3-D geological and petrophysical models with synthetic geophysics based on data from the Hamersley region (Western Australia)

3-D geological and petrophysical models with synthetic geophysics based on data from the Hamersley region (Western Australia)

M. Jessell 1,2, J. Giraud 1,2, M. Lindsay 1,2                                                     

1 Centre for Exploration Targeting (School of Earth Sciences), University of Western Australia, 35 Stirling Highway, 6009 Crawley, Australia

2 Mineral Exploration Cooperative Research Centre, School of Earth Sciences, University of Western Australia, 35 Stirling Highway, WA Crawley 6009, Australia

Contact author: Jeremie Giraud ([e-mail])

Companion dataset to the paper:

Structural, petrophysical and geological constraints in potential field inversion using the Tomofast-x open-source code, J. Giraud, V. Ogarko, R. Martin, M. Lindsay, M. Jessell, Geoscientific Model Development Discussions.

This dataset contains models and data shown in the paper, in both 2D and 3D:

1. Geological model

Reference lithology voxet:

The reference geological model was obtained using public data from the Geological Survey of Western Australia and modified subsequently (stretched vertically and flattened at surface level) for the purpose of this study.

Probability voxet
The lithology probability voxet was derived using Monte Carlo simulations for uncertainty estimation as mentioned in the paper.

2. True and inverted models for density and magnetic susceptibility

Derivation is detailed in the paper; it uses fictitious density and magnetic susceptibility values.

3. Bouguer and total magnetic field anomaly

Calculation is detailed in the paper.

The authors are supported, in part, by Loop – Enabling Stochastic 3D Geological Modelling (LP170100985) and the Mineral Exploration Cooperative Research Centre (MinEx CRC) whose activities are funded by the Australian Government's Cooperative Research Centre Program. This is MinEx CRC Document 2021/3. Mark Lindsay acknowledges funding from the ARC and DECRA DE190100431.

It is a companion dataset to: 
Vitaliy Ogarko, Jeremie Giraud, & Roland. (2021, February 5). Tomofast-x v1.0 source code (Version 1.0). Zenodo. http://doi.org/10.5281/zenodo.4452620

基于西澳大利亚州哈默斯利（Hamersley）地区数据构建的合成地球物理三维地质与岩石物理模型

M. Jessell 1,2, J. Giraud 1,2, M. Lindsay 1,2

1 勘探目标中心（地球科学学院），西澳大利亚大学，澳大利亚克劳利市斯特林高速公路35号，邮编6009
2 矿产勘探合作研究中心（地球科学学院），西澳大利亚大学，澳大利亚西澳大利亚州克劳利市斯特林高速公路35号，邮编6009

通讯作者：杰雷米·吉罗（Jeremie Giraud），电子邮箱：[e-mail]

本数据集为以下论文的配套数据：
《使用Tomofast-x开源代码进行位场反演的构造、岩石物理与地质约束》，作者J. Giraud, V. Ogarko, R. Martin, M. Lindsay, M. Jessell，发表于《Geoscientific Model Development Discussions》

本数据集包含论文中展示的二维与三维模型及数据，具体如下：
1. 地质模型
参考岩性体素（voxet）：本参考地质模型基于西澳大利亚地质调查局公开数据构建，并针对本研究需求进行了后续修改（垂直拉伸且在地表层面进行扁平化处理）。
概率体素：如论文所述，岩性概率体素通过蒙特卡洛（Monte Carlo）模拟开展不确定性估计并推导得到。
2. 密度与磁化率的真实模型与反演模型：推导过程详见论文，模型采用虚构的密度与磁化率数值。
3. 布格重力异常与总磁场异常：计算过程详见论文。

本研究部分受Loop——赋能随机三维地质建模项目（LP170100985）以及矿产勘探合作研究中心（MinEx CRC）资助，该中心的活动由澳大利亚政府合作研究中心项目资助。本文件为MinEx CRC 2021/3号文档。马克·林赛（Mark Lindsay）受澳大利亚研究理事会（ARC）及DECRA DE190100431项目资助。

本数据集同时为以下资源的配套数据：
Vitaliy Ogarko, Jeremie Giraud, & Roland. (2021年2月5日). Tomofast-x v1.0 源代码（版本1.0）. Zenodo. http://doi.org/10.5281/zenodo.4452620