GOCAD® Mining Suite

Potential Fields Module
Earth modelling and 3D-GIS solutions for mineral exploration
Summary
The GOCAD Mining Suite Potential Fields Module gets more for its
users out of their inversion work by providing them with rigorously
quantitative interpretation of potential fields data within a 3D earthmodelling context. Modelling and inversion workflows for gravity andmagnetic data use geological models, structural and petrophysicalconstraints, as well as traditional filtering and interpretation tools,
within an exceptional 3D visualization environment. The module
works seamlessly with VP Suite’s and UBC-GIF's MAG3D and GRAV3D
codes.
GOCAD Mining Suite Potential Fields Module is an extension ofParadigm™ GOCAD, the world's most sophisticated geologicalmodelling platform, adapted specifically for the mining industry withmining modules available exclusively from Mira Geoscience.

» Provides greater interpretational value byestablishing, under full user control, theconstraints implicit in 3D earth models» Defines physical rock property distributions,drillhole data and 3D structural models as
constraints for the inversion process» Communicates the geological and petrophysical models as well as drilling
constraints to inversions» Integrates GOCAD 3D earth models andindustry leading inversion platforms» Ensures results are interpreted consistently
with other information through advanced
3D visualization of multi-disciplinary data
» Enables import and export of data from andto a wide range of Geosoft, VPmg andUBC-GIF file formats» Includes industry-standard potential fields
data gridding, filtering and depth-to-source
estimation tools» Supports GRAV3D and MAG3D forward
modelling and inversion using the Potential
Fields UBC workflow

New workflow:» Provides the user an efficient interface for validating and updating 3D
geological models through forward
modelling and inversion* GOCAD® is a registered trademark of Paradigm™

A unique module that makes use of
all the geological constraint options
offered by advanced inversion tools© 2000 TeckCominco. All rights reservedKey Features
1D (along line) filtering» Low-pass and high-pass» Vertical derivatives» Upward and downward continuation

2D (grid) filtering» Low-pass and high-pass» Reduction to pole
» Vertical and horizontal derivatives» Upward and downward continuation» Depth-to-source estimation

Gravity data conversions» Convert Bouguer to Free Air» Convert Free Air to Bouguer

Potential fields UBC workflow» Connects with UBC-GIF MAG3D
and GRAV3D» Data pre-processing (gridding andfiltering) and preparation» Volume discretization» Model design (padding)» Automatic export of models and data
to inversion algorithms» Core model extraction» Predicted data import and residualcomputation and data misfits» Interactive iso-surface generation» Automatic report generation

Workflow benefits
Trend removal» First, second and third order polynomial trend
removal on point and gridded data

Potential fields VPmg workflow» Streamlines use of VP Suite software» Guides the user through data and model
preparation for a variety of geologically based
and unconstrained inversion styles» Provides a variety of inversion options+ Optimise starting model (homogeneous)density/susceptibility+ Directly update geological model throughgeometry inversion.
+ Fully 3D (or apparent) density/susceptibility inversion+ Geobody inversion» Simplifies assignment of constraints,e.g. drillhole geological or petrophysicalconstraints, lithology based constraints(property bounds, active or inactive units)» Increased productivity» Internal quality and consistency checks» Ease of use» Sensible default settings for new users» Repeatability» Knowledge transfer» Simplifies file management» Audit trail via automatic workflow
report generation© 2004 Primary Industries and Regions SA. All rights reserved...Montreal Vancouver Brisbane Perthwww.MiraGeoscience.com@MiraGeoscience

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