| 库车盆地早始新世成盐期卤水温度及其意义 |
| |
| 引用本文： | 徐洋,曹养同,刘成林.库车盆地早始新世成盐期卤水温度及其意义[J].地球科学,2021,46(11):4188-4196. |
| |
| 作者姓名： | 徐洋 曹养同 刘成林 |
| |
| 作者单位： | 1.东华理工大学核资源与环境国家重点实验室, 江西南昌 330013 |
| |
| 基金项目： | 中国地质科学院基本科研业务费项目YYWF201716国家自然科学基金项目41902064国家自然科学基金项目41902065国家自然科学基金项目41602100中央公益性基本科研业务费项目KK2016东华理工大学博士科研启动基金项目DHBK2018029 |
| |
| 摘 要： | 古气候和古卤水温度条件与盐湖成钾有着密切的联系，定量化重建库车盆地早始新世成盐期古卤水温度演化特征对评价盆地成钾潜力具有重要的科学意义.因此，首次以库车盆地西部QL1井下始新统石盐岩为研究对象，在详细的岩相学研究的基础上，开展石盐原生流体包裹体均一温度的定量分析工作.分析结果显示，来自钻孔不同深度的6个样品共有135个均一温度数据，介于21.2~57.8℃，平均值为31.8℃，剖面垂向上自底向顶整体上呈现一个稍微升温的趋势.本研究测定的温度范围、平均温度以及最高温度特征均与同时期特提斯海水温度数据吻合，进一步说明温度数据的可靠性和合理性.另外，高温条件有利于水体发生强烈的蒸发浓缩作用，这点与库车盆地始新世初期沉积的巨厚蒸发岩系和钾盐矿物相符.
|
| 关 键 词： | 卤水温度 石盐流体包裹体 早始新世 库车盆地 特提斯域 环境地质 |
| 收稿时间： | 2021-02-07 |
Brine Temperature of Early Eocene Salt Formation Period in Kuqa Basin and Its Significance |
| |
| Xu Yang,Cao Yangtong,Liu Chenglin.Brine Temperature of Early Eocene Salt Formation Period in Kuqa Basin and Its Significance[J].Earth Science-Journal of China University of Geosciences,2021,46(11):4188-4196. |
| |
| Authors: | Xu Yang Cao Yangtong Liu Chenglin |
| |
| Abstract: | Paleoclimate and paleobrine temperature conditions are closely related to potassium formation in salt lakes. Quantitatively reconstructing evolution characteristics of paleobrine temperature during Early Eocene salt-forming period of the Kuqa basin has important scientific significance for evaluating the potash potential of the basin. In this paper it takes Lower Eocene rock salt of core QL1 which is located in the western Kuqa basin as research object for the first time. Based on the detailed petrographic research, the test and analysis of homogenization temperature of primary fluid inclusions of halite were carried out. The analysis results show that a total of 135 homogenization temperature data were obtained from six samples with different depths of the borehole, ranging from 21.2 to 57.8℃, with an average value of 31.8℃, the profile shows a slight warming trend from bottom to top in the vertical direction. The characteristics of homogenization temperature range, average homogenization temperature, and maximum homogenization temperature measured in this paper are consistent with the temperature data of the Tethys seawater in the same period, which further indicates reliability and rationality of homogenization temperature data. In addition, the high temperature condition is conducive to strong evaporation and concentration of water bodies, which is in good agreement with the thick evaporite series and potassium minerals deposited in the Early Eocene of the Kuqa basin. |
| |
| Keywords: | |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
