干旱区生态环境知识资源中心(Arid): 甘孜绒坝岔古冰川演化与黄土古土壤对比研究

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	甘孜绒坝岔古冰川演化与黄土古土壤对比研究
其他题名	The Quaternary Glaciation in Rongbacha and Correlation with the Loess-Paleosol in Garze
	许刘兵 1; 周尚哲 1; 李昌爱 2; 崔建新 1; 赵井东 3; 业渝光 4
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2003
卷号	25 期号:5 页码:504-509
中文摘要	横断山脉绒坝岔，保留有从倒数第二次冰期到新冰期的较完整的冰川沉积序列。对冰碛物进行了ESR测年，其分别形成于5.6ka BP、新冰期与末次冰期之间、16.3 ka BP、18.7 ka BP、43.7 ka BP以及倒数第二次冰期。TL测年结果显示，甘孜雅砻江江畔价地黄土从末次冰期之初开始堆积，结合甘孜黄土－古土壤序列代用指标的综合分析，发现绒坝岔冰碛物形成年代与甘孜剖面黄土、古土壤沉积年代有较好的对应关系。末次冰盛期（LGM），绒坝岔冰碛垄走向有一次接近90°的改变；末次冰期间冰段，对应于MIS 3b，其次川规模甚至超过了LGM时期。
英文摘要	Rongbacha paleoglaciers of Garze are lo-cated in the Hengduan Mountains, which lies in the eastern part of the Tibetan Plateau. They are the typical Quaternary glaciers in this region. Prof. Li Jijun ever named it as Rongbacha Ice Age. There is a relatively integrated glacier sequence from the Penultimate Glaciation to the Neoglacia-tion. Here, the technique of Electron Spin Reso-nance (ESR) is used to date the samples collected from this region. They formed at about 5. 6 ka BP, the time between the Neoglaciation and the Last Glaciation Maximum, 16. 3 ka BP, 18. 7 ka BP, 43. 7 ka BP and the Penultimate Glaciation, respec-tively. Thermoluminescent (TL) dating suggests the loess, which lies on the riverside terraces of the Yalong Rivre in GarzS, deposited from the early Last Glaciation. Besides, combining with the synthetical analysis on the proxies of the loess-pal-eosol sequence in Garze, we can find that the glac-ier tills and the loess-paleosol in the Garzg almost deposited simultaneously. This indicates that they have been controlled by the same climate system since at least the last interglacial. At the Last Glaciation Maximum, the glacial tills in Rongbacha experienced a strike changing of nearly 90°, which was intimately related to the ex-tremely arid and frigid climate at that time. In the interstadial of Last Glaciation, corresponding to MIS (marine isotope state) 3b, the glacier scale in Rongbacha even exceeded that of the last Glaci-ation Maximum.
中文关键词	绒坝岔冰川 ; 横断山脉 ; ESR测年 ; 黄土沉积
英文关键词	Rfongbacha Glacier the Hengduan Mountains ESR dating loess deposition
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:1168143
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203828
作者单位	1.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国; 2.安徽师范大学地理系, 芜湖, 安徽 241000, 中国; 3.徐州师范大学地理系, 徐州, 江苏 221000, 中国; 4.地质矿产部海洋地质研究所, 青岛, 山东 266071, 中国
推荐引用方式 GB/T 7714	许刘兵,周尚哲,李昌爱,等. 甘孜绒坝岔古冰川演化与黄土古土壤对比研究[J]. 兰州大学,2003,25(5):504-509.
APA	许刘兵,周尚哲,李昌爱,崔建新,赵井东,&业渝光.(2003).甘孜绒坝岔古冰川演化与黄土古土壤对比研究.冰川冻土,25(5),504-509.
MLA	许刘兵,et al."甘孜绒坝岔古冰川演化与黄土古土壤对比研究".冰川冻土 25.5(2003):504-509.