投稿时间：2016-08-15
修订日期：2016-10-20
网络发布日期：2017-01-04
中文摘要:前陆盆地蕴藏有巨量的钾盐资源，而对于其内的钾盐矿床成因和模式还欠缺系统的总结。西班牙埃布罗盆地是由于伊比利亚和欧亚块体碰撞而形成的前陆盆地。始新世晚期（约36 Ma）海水完全从盆地退出后，在极端干旱气候作用下，由于碰撞造山导致盆地的封闭作用，在南比利牛斯前陆盆地系统的前渊带（即埃布罗盆地北部）形成了典型的厚层含钾石盐-光卤石的正常海相蒸发岩序列。后期受到构造挤压作用，钾盐地层以盐底劈的形式出露在背斜核部。埃布罗盆地钾盐成因是构造、气候和物源三者耦合作用的结果，与中国库车前陆盆地有很大的相似性。据此，作者建议可重点关注盆地南北盐丘地带苏维依组蒸发岩以及卤水的迁移方向。
Abstract:The foreland basin hosts huge reserves of potash salts, although there is no systematic summary of the genesis and formation model of potash salts deposits. The Ebro Basin is a typical foreland basin produced by the collision between Euro-Asia and Iberia plates. Nearly isochronous sea retreat that occurred at the late Eocene (~36 Ma) led to the transition from marine to continent. Basin closure caused by orogeny and continentalization combined with arid climate led to precipitation of relatively thick typical marine evaporite sequences containing sylvite and carnallite in the fore-deep area of South Pyrenean foreland systems. Potash salts were exposed in the core of the anticlines as salt diapirs after successive tectonic compression. Potash salts in the Ebro Basin are the coupling mechanism of tectonism, climate, and source, similar to features of the Kuqa foreland basin. It is thus held that further work should focus on the evaporites in the Suweiyi Formation in salt domes and transportation of the brines. Key Words: geology,foreland basin, potash deposit of metallogenic, model of potash deposit, Ebro Basin
文章编号：
中图分类号：P619.211
文献标志码：
基金项目:本文得到国家重点发展研究计划项目（973计划）（编号：2011CB403007）和国家自然科学基金项目（编号：41572067）联合资助
引用文本：
王立成,刘成林,王延路.2016.前陆盆地钾盐矿床成因及模式——以西班牙北部埃布罗盆地为例[J].矿床地质,35(6):1243~1256WANG LiCheng,LIU ChengLin,WANG YanLu.2016.Genesis and formation model of potash deposits in foreland basins: A case study of Ebro Basin, northern Spain[J].Mineral Deposits35(6):1243~1256
图/表
