构造作用对四川盆地东部垫江盐盆三叠系嘉陵江组海相钾盐成矿—保存条件的影响

张雄; 朱正杰; 魏玉燕; 赵艳军; 张宇

doi:10.12090/j.issn.1006-6616.2019.25.S1.013

构造作用对四川盆地东部垫江盐盆三叠系嘉陵江组海相钾盐成矿—保存条件的影响

doi: 10.12090/j.issn.1006-6616.2019.25.S1.013

张雄^1,,
朱正杰^1, ,,
魏玉燕²,
赵艳军³,
张宇¹

1.
重庆地质矿产研究院外生成矿与矿山环境重庆市重点实验室, 重庆 400042
2.
四川省地质矿产勘查开发局化探队, 四川德阳 618000
3.
中国地质科学院矿产资源研究所, 北京 100037

基金项目:

重庆市国土资源和房屋管理局科技项目 CQGT-KJ-2017010

重庆市科基础科学与前沿技术研究项目 cstc2017jcyjAX0364

详细信息

作者简介:
张雄(1990-), 男, 硕士, 工程师, 研究方向构造地质与矿产地质研究。E-mail:zhangxiong305@163.com

通讯作者:
朱正杰(1983-)男, 博士, 正高级工程师, 研究方向矿床地球化学。E-mail:zhuzhjie@163.com

中图分类号: P619.211
计量
- 文章访问数: 183
- HTML全文浏览量: 100
- PDF下载量: 8
- 被引次数: 0
出版历程
- 刊出日期: 2019-05-28

RESEARCH ON THE EFFECT OF TECTONISM ON THE FORM AND PRESERVATION OF MARINE POTASH IN TRIASSIC JIALINGJIANG FORMATION IN DIANJIANG SALT BASIN, EASTERN SICHUAN BASIN

1.
Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing 400042, China
2.
Geochemistry Exploration Brigade of Sichuan Bureau of Exploration and Development of Geology and Minerals Resources, Deyang 618000, Sichuang, China
3.
Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China

摘要

摘要: 通过分析四川盆地东部垫江盐盆三叠纪嘉陵江成盐期构造演化及后期构造作用，结合大地电磁测深和地震资料解译等综合分析初步认为垫江盐盆三叠纪嘉陵江期，在整体海退的条件下，由于泸州—开江古隆起的逐步形成，在长寿合兴地区和垫江董家场地区形成有利于古卤水浓缩的次级凹陷。早白垩世末期川东褶皱带的形成虽然对三叠系含盐地层进行了改造，但次级凹陷位于向斜核部和褶皱倾末端，未受到风化剥蚀。同时，大地电磁测深和地震资料显示深部没有断裂构造穿过次级凹陷区域，初步证明具有较好的保存条件。
- 垫江盐盆 /
- 构造作用 /
- 次级凹陷 /
- 海相钾盐
Abstract: Based on the analysis of the tectonic evolution and late-stage tectonics of the Dianjiang Salt Basin in the eastern Sichuan Basin, combined with magnetotelluric sounding method and seismic data interpretation, this paper holds that there are two sub-depressions in the Dianjiang Salt Basin. Both Hexing sub-depression and Dongjiachang sub-depression are advantageous to the concentration of ancient brine. Although the formation of the eastern Sichuan fold belt in the late Early Cretaceous reformed the Triassic salt-bearing strata, the secondary depression area was located at the syncline core and the end of the fold dip, and was not subjected to weathering. Meanwhile, the magnetotelluric sounding and seismic data showed that no fault structure existed in the two depression area, indicating the well preservation conditions.
- Dianjiang Salt Basin /
- tectonism /
- sub-depression /
- marine potash

HTML全文

图 1 垫江盐盆地区地质简图

Figure 1. Simplified geological map of the Dianjiang depression

下载: 全尺寸图片幻灯片

图 2 四川盆地东部嘉陵江组四段二亚段古构造图^[16]

Figure 2. Palaeotectonic map of T₁j^4-2 in eastern Sichuan Basin^[16]

下载: 全尺寸图片幻灯片

图 3 垫江盐盆北部MT推断解释图

Figure 3. MT interpretation map of northern Dianjiang Salt Basin

下载: 全尺寸图片幻灯片

图 4 垫江盐盆嘉陵江组四段顶界地震反射构造平面图

Figure 4. Plan of seismic reflection structure at the top of the fourth section of Jialingjiang formation in the Dianjiang Salt Basin

下载: 全尺寸图片幻灯片

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