Reclus Tectonics Databases: East Africa@en

Any geological exploration of the Earth ultimately requires understanding its structure and crustal geometry and composition - its architecture - whether we are searching for battery minerals, metals, water, hydrocarbons, carbon storage reservoirs, or geothermal. Although regional and local databases are available, especially in the commercial world, there is no systematic, global suite of databases for crustal architecture and structure accessible by the entire scientific community. This is why we have built Reclus. The Reclus suite includes databases of the following: (1) structural elements, which define the three-dimensional geometry of the rock volume, including folds and faults; (2) 'crustal' facies describing the geometry and composition/rheology of the lithosphere; (3) igneous features; and (4) geodynamics, representing the dominant thermo-mechanical processes acting on the lithosphere. The datasets provided here are for East Africa and are described in detail in Markwick et al., (Accepted for publication). Interpretations were made between 2017-2021 using a range of primary and secondary sources. These input datasets include gravity and magnetic data, Landsat imagery, radar data, published well and seismic information, geological maps and published papers, MSc and Ph.d. theses, and reports. The databases are compiled and managed using ESRI's ArcGIS software and are underpinned by a comprehensive data management system and systematic attribution. In this resource, the databases are provided as ESRI shapefiles. Shapefiles are the ESRI data format that can be used most widely, including the following: different versions of ArcGIS; QGIS, Schlumberger's Petrel; and Google Earth. Reclus enables commercial explorationists to place their internal data and expertise within a systematically built, regional context. For students and academics, Reclus is designed to provide a starting point for further research - it is so much easier to take an existing resource, question it, disagree with it, change it, and improve it. Reclus is named after the French geographer Jacques Élisée Reclus”, who in the late 19th century compiled and analyzed physical and human geographic data for every continent. This was published in his 19 volume work, La Nouvelle Géographie Universelle, la Terre et Les Hommes, which included some of the first maps illustrating the global distribution of volcanoes and mountains.任何地球地质勘探工作，最终都需要厘清地球的构造、地壳几何形态与组成——即其地壳架构——无论我们的勘探目标是电池矿物、金属矿产、水资源、碳氢化合物、碳储存储层还是地热资源。尽管目前已有部分区域及地方级数据库，尤其在商业领域，但尚无一套可供全球科学界统一访问的系统性全球地壳架构与构造数据库。这正是我们开发Reclus数据集的初衷。 Reclus数据集套件包含以下四类数据库：(1) 构造要素数据库：用于刻画岩体的三维几何形态，涵盖褶皱与断层；(2) 地壳相（crustal facies）数据库：描述岩石圈（lithosphere）的几何形态、组成与流变学（rheology）特征；(3) 火成构造（igneous features）数据库；(4) 地球动力学（geodynamics）数据库：表征作用于岩石圈的主要热力-力学过程（thermo-mechanical processes）。 本次提供的数据集针对东非地区，详细内容见Markwick等人已录用待刊的研究论文。该数据集的解译工作于2017至2021年间完成，依托多类一手与二手数据源。本次使用的输入数据集包括重力与磁法数据、Landsat遥感影像、雷达数据、已公开的钻井与地震资料、地质图件、已发表论文、硕士与博士学位论文及各类研究报告。 本数据集依托完备的数据管理体系与系统性属性标注，使用ESRI公司的ArcGIS软件进行编译与管理。本资源中的数据库以ESRI Shapefile格式提供。Shapefile是ESRI推出的通用数据格式，可兼容多款主流软件，包括：各版本ArcGIS、QGIS、斯伦贝谢（Schlumberger）的Petrel以及Google Earth。 Reclus可帮助商业勘探人员将自有内部数据与专业经验置于系统性构建的区域地质框架之中。对于学生与科研学者而言，Reclus可作为后续研究的起点：依托现有数据集开展质疑、修正、改进等工作，将更为便捷高效。 Reclus数据集得名于法国地理学家雅克·埃利泽·雷克吕（Jacques Élisée Reclus）。19世纪末，雷克吕曾对全球各大陆的自然与人文地理数据进行汇编与分析，其成果以19卷本巨著《新全球地理：地球与人类》（La Nouvelle Géographie Universelle, la Terre et Les Hommes）出版，书中收录了首批展示全球火山与山脉分布的地图之一。