| 太白山第四纪冰碛物特征与冰期 |
| |
| 引用本文： | 马秋华,何元庆.太白山第四纪冰碛物特征与冰期[J].冰川冻土,1988(1). |
| |
| 作者姓名： | 马秋华 何元庆 |
| |
| 作者单位： | 中国科学院兰州冰川冻土研究所
(马秋华)，中国科学院兰州冰川冻土研究所(何元庆) |
| |
| 摘 要： | 在晚更新世早期(Q_3~1)和晚期(Q_8~3),太白山主峰八仙台先后发生过两次冰川作用,即三爷海冰期和太白冰期。其中太白冰期又可划分为早太白和晚太白两个副冰期。经人工剖面证实的三道不同时期的侧碛垄分别与上述冰期相对应。各种冰蚀地貌都受到该区构造的控制和影响。
|
| 关 键 词： | 冰川地貌 冰川作用 冰期 |
Moraine Features and Ice Ages of the Quaternary in the Taibai Mountain |
| |
| Ma Qiuhua,He Yuanqing.Moraine Features and Ice Ages of the Quaternary in the Taibai Mountain[J].Journal of Glaciology and Geocryology,1988(1). |
| |
| Authors: | Ma Qiuhua He Yuanqing |
| |
| Abstract: | Baxiantai ( the highest peak of the Taibai Mountain, 3767m a.s.l.)is located in the border among Taibai, Meixian and Zhouzhi counties.During earlier and later periods of tho Late Pleistocene, two glaciations occurred at Baxiantai, that is, the Sanyehai Ice Age and the Taibai Ice Age. In the Taibai lce Age two sub-ice ages can be divided. By excavating artificial sections the authors have confirmed that there are thfee moraines in the Eryehai glacial valley located in the southern slope of Taibai Mountain.Some cirques and other glaciation vestiges are also found, corresponding with above-mentioned Ice Ages.Because of the uplift of the Taibai Mountain and fluctuations of snow-lines, all cirques of the Taibai Ice Age developed on the basis of earlier cirques The remainder of earlier cirques were preserved at the shoulder on one side of the cirque or at mountain redges between two later cirques as glacier scale deccreased. Before the end of the "Last Ice Age", some small parasitic cirques, such as the Day-ehai cirque and Eryehai cirque, has formed with the rise of snowlines.
These glacial landforms are controled in trend, location, shape and so on by tec-tonism. |
| |
| Keywords: | glacial landforms glaciation lce ages |
| 本文献已被 CNKI 等数据库收录！ |
|
