Fortitude North dataset

The research hypothesis discussed in this paper is that an integration of drill hole geochemistry with petrophysics and geological observations can allow for the identification of geological processes and lithological units in a gold mineralizing system located in the Archean Yilgarn Craton of Western Australia.

The data presented in the paper includes whole-rock geochemical data, magnetic susceptibility, velocity, density and lithological logging gathered from drill hole samples. The data was gathered using various analytical techniques and was interpreted using cross plots and principal component analysis.

The data shows that the dominant host rocks in the Yilgarn Craton underwent in situ magmatic fractionation, with trends consistent with this process being observed in the geochemical data. Specifically, Ti, Fe, and P were found to have a positive correlation with Zr, while Mg had a negative correlation, indicating magmatic fractionation. Additionally, high Ti and P zones were interpreted as the upper parts of dolerite sills that fractionated in place during crystallization, which corresponded to zones of high magnetic susceptibility and dominated the magnetic response of the Fortitude North system.

Furthermore, multi-dimensional data analysis using principal component analysis indicated that the direction of the Au eigen vector corresponds with S, As, Sb, Cu, K, and Te, which are interpreted as pathfinder elements that can be used to delimit Au system targets. This suggests that hydrothermal processes related to Au mineralization are present in the Yilgarn Craton.

Notable findings from the data include the identification of magmatic processes, alteration, and lithological insights that can be incorporated into multi-scale data integration workflows to inform exploration programs targeting orogenic gold in Archean greenstone belts similar to the Yilgarn granite-greenstone terranes.

In summary, the data presented in this paper provides insights into the geological processes and lithological units present in a gold mineralizing system in the Yilgarn Craton of Western Australia, which can inform exploration programs targeting orogenic gold in similar geological settings.

本文所探讨的研究假设为：将钻孔地球化学与岩石物理学及地质观察相结合，能够在澳大利亚西部伊尔冈克拉通古老的含金矿化系统中识别出地质过程和岩性单元。文中呈现的数据包括全岩地球化学数据、磁化率、速度、密度和岩性测井数据，这些数据均来自钻孔样本，并通过多种分析技术收集，并利用交叉图和主成分分析进行解读。数据表明，伊尔冈克拉通的主要围岩经历了原地岩浆分异，这一过程在地球化学数据中呈现一致趋势。具体而言，Ti、Fe和P与Zr呈正相关，而Mg呈负相关，表明岩浆分异。此外，高Ti和P区域被解释为在结晶过程中原地分异的辉长岩岩床的上部，这些区域具有高磁化率，并主导了Fortitude North系统的磁性响应。进一步地，通过主成分分析进行的多维数据分析表明，Au特征向量的方向与S、As、Sb、Cu、K和Te相对应，这些元素被解释为示踪元素，可用于界定Au系统目标。这表明与Au矿化相关的热水过程存在于伊尔冈克拉通。数据中的显著发现包括识别出岩浆过程、蚀变以及岩性洞察，这些发现可以融入多尺度数据集成工作流程中，为针对类似伊尔冈花岗岩-绿岩地块的造山型金进行勘探的项目提供信息。总之，本文呈现的数据揭示了澳大利亚西部伊尔冈克拉通含金矿化系统中存在的地质过程和岩性单元，这些信息能够为针对类似地质环境的造山型金勘探项目提供指导。