The Magnetosusceptibility Event and Cyclostratigraphy (MESC) Method Applied to the Problem of Intra-and Intersite Correlations and Pleistocene/Holocene Paleoclimate for S. Europe

磁化率事件和旋回地层学（MESC）方法应用于解决南欧场内和场间相关性以及更新世/全新世古气候问题

• 批准号: 9903172
• 负责人: Brooks Ellwood
• 金额: $ 9.27万
• 依托单位: University of Texas at Arlington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-15 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9903172&HistoricalAwards=false
• 关键词: Magnetosusceptibility; Event; Cyclostratigraphy; MESC; Method

With National Science Foundation support Drs. Brooks Ellwood and Francis Harrold will apply the technique of magnetosusceptibility (MS) correlation to a series of archaeological sites in Southern Europe. This technique, which is still in the process of development, is based on the fact that climate affects the magnetic properties of sediments. In unconsolidated samples such as those excavated from archaeological sites MS works as a climatic proxy because temperature and moisture control the magnetic properties of deposited sediments, primarily as the result of pedogenesis. There is higher production of magnetic materials with corresponding increases in MS during periods when climate is relatively warm and wet. Given this fact, one can sample stratigraphic archaeological sections and construct magnetic curves which, when constrained by paleontological and oxygen isotope stage data, can be cross correlated. On this basis the investigators hope to establish a composite reference curve which will then permit fitting of smaller sequences from individual sites.In collaboration with the relevant archaeologists, Drs. Ellwood and Harrold will visit a number of Middle and Upper Paleolithic sites in Spain, Portugal and France to collect and analyze sediment samples. The resultant curves should prove useful for dating over a large portion of Western and Southern Europe and will, hopefully, cover ca. 200,000 years. This is a particularly important period because it witnessed the replacement of Neanderthals by anatomically modern humans and the emergence of societies with cultural capabilities equal to our own. This research is also important because it will help to refine a tool potentially useful in many archaeological settings.

在国家科学基金会的支持下。布鲁克斯·埃尔伍德 (Brooks Ellwood) 和弗朗西斯·哈罗德 (Francis Harrold) 将把磁化率 (MS) 关联技术应用于南欧的一系列考古遗址。这项技术仍在开发过程中，其基础是气候影响沉积物的磁性。在未固结的样品中，例如从考古遗址挖掘出的样品，MS 可以作为气候指标，因为温度和湿度控制着沉积物的磁性，这主要是成土作用的结果。当气候相对温暖和潮湿时，磁性材料的产量会增加，MS 也会相应增加。鉴于这一事实，人们可以对地层考古剖面进行采样并构建磁曲线，当受到古生物学和氧同位素阶段数据的约束时，磁曲线可以相互关联。在此基础上，研究人员希望建立一条复合参考曲线，从而可以拟合各个地点的较小序列。埃尔伍德和哈罗德将访问西班牙、葡萄牙和法国的一些中、晚期旧石器时代遗址，收集和分析沉积物样本。由此产生的曲线应该对西欧和南欧大部分地区的测年很有用，并且有望覆盖约。 20万年。这是一个特别重要的时期，因为它见证了尼安德特人被解剖学上的现代人类取代，以及具有与我们同等文化能力的社会的出现。这项研究也很重要，因为它将有助于完善在许多考古环境中可能有用的工具。