柴达木盆地马海盐湖厚层芒硝沉积特征及其成因-岩石矿物学杂志-CSCIED科技核心评价数据库-手机版

柴达木盆地马海盐湖厚层芒硝沉积特征及其成因

Sedimentary characteristics and genesis analysis of thick-layer mirabilite in Mahai Salt Lake, Qaidam Basin

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DOI	10.20086/j.cnki.yskw.2025.3148
刊名	岩石矿物学杂志 Acta Petrologica et Mineralogica
年，卷(期)	2025, 44(2)
作者	贺荟文，赵艳军，阮壮，王楠*，崔子豪，胡宇飞,
作者单位	1. 中国地质科学院矿产资源研究所, 自然资源部深地资源成矿作用与矿产资源预测重点实验室, 北京 100037; 2. 中国地质大学(北京)地球科学与资源学院, 北京 100083; 3. 自然资源实物地质资料中心, 河北廊坊 065201
摘要	柴达木盆地马海盐湖含钾地层下部沉积了厚层芒硝。与钾盐通常形成于干热气候不同,芒硝是典型的冷相盐类矿物,因此厚层芒硝的沉积特征及成因的研究对认识古环境演变过程及其对钾盐成矿影响具有重要意义。文章以柴达木盆地马海矿区发育的厚层芒硝的地层剖面为研究对象,通过系统取样开展薄片鉴定、化学组分、矿物类型和硫同位素分析,研究了剖面化学组分、矿物类型和硫同位素的变化规律。结果显示,该剖面的盐类矿物主要有石盐、石膏、芒硝及钙芒硝;芒硝层沉积的最大年龄为275.3±47.9 ka BP;剖面自下而上表现为由厚层纯净芒硝向含石膏石盐岩演变的特征,下部为芒硝层,中下部出现钙芒硝,中上部石盐含量最高,上部石盐含量相对减少,石膏含量增加,与之相对应的是沉积物化学组成中钾、镁和钙的含量稳定增高,硫酸根和钠含量总体降低。厚层芒硝沉积时期,马海盐湖处于持续干冷的气候条件,有利于盐湖卤水中钾、镁持续富集,为在局部富集形成固体钾矿奠定了基础。
Abstract	A thick layer of mirabilite was deposited in the lower part of the potassium-bearing strata of the Mahai Salt Lake in the Qaidam Basin. Unlike potassium salts, which usually formed in dry and hot climate, mirabilite is mostly formed under extremely cold conditions. Therefore, the study of the sedimentary characteristics and genesis of thick-layer mirabilite is of great significance for understanding the evolution of ancient environments and their impact on potassium salt mineralization. The article takes the stratigraphic profile of thick-layer mirabilite developed in the Mahai mining area of the Qaidam Basin as the research object, through systematic sampling, thin section identification, chemical composition, mineral type, and sulfur isotope analysis were carried out to study the changes in the chemical composition, mineral type, and sulfur isotope of the profile. The results show that the salt minerals in this section are main stone salt, gypsum, mirabilite, and glauberite, the maximum deposition age of the mirabilite layer is 275.3 ±47.9 ka BP, the research section shows the characteristic of evolution from thick-layer pure mirabilite to gypsum-bearing stone salt from bottom to top. The lower part is mirabilite layer, and glauberite appears in the middle and lower parts. The highest content of stone salt is in the middle and upper parts, while the content of stone salt in the upper part relatively decreases and the content of gypsum increases. Correspondingly, the content of potassium, magnesium, and calcium in the chemical composition of sediments steadily increases, while the overall content of sulfate ions and sodium decreases. During the period of thick-layer mirabilite deposition, Mahai Salt Lake was in a continuously dry and cold climate, which was beneficial to the continuous enrichment and increase of potassium and magnesium in the brine of the salt lake, which laid a foundation for the formation of solid potassium ore through local enrichment.
关键词	厚层芒硝；沉积特征；成因分析；马海盐湖；柴达木盆地
KeyWord	thick-layer mirabilite; sedimentary characters; cause analysis; Mahai Salt Lake; Qaidam Basin
基金项目
页码	311-324

