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| 黄旗海湖泊沉积物醋酸淋溶液的元素组成及其环境意义 |
| Elemental Composition of Leaching Fluid of Sediments in Huangqihai Lake and Its Environmental Implication |
| 投稿时间：2012-04-25 修订日期：2012-07-26 |
| DOI： |
| 中文关键词: 湖泊沉积;醋酸淋溶;元素;环境变化;早中全新世 |
| 英文关键词: lake deposit;HAc leaching;element;climate change;Early and Middle Holocene |
| 基金项目:国家自然科学基金项目(批准号:41262007)。 |
| 作者 | 单位 | | 徐敏1, 贾玉连1, 徐佳佳1, 陈逸珺2, 张静然3, 张智1, 于玲玲1 | 1. 江西师范大学地理与环境学院, 南昌 330026
2. 南京大学现代分析中心, 南京 210093
3. 中国科学院青海省盐湖研究所, 盐湖地球化学重点实验室, 西宁 810008 |
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| 中文摘要: |
| 黄旗海HJC剖面是氧同位素三阶段晚期(MIS3a)与现代间冰期的堆积,包括深湖相、浅湖相、冲洪积相与风成沉积。为研究各沉积相湖泊碳酸盐沉积中元素地球化学特点,对沉积物用醋酸溶液进行了选择性化学淋溶,并分析了淋溶液的元素组成。结果显示:淋溶实验较好地揭示了各沉积相的环境特点,对早、中全新世环境变化有敏感的响应;湖泊自生碳酸盐过程存在自身的元素组合特点,但在一定程度上也继承了外源组分的特点。 |
| 英文摘要: |
| The HJC profile in the Huangqihai Lake is the result of stacking dating from marine oxygen-isotope stage 3 (MIS3a) to modern interglacial period. The deposition types include deep lacustrine facies, shallow lacustrine facies, diluvial facies and eolian facies. To investigate element geochemical characteristics and climatic implications in lacustrine carbonate deposits, acetic acid (HAc) leaching experiments were carried out on lacustrine deposit samples, and the elemental composition of leaching fluid was also analyzed. The leaching experiment revealed the environmental characteristics of all its periods and had sensitive respondency to the humid climate in Early Holocene. In the Huangqihai Lake, the spontaneous carbonate has its own element characteristics, while it also has inherited exogenous component characteristics to some extent. |
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