Application of Laser Ablation Multi Collector Inductively Coupled Plasma Mass Spectrometry (LA MC ICPMS) for 230Th/U-dating of speleothems and paleoclimate reconstruction

激光烧蚀多接收器电感耦合等离子体质谱 (LA MC ICPMS) 在洞穴生物 230Th/U 定年和古气候重建中的应用

• 批准号: 75875953
• 负责人: Professor Dr. Denis Scholz
• 金额: --
• 依托单位: Arbeitsgruppe Speläothemforschung
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/75875953?language=en
• 关键词: Application; Laser; Ablation; Multi; Collector

I apply to spend one year at the Bristol Research Initiative for a Dynamic Global Environment (BRIDGE) at Bristol University, United Kingdom, to become acquainted with cutting-edge Laser Ablation Multi Collector Inductively Coupled Plasma Mass Spectrometry (LA MC ICPMS) techniques, which are not available at my current position in Heidelberg. I want to apply these methods to stalagmite HBSH-1 from Hüttenbläserschachthöhle (Sauerland, western Germany), which grew during several warm phases within the last 250,000 years as revealed by preliminary Thermal Ionization Mass spectrometry (TIMS) 230Th/U-dating. Application of LA MC ICPMS 230Th/U-dating allows obtaining the highest dating accuracy and spatial age resolution. In addition, high-resolution trace element profiles will be measured on HBSH-1 by LA ICPMS. When I return to Germany, I would like to establish these methods there. Stalagmite HBSH-1 will be interpreted in terms of past climate variability, and the interpretation will be supported by the results of the DFG research group DAPHNE, which works with stalagmites from the nearby Bunkerhöhle. Furthermore, I want to develop a general algorithm to construct stalagmite age models. This algorithm will be tested using the high-resolution age information on HBSH-1.

我申请在英国布里斯托尔大学（Bristol University）的Bristol Research Inipative花费一年的时间，该计划被英国布里斯托尔大学（Bridge）的动态全球环境（Bridge）呆了，以尖端的激光消融多收集器电感性等离子质谱法（LA MC MC ICPMS）技术获得，这在我目前在Heidelelberg中无法获得。我想将这些方法应用于HüttenBläserschachthöhle（德国Sauerland，西部）的Stalagmite HBSH-1，这些方法在过去250，000年内在几个温暖的阶段中生长，如初步热电离质谱法（TIMS）230/U约会所揭示。 La Mc ICPMS 230/U年期的应用允许获得最高的日期准确性和空间年龄分辨率。此外，将通过LA ICPMS在HBSH-1上测量高分辨率痕量元素。当我返回德国时，我想在那里建立这些方法。 Stalagmite HBSH-1将以过去的气候变异性来解释，DFG研究小组达芙妮的结果将支持该解释，该小组与附近Bunkerhöhle的Stalagmites合作。此外，我想开发一种一般算法来构建Stalagmites年龄模型。该算法将使用HBSH-1上的高分辨率年龄信息进行测试。