参考文献
相关文献

Chen Andong, Gu Jiani, Wang Xuefeng, et al. 2022. Rethinking on correlation scheme between Late Quaternary evaporite-deposition period and glacial period in saline lakes of Qaidam Basin
[J]. Mineral Deposits, 41(2): 426~439(in Chinese with English abstract). Chen Andong and Zheng Mianping. 2017. Salt-forming periods in the Qaidam Basin and their correlation with Quaternary glaciations and tectonic movements on the Tibetan Plateau
[J]. Science & Technology Review, 35(6): 36~41(in Chinese with English abstract). Chen Andong, Zheng Mianping, Song Gao, et al. 2020. Evaporite deposits in the Qaidam Basin and their response to Quaternary glacial climates since marine oxygen isotope stage 6 (MIS6)
[J]. Geological Review, 66(3): 611~624(in Chinese with English abstract). Cui Qinggang and Zhao Shufang. 2018. The characteristics and geological significance of ring-shaped salt crust in Mahai salt lake of Qaidam basin in Qinghai Province
[J]. Geology of Chemical Minerals, 40(4): 218~226(in Chinese with English abstract). Fan Qishun, Ma Haizhou, Tan Hongbing, et al. 2009. Geochemistry characteristics of sulfur isotope in oilfield brine of the western Qaidam basin
[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 28(2): 137~142 (in Chinese with English abstract). Huang Q, Teh-Lung K and Phillips F M. 1993. Evolutionary characteristics of lakes and Palaeoclimatic undulation in the Qaidam Basin, China
[J]. Chinese Journal of Oceanology and Limnology, 11(1): 34~45. Liu Chenglin, Jiao Pengcheng, Chen Yongzhi, et al. 2008. Late Pleistocene mirabilite deposition in the lop nur saline lake, Xinjiang, and its paleoclimate implications
[J]. Acta Geoscientica Sinica, 29(4): 397~404. (in Chinese with English abstract). Liu Chenglin, Jiao Pengcheng, Sun Xiaohong, et al. 2018. Research on potash forming and exploration progress in potash deposits in the lop nur salt lake
[J]. Acta Geologica Sinica, 92(8): 1 551~1 570(in Chinese with English abstract). Liu Fang, Tian Jingxiong, He Wei, et al. 2023. Epigenetic reforming mineralization of the Guyuan rock salt deposit in Ningxia: Evidence from mineralogy
[J]. Geology and Exploration, 59(1): 27~42. (in Chinese with English abstract). Ren Jing. 2013. The mirabilite deposits in China: A review
[J]. Sedimentary Geology and Tethyan Geology, 33(1): 109~112(in Chinese with English abstract). Shi Z S, Chen K Y and He S. 2005. Strontium, sulfur and oxygen isotopic compositions and significance of paleoenvironment of Paleogene of Dongpu depression
[J]. Earth Science-Journal of China University of Geosciences, 30(4): 430~436. Tabakh M E, Schreiber B C, Utha-Aroon C, et al. 1998. Diagenetic origin of basal anhydrite in the Cretaceous Maha Sarakham salt: Khorat Plateau, NE Thailand
[J]. Sedimentology, 45(3): 579~594. Tabakh M E, Utha-Aroon C and Schreiber B C. 1999. Sedimentology of the Cretaceous Maha Sarakham evaporites in the Khorat Plateau of northeastern Thailand
[J]. Sedimentary Geology, 123(1~2): 31~62. Wang Zhaoxu, Zhao Yanjun, Zhao Xianfu, et al. 2022. Influence of sedimentary characteristics on water solution mining of low-grade potassium ore: A case study of Holocene in the northern ore section of Mahai Salt Lake, Qaidam Basin
