| 基岩中的大块地下冰 |
| |
| 引用本文： | 王保来.基岩中的大块地下冰[J].冰川冻土,1990,12(3):209-218. |
| |
| 作者姓名： | 王保来 |
| |
| 作者单位： | 中国科学院兰州冰川冻土研究所 |
| |
| 摘 要： |
|
| 关 键 词： | 冰块 大型 地下冰 基岩 侵入冰 |
Massive Ground Ice Within Bedrock |
| |
| Wang Baolai.Massive Ground Ice Within Bedrock[J].Journal of Glaciology and Geocryology,1990,12(3):209-218. |
| |
| Authors: | Wang Baolai |
| |
| Abstract: | There have been several hypothses proposed for the origin of massive ground ice oc-curing in unconsolidated sediments of Quaternary. Some of the hypothese are reviewed in this paper. As to the origin of massive ground ice at depth within bedrock, the possibilities that the ice can be of buried glacier ice, segregation ice, and segregation-intrusion ice can be discounted. Another possibility is that the ice formed by the freezing of bulk water in an existing aquifer, i.e., a cavity infilled by groundwater under artesian pressure as permafrost aggraded. However, it is hard to explain why such a cavity existed in the first place, and why the overlying strata did not collapse before the ice formed because the rock were fractured by faulting. It follows that a more likely possibility is that the massive ground ice formed by the in-situ freezing of groundwater intruded under pressure(i.e.intrusive ice). |
| |
| Keywords: | massive ground ice sediments bedrock groundwater under artesian pressure intrusive ice |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
