Minimum Bedrock Exposure Ages and Their Implications: Larsemann Hills and Neighboring Bolingen Islands, East Antarctica
文献类型：期刊论文
| 作者 | Huang Feixin1,2; Li Guangwei2,5; Liu Xiaohan2; Kong Ping3; Ju Yitai1; Fink, David4; Fang Aimin3; Yu Liangjun3 |
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2010 |
| 卷号 | 84期号:3页码:543-548 |
| 关键词 | East Antarctica Larsemann Hills Bolingen Islands 10be Exposure Age Erosion Rate |
| ISSN号 | 1000-9515 |
| 文献子类 | Article |
| 英文摘要 | Considerable controversy exists over whether or not extensive glaciation occurred during the global Last Glacial Maximum (LGM) in the Larsemann Hills. In this study we use the in situ produced cosmogenic nuclide 10Be (half life 1.51 Ma) to provide minimum exposure ages for six bedrock samples and one erratic boulder in order to determine the last period of deglaciation in the Larsemann Hills and on the neighboring Bolingen Islands. Three bedrock samples taken from Friendship Mountain (the highest peak on the Mirror Peninsula, Larsemann Hills; similar to 2 km from the ice sheet) have minimum exposure ages ranging from 40.0 to 44.7 ka. The erratic boulder from Peak 106 (just at the edge of the ice sheet) has a younger minimum exposure age of only 8.8 ka. The minimum exposure ages for two bedrock samples from Blundell Peak (the highest peak on Stornes Peninsula, Larsemann Hills; similar to 2 km from the ice sheet) are about 17 and 18 ka. On the Bolingen Islands (southwest to the Larsemann Hills; similar to 10 km from the ice sheet), the minimum exposure age for one bedrock sample is similar to that at Friendship Mountain (i.e., 44 ka). Our results indicate that the bedrock exposure in the Larsemann Hills and on the neighboring Bolingen Islands commenced obviously before the global LGM (i.e., 20-22 ka), and the bedrock erosion rates at the Antarctic coast areas may be obviously higher than in the interior land. |
| WOS关键词 | LAST GLACIAL MAXIMUM ; ICE-SHEET ; PRYDZ BAY ; COSMOGENIC NUCLIDES ; SIRIUS GROUP ; DRY-VALLEYS ; BE-10 ; AL-26 ; HISTORY ; EROSION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000278516400009 |
| 出版者 | WILEY-BLACKWELL |
| 资助机构 | National Science Fund of China(40506003 ; National Science Fund of China(40506003 ; Chinese Polar Science Strategy Research Fund(20070219) ; Chinese Polar Science Strategy Research Fund(20070219) ; 40631004) ; 40631004) ; National Science Fund of China(40506003 ; National Science Fund of China(40506003 ; Chinese Polar Science Strategy Research Fund(20070219) ; Chinese Polar Science Strategy Research Fund(20070219) ; 40631004) ; 40631004) ; National Science Fund of China(40506003 ; National Science Fund of China(40506003 ; Chinese Polar Science Strategy Research Fund(20070219) ; Chinese Polar Science Strategy Research Fund(20070219) ; 40631004) ; 40631004) ; National Science Fund of China(40506003 ; National Science Fund of China(40506003 ; Chinese Polar Science Strategy Research Fund(20070219) ; Chinese Polar Science Strategy Research Fund(20070219) ; 40631004) ; 40631004) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72741]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Huang Feixin |
| 作者单位 | 1.China Met Geol Bur, Inst Mineral Resources Res, Beijing 100025, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Australian Nucl Sci & Technol Org, Menai, NSW 2234, Australia 5.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang Feixin,Li Guangwei,Liu Xiaohan,et al. Minimum Bedrock Exposure Ages and Their Implications: Larsemann Hills and Neighboring Bolingen Islands, East Antarctica[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2010,84(3):543-548. |
| APA | Huang Feixin.,Li Guangwei.,Liu Xiaohan.,Kong Ping.,Ju Yitai.,...&Yu Liangjun.(2010).Minimum Bedrock Exposure Ages and Their Implications: Larsemann Hills and Neighboring Bolingen Islands, East Antarctica.ACTA GEOLOGICA SINICA-ENGLISH EDITION,84(3),543-548. |
| MLA | Huang Feixin,et al."Minimum Bedrock Exposure Ages and Their Implications: Larsemann Hills and Neighboring Bolingen Islands, East Antarctica".ACTA GEOLOGICA SINICA-ENGLISH EDITION 84.3(2010):543-548. |
入库方式： OAI收割
来源：地质与地球物理研究所
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