[J]. Acta Petrologica et Mineralogica, 41(5): 929~940. (in Chinese with English abstract). Wei Xinjun, Jiang Jixue and Wang Mili. 1992. Sedimentary characteristics of quaternary and evolution of saline lake of Mahai potash deposit
[J]. Management & Strategy of Qinghai Land & Resources, (1): 40~52(in Chinese with English abstract). Wei Xinjun, Shao Changduo, Wang Mili, et al. 1993. Material Constituents, depositional Features and Formation Conditions of Potassium-Rich Saltakes in Western Qaidam Basin
[M]. Beijing: Geological Publishing House, 1~197(in Chinese). Yan Kai, Liu Chenglin, Wang Jiuyi, et al. 2018. Sulfur isotopic characteristics of Eocene series in the yanjing-shenjindu sub-depression in the southern Jiangling depression and its implication for paleoclimate and provenance
[J]. Acta Geologica Sinica, 92(8): 1 647~1 660. (in Chinese with English abstract). Yao Fojun, Jiao Pengcheng, Zhao Yanjun, et al. 2021. Research of remote sensing recognition of concealed brine-controlling structures in dry salt lake area: A case study of Mahai salt lake
[J]. Acta Geologica Sinica, 95(7): 2 225~2 237(in Chinese with English abstract). Zhang Pengxi. 1987. Salt Lake in Qaidam Basin
[M]. Beijing: Science Press, 1~235(in Chinese) Zheng Mianping, Zhang Yongsheng, Liu Xifang, et al. 2016. Progress and prospects of salt lake research in China
[J]. Acta Geologica Sinica, 90(9): 2 123~2 166(in Chinese with English abstract). Zheng Mianping, Zhao Yuanyi and Liu Junying. 1998. Quaternary saline lake deposition and paleoclimate
[J]. Quaternary Sciences, 18(4): 297~307. (in Chinese with English abstract). 附中文参考文献陈安东, 顾佳妮, 王学锋, 等. 2022. 晚第四纪柴达木盆地盐湖成盐期与冰期对比方案的再认识
[J]. 矿床地质, 41(2): 426~439. 陈安东, 郑绵平. 2017. 柴达木盆地成盐期与青藏高原第四纪冰期及构造运动阶段的相关性
[J]. 科技导报, 35(6): 36~41. 陈安东, 郑绵平, 宋高, 等. 2020. 晚第四纪MIS6以来柴达木盆地成盐作用对冰期气候的响应
[J]. 地质论评, 66(3): 611~624. 崔庆岗, 赵淑芳. 2018. 柴达木盆地马海盐湖的盐壳特征及其地质意义
[J]. 化工矿产地质, 40(4): 218~226. 樊启顺, 马海州, 谭红兵, 等. 2009. 柴达木盆地西部油田卤水的硫同位素地球化学特征
[J]. 矿物岩石地球化学通报, 28(2): 137~142. 刘成林, 焦鹏程, 陈永志, 等. 2008. 罗布泊盐湖晚更新世末期芒硝岩沉积及其古气候意义
[J]. 地球学报, 29(4): 397~404. 刘成林, 焦鹏程, 孙小虹, 等. 2018. 罗布泊盐湖成钾规律研究与找矿进展
[J]. 地质学报, 92(8): 1 551~1 570. 刘芳, 田景雄, 何伟, 等. 2023. 宁夏固原凹陷岩盐矿床后生改造成矿作用——来自矿物学的证据
[J]. 地质与勘探, 59(1): 27~42. 任静. 2013. 中国芒硝类矿床研究现状
[J]. 沉积与特提斯地质, 33(1): 109~112. 王弭力,吴必豪,田白,等. 1992. 柴达木盆地马海盐矿床基本地质特征及形成条件浅析
[C]//矿床地质研究所.中国地质科学院矿床地质研究所文集(25).北京: 地质出版社, 86~98. 王朝旭, 赵艳军, 赵宪福, 等. 2022. 沉积特征对低品位钾矿水溶开采的影响——以柴达木盆地马海盐湖北部矿段全新统为例
[J]. 岩石矿物学杂志, 41(5): 929~940. 魏新俊, 姜继学, 王弭力. 1992. 马海钾矿第四纪沉积特征及盐湖演化
[J]. 青海地质, (1): 40~52. 魏新俊, 邵长铎,王弭力. 1993. 柴达木盆地西部富钾盐湖物质组分、沉积特征及形成条件研究
[M]. 北京: 地质出版社, 1~197. 颜开, 刘成林, 王九一, 等. 2018. 江陵凹陷南缘盐井-申津渡凹地始新统硫同位素特征及古气候和物质来源探讨
[J]. 地质学报, 92(8): 1 647~1 660. 姚佛军, 焦鹏程, 赵艳军, 等. 2021. 干盐湖区隐伏控卤构造遥感识别研究——以马海盐湖为例
[J]. 地质学报, 95(7): 2 225~2 237. 张彭熹. 1987. 柴达木盆地盐湖
[M]. 北京: 科学出版社, 1~235. 郑绵平, 张永生, 刘喜方, 等. 2016. 中国盐湖科学技术研究的若干进展与展望
[J]. 地质学报, 90(9): 2 123~2 166. 郑绵平, 赵元艺, 刘俊英. 1998. 第四纪盐湖沉积与古气候
[J]. 第四纪研究, 18(4): 297~307.

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贺荟文，赵艳军，阮壮，王楠*，崔子豪，胡宇飞. 柴达木盆地马海盐湖厚层芒硝沉积特征及其成因 [J]. 岩石矿物学杂志. 2025; 44; (2). 311 - 324.

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