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

将地球物理井下测井数据的物理特性与秘鲁 ICDP 胡宁湖钻探项目钻芯样本的粘土矿物学联系起来

基本信息

批准号：
339093449
负责人：
Dr. Simona Pierdominici
金额：
--
依托单位：
Sektion 4.2: Geomechanik und Wissenschaftliches Bohren
依托单位国家：
德国
项目类别：
Infrastructure Priority Programmes
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/339093449?language=en
关键词：
Relating physical properties geophysical downhole

项目摘要

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.

本项目的目标是通过井下测井数据和ICDP胡宁湖钻探项目的岩心样品，调查和比较朱宁湖沉积物岩性单元的物理性质和矿物学，以便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的使用，将其作为一种工具来确定（i）胡宁湖沉积物的物理性质，（ii）基于旋回地层特征的年龄-深度关系，以及（iii）与岩心样品进行比较的矿物学和地球化学特征。我们将使用GFZ开发的专用算法，使用聚类分析来识别湖相沉积物的地球物理特性，使用井下测井数据的频谱分析来研究古气候含义，岩心样品中粘土矿物的矿物学和地球化学分析，将其与测井数据中观察到的小尺度和大尺度矿物学趋势进行比较。这些信息将用于调查胡宁湖的地质历史以及与气候变化的关系。我们还打算加强原位钻孔测量的价值，作为标准科学研究人员在这一主题中进行突出科学研究的关键和补充研究。