Relating physical properties from geophysical downhole logging data with clay mineralogy from drill core samples of the ICDP Lake Junín drilling project, Peru

该项目的目的是利用井下测井数据和ICDP Junín湖钻井项目的岩心样品，调查和比较Junin湖沉积物的物性和矿物学特征，以更好地了解气候变化对沉积速率的影响。更详细地说，我们的目标是改进井下测井数据作为一种工具的使用，以确定(I)Junín湖沉积物的物理性质，(Ii)基于旋回地层学特征的年龄深度关系，以及(Iii)用于与岩心样品比较的矿物学和地球化学特征。为了实现这些目标，我们将使用聚类分析来识别湖相沉积物中的地球物理性质，使用GFZ开发的专用算法，井下测井数据的光谱分析来研究古气候意义，以及岩心样品中粘土矿物的矿物学和地球化学分析，以将它们与测井数据中观察到的小尺度和大尺度矿物趋势进行比较。这些信息将用于调查朱尼恩湖的地质历史及其与气候变化的关系。我们还打算加强现场钻孔测量的价值，作为对标准科学研究人员的关键和补充研究，在这一课题中给予突出的科学研究。

The goal of this project is to investigate and compare the physical properties and mineralogy of the lithological units of Lake Junin sediments by downhole logging data and core samples from the ICDP Lake Junín drilling project, in order to better understand the influence of climate changes to sedimentation rates. In more detail, our aim is to improve the use of downhole logging data as a tool to determine (i) the physical properties of Lake Junín sediments, (ii) the age depth relationship based on cyclostratigraphic characteristics, and (iii) mineralogical and geochemical characteristics for comparisons with core samples.To achieve these goals, we will use cluster analysis to identify the geophysical properties in the lacustrine sediments with a dedicated algorithm developed at GFZ, spectral analysis of downhole logging data to investigate paleoclimatic implications, and mineralogical and geochemical analyses of clay minerals in core samples, to compare them with small and large scale mineralogical trends observed in logging data. This information will be used to investigate the geological history of the Lake Junín and the relationship with climate changes. We also intend to strengthen the value of the in situ borehole measurements as a key and complementary research to the standard scientific researchers in this topic giving a prominent scientific research.