Eocene and the Miocene. Two tectonic processes, either crustal shortening in the Oligocene-Miocene or eastward propagation of weakened lower crust starting in the Eocene, most likely thickened the crust and raised the surface of the eastern Tibetan Plateau to its present elevation by the late Miocene. |
| 关键词 | LONGMEN SHANASIAN MONSOONQIANGTANG TERRANESTABLE-ISOTOPESSICHUAN BASINMARGINEOCENECHINAPALEOELEVATIONEVOLUTION |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000388694600025 |
| 来源期刊 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258643 |
| 推荐引用方式 GB/T 7714 | Xu, Qiang,Liu, Xiaohui,Ding, Lin. Miocene high-elevation landscape of the eastern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2016,17(10). |
| APA | Xu, Qiang,Liu, Xiaohui,&Ding, Lin.(2016).Miocene high-elevation landscape of the eastern Tibetan Plateau.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,17(10). |
| MLA | Xu, Qiang,et al."Miocene high-elevation landscape of the eastern Tibetan Plateau".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 17.10(2016). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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