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| DOI | 10.1111/bor.12653 |
| Younger Dryas and Early Holocene ice-margin dynamics in northwest Russia | |
| 发表日期 | 2024 |
| ISSN | 0300-9483 |
| EISSN | 1502-3885 |
| 英文摘要 | The dynamics of the last Fennoscandian Ice Sheet (FIS) are relatively well constrained in the Nordic countries. Ice-sheet dynamics in NW Russia, however, are comparatively less well understood owing to the scale and resolution of existing studies. New large-scale glacial geomorphological datasets from NW Russia based on high-resolution remotely sensed imagery allow for an independent reassessment of the extent and dynamics of the FIS during the Younger Dryas and Early Holocene (c. 12.9-10 ka) in NW Russia. The reconstruction provides a more detailed link between geomorphological expressions of palaeoglaciation than previous proposals. Rather than a continuous Younger Dryas ice marginal zone (IMZ) stretching from Finland to northern Norway, the geomorphological signature of NW Russia reveals 14 IMZs that document discrete stationary ice-margin positions (possibly standstill and/or readvance events) during the overall retreat. The relative age sequence of the IMZs, supported by an updated numerical age database, suggests that they formed time-transgressively during the Younger Dryas and Early Holocene rather than contemporaneously. Moreover, specific landform assemblages reveal contrasting glacial landsystems in NW Russia: (i) a northern subpolar glacial landsystem; and (ii) a southern temperate glacial landsystem. The model presented herein provides robust empirical constraints for testing and validating numerical ice-sheet models and understanding ice-sheet responses to rapid climate change. Although the dynamics of the last Fennoscandian Ice Sheet are relatively well constrained in the Nordic countries, ice-margin dynamics in NW Russia are comparatively less well understood. In this paper, large-scale geomorphological data and a comprehensive numerical age database are used to reconstruct Younger Dryas and Early Holocene ice-margin dynamics in NW Russia. image |
| 语种 | 英语 |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:001177105400001 |
| 来源期刊 | BOREAS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301349 |
| 作者单位 | University of Sheffield; University of Brighton; Norwegian University of Life Sciences; University of Witwatersrand |
| 推荐引用方式 GB/T 7714 | . Younger Dryas and Early Holocene ice-margin dynamics in northwest Russia[J],2024. |
| APA | (2024).Younger Dryas and Early Holocene ice-margin dynamics in northwest Russia.BOREAS. |
| MLA | "Younger Dryas and Early Holocene ice-margin dynamics in northwest Russia".BOREAS (2024). |
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