Geological modelling from field data and geological knowledge Part II. Modelling validation using gravity and magnetic data inversion
Geological modelling from field data and geological knowledge Part II. Modelling validation using gravity and magnetic data inversion
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DOI：
10.1016/j.pepi.2008.06.014
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发表时间：
2008-12-01
影响因子：
2.3
通讯作者：
Ledru, P.
中科院分区：
文献类型：
--
作者：
Guillen, A.;Calcagno, Ph.;Ledru, P.
需要对多个数据集进行分析，以便在无限数量的可能性中选择一个逼真的3D地质模型。提出了一种描述地质体三维几何形状的反演方法。该方法考虑到地质和岩石的物理性质，同时尊重先验模型的拓扑性质。先验模型是根据地质数据集建立的，其几何形状在很大程度上取决于关于深度处不可接近的地质的假设。该方法被称为“全岩性反演”，是一种广义3D反演，其以概率方式量化岩性和岩石性质的分布。通过一个简单的综合实例和一个造山域中花岗岩和闪长岩的相对分布特征来说明它的应用。(C)2008 Elsevier B.V.保留所有权利。
The analysis of multiple data sets is required to select a realistic 3D geological model among an infinite number of possibilities. An inverse method that aims at describing the 3D geometry of geological objects is presented. The method takes into account the geology and the physical properties of rocks, while respecting the topological properties of an a priori model. The a priori model is built from the geological data set and its geometry is largely dependent upon assumptions about inaccessible geology at depth. This method, referred to as "total litho-inversion" is a generalised 3D inversion that results in quantifying the lithology and the distribution of rock property in a probabilistic way. Its application is demonstrated through (i) a simple synthetic case and (ii) the relative distribution characterization of granites and diorites in an orogenic domain. (C) 2008 Elsevier B.V. All rights reserved.