摘要
本文论述了阿什库勒盆地的地貌和沉积物的发育等问题。认为:(1)阿什库勒盆地的火山锥至少有11座,1号火山1951年不可能有岩浆喷发,火山泥石流体是不存在的;(2)黄土物质是全新世风积物,戈壁荒漠是其物源区;(3)阿什库勒湖与乌鲁克库勒湖均是火山堰塞湖,前者是18kaB.P.前熔岩流阻塞盆地东部出口而成;后者则是6.5kaB.P.新期火山喷发物拦截阿什库勒湖的部分水域所致。
This paper deals with the volcanoes and lava geomorphology, characteristics and sources of loesses deposits, as well as lacustrine and lake-levels fluctuation in Ashikule Basin. The following conclusions are obtained:
(1) There are at least 11 volcanic cones in the basin. It is not truthful that No. 1 Volc-anoe erupted in 1951. there is no volcanic mudflow deposits and/or fan in the basin.
(2) Both Ashikule Lake and Wulukekule Lake are volcanic dammed lakes, but the first lake was dammed 18 000 yr. B.P., and the second lake was dammed 6 500 yr. B-P.
(3) Loesses are the Holocene eolian deposits. They were from the gobi area of the basin.
出处
《地理学报》
EI
CSSCI
CSCD
北大核心
1991年第2期224-232,共9页
Acta Geographica Sinica
基金
国家基金委及中科院重大项目成果之一
