Geosoft CET Grid Analysis Structural Complexity Map How-To Guide

About this manual

This guide explains how to use the CET Grid Analysis system in Oasismontaj to detect structural complexity in greenfield exploration data. It covers magnetic data pole‑reduction, lineament generation, ridge detection, and vectorization of results into short linear segments.

The document provides detailed instructions for each processing step, including parameter settings such as window size, filter wavelength, and threshold values, and shows how to produce a contact occurrence density map for prospecting purposes.

What's inside

• Pole Reduce Magnetic Grid Data
• Generate the Lineament
• Detect Ridges along Linear Features
• Vectorize the Digital Normalized Grid
• Vectorize Lineaments into Short Linear Segments
• Contact Occurrence Density
• Orientation Entropy

Specifications

Frequently asked questions

How do I reduce magnetic grid data before analysis?

Select MAGMAP → 1‑Step Filtering, specify the input magnetic grid and output pole‑reduced grid, set the geomagnetic parameters, and click OK.

What window size should I use for the Standard Deviation calculation?

The default window size of 5 grid cells is recommended, but you can increase it if your structural features are not adequately covered.