TSG files contain PLS-scalars applied to the Eucla Basement hyperspectral drill core data

GSWA collected hyperspectral reflectance spectra from drill holes intersecting the Eucla Basement (FOR004, FOR010, FOR011, MAD002, MAD014, HDDH001) using a HyLogger3 located at GSWA’s drill core library in Carlisle, WA. A PLS-based approach was used to model three geochemical indices, including the Magnesium number (“Mg#”; Mg/(Mg+Fe)), Silica Calcium Iron Magnesium number (“SCFM”; SiO2/(SiO2+CaO+FeOtot+MgO)), and Aluminium saturation index (“ASI”; Al2O3/(Na2O+K2O+CaO)) from the hyperspectral data. The accompanying CSIRO report EP184011 provides a detailed description of applied processing methods using The Spectral Geologist (TSG) software, including the feature extraction scripts (base and Multiple Feature Extraction Method (MFEM) scripts), and Partial Least Squares (PLS) modelling of geochemistry.

西澳大利亚地质调查局（Geological Survey of Western Australia，GSWA）在西澳大利亚州卡莱尔的GSWA岩心库内，使用HyLogger3设备，对穿过尤克拉基底（Eucla Basement）的钻孔（含FOR004、FOR010、FOR011、MAD002、MAD014、HDDH001）采集了高光谱反射光谱。本研究采用基于偏最小二乘（Partial Least Squares，PLS）的建模方法，基于上述高光谱数据构建了三类地球化学指标的预测模型，包括镁值（"Mg#"; Mg/(Mg+Fe)）、硅钙铁镁比值（"SCFM"; SiO₂/(SiO₂+CaO+总铁以FeO计+MgO)）以及铝饱和指数（"ASI"; Al₂O₃/(Na₂O+K₂O+CaO)）。配套的澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation，CSIRO）报告EP184011详细介绍了使用光谱地质学家（The Spectral Geologist，TSG）软件的具体处理流程，包括特征提取脚本（基础脚本与多特征提取方法（Multiple Feature Extraction Method，MFEM）脚本）以及地球化学数据的偏最小二乘（PLS）建模流程。