Use this program to read an existing lithology solid model (an .RwMod file) and determine the uppermost and lowermost elevations for a selected lithology type in each vertical column of nodes in the input model. The thickness of this interval - regardless of materials that lie between - will be stored for the corresponding node in the output grid model (.RwGrd file). A "null" value (-1.0e27) is assigned to any grid nodes that do not have a corresponding lithology within the original lithology block model. The resulting isopach will be displayed as surfaces with side panels in 3D.
! This program requires that you've already created a lithology model (.RwMod file).
! This program does not take into consideration any material types that lie between the uppermost and lowermost occurrences of the selected lithotype.
See also
Creating an Upper Surface Model, a Lower Surface Model, or a 3D Isopach for a Selected Lithotype
Feature Level: RockWorks Standard and higher
Menu Options
Step-by-Step Summary
Follow these steps to create grid models and 3D diagram that represents the total thickness of a selected lithology type in an existing lithology model.
The program will determine the uppermost elevation for the requested material in each vertical column of nodes in the input lithology model. That elevation will be stored in the corresponding node in the Upper Surface Output Grid. The program will then determine the lowermost elevation for the requested material in each vertical column of nodes in the input lithology model. That elevation will be stored in the corresponding node in the Lower Surface Output Grid. Any locations for which there are no occurrences of the selected material, a null value will be assigned in the output grids.
The program will create the 3-dimensional image representing the grid models, appending side panels to connect the surfaces where possible. The requested diagram will be displayed in a RockPlot3D tab in the Options window.
! Note: The grid models that are generated, and the diagram which represents it, are based on all voxels from the uppermost occurrence of the designated lithology to the lowermost occurrence. This means that other lithologies may exist between these two surfaces.
Back to Lithology Menu Summary