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Study of uranium metallogenetic circumstance and metallogenetic prospective area selection in Chuanjin depression,Erlian basin
Author(s): 
Pages: 77-84
Year: Issue:  2
Journal: URANIUM GEOLOGY

Keyword:  川井坳陷三角洲相古河道砂岩型铀矿;
Abstract: 本文在简述二连盆地川井坳陷区域地质、区域水文地质特征的基础上,重点阐述了白垩系岩性岩相特点、岩石后生蚀变和铀矿化特征,并得出坳陷在纵横两方向上存在着较大的分割性和不均匀性,白音查干凹陷砂体属三角洲相叠加了河流相的新认识,进而提出了下白垩统为湖相→三角洲相→河流相的连续演化系列.从宏观、微观两方面论述了白音查干凹陷潜水和层间氧化带砂岩型铀矿成矿前景,同时,分片对整个川井坳陷成矿有利及不利因素作了评价.在对古河道发育情况、基底、构造、水文地质和后生蚀变、有机质等成矿条件分析的基础上,得出川井坳陷东部桑根达来凹陷西南缘为古河道砂岩型铀矿成矿有利地段的结论.
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