Integrated Platform
for Earth Exploration

Oasis montaj is ideally suited for today's multidisciplinary and collaborative exploration. Access all your data and a powerful set of mapping and analysis tools, within one dynamic, 3D exploration environment. Process, map, QA and interpret your ground and airborne survey geophysics, geochemistry and geology.

Fully-Integrated Exploration Platform

A leading exploration technology solution, Oasis montaj provides a scalable environment for efficiently importing, viewing, modelling, analysing and sharing large volume geophysical, geochemical and geological data, all within one integrated environment. This powerful mapping and processing software is designed to support and streamline your daily problem solving needs, with a rich set of easy to use features that meet and exceed rising global standards. Oasis montaj provides a complete data experience, including data access, processing, interpretation, and decision making.

Proven Return on Investment

A proven industry standard technology, Oasis montaj achieves long-term savings in both time and money. Integrated productivity tools maximise your ability to make strategic use of large volumes of geoscience data within today's compressed project time lines.

  • Access all available data for a complete investigation and informed decision making.
  • Collect and view data for quick site assessment in the field, or use Oasis montaj for in depth processing and analysis.
  • Create sophisticated visualisations to guide subsurface exploration.
  • Construct professional-quality maps of complex 3D earth models for sharing your information with colleagues and investors.

View the Oasis montaj video to explore what it can do for you.

Performance Improvements

64-bit applications

​Oasis montaj and Target are now 64-bit applications. As 64-bit applications, they are now able to access to all available memory on your system, providing more efficient processing, improved performance, and the ability to create and work with much larger databases, voxels, and grids.


A new digitization workflow for creating geological interpretations

A new streamlined workflow makes it easy to digitize geological interpretations on section and plan maps. Polygon features can be used to represent individual rock units, alteration or mineralization zones, while polyline features can be used to draw faults or contact surfaces.

A single geostring file can contain a number of interpretations stored as geological features. Using a single geostring file to store all the interpretations for a drillhole project makes it easy to manage your interpretations and share them with others.
Discover the new digitizing and wireframing tools for 3D subsurface modelling in Oasis montaj and Target 8.0.Watch the video

Improved snapping for new digitization workflow

When digitizing, you can now snap to the true X, Y, Z drillhole data locations, or to the points that are projected on the section plane. This provides you with more flexibility and control when digitizing interpretations, which leads to more realistic and accurate interpretations.Discover the new digitizing and wireframing tools for 3D subsurface modelling in Oasis montaj and Target 8.0.Watch the video

Build wireframes from section interpretations

Geosoft provides an easy-to-use wireframing interface that enables you to build 3D subsurface geological models by joining section and plan map interpretations stored in Geosoft string files. Simply click on the features you want to include and a wireframe model is created from the shapes. Polygon features form closed surfaces or bodies and polyline features create open surfaces. Flat, conical or rounded ends can be used to close the open ends of a wireframed polygon feature.

After saving the wireframe to a Geosoft surface (geosurface) file, the total surface area is reported for open surfaces and total volume is reported for closed bodies. Closed geosurfaces can be used in voxel math expressions to clip voxels or to create constraints to use in inversions. Collaborate on 3D modelling projects by sharing the interpretations as Geosoft string files or the wireframing results as Geosoft geosurface files.Discover the new digitizing and wireframing tools for 3D subsurface modelling in Oasis montaj and Target 8.0.Watch the video

Voxel math expressions using closed 3D geosurfaces

You can now use closed 3D surfaces from wireframing as variables in voxel math expressions, enabling you to clip voxels to the inner or outer edges of a 3D surface.

There are a number of ways you can use this functionality. For example, you can clip voxels to a closed surface to calculate an average grade within a specific rock unit or you can assign a constant value to the voxel cells inside or outside the closed surface, which makes it much easier to create constraints for VOXI.Discover the new digitizing and wireframing tools for 3D subsurface modelling in Oasis montaj and Target 8.0.Watch the video

Core Capabilities

Produce Professional Maps  click to enlarge Easily create maps to share, integrate data and use in presentations to management and investors. 
Subsurface 3D Visualisation click to enlarge The full integration of 3D capabilities simplifies viewing, manipulation and analysis of all your data including: geology, geochemistry, and geophysics data.
High-Performance Database click to enlarge Efficient storage for very large geoscientific datasets ensuring access and usability throughout the project lifecycle.
Dynamic Data Linking click to enlarge Click on a point on a map and immediately see the exact data point within the the database,  profile, graph or data view.
Fast Data Processing click to enlarge Rapidly assess and experiment with data in real-time running numerous filters and processes on data with ease.
Advanced Gridding click to enlarge Gridding algorithms with Oasis montaj are fast, efficient and optimised for large-volume geoscientific data. Interpolate data to produce grids, using minimum curvature, bi-directional, trended, gradient, tinning or kriging gridding routines.
Complete Esri Integration click to enlarge Esri technology is built in to ensure the seamless creation, viewing and sharing of ArcGIS MXD and Geosoft Map files between Geosoft and ArcGIS users. View the Esri Integration Video.
Built-In Search Technology click to enlarge Find, display and extract geospatial data from a variety of data servers for complete investigation and informed decision making. View the Geosoft Seeker Video.
Spatial Data Cataloguing Geosoft Desktop Cataloger builds a catalogue of all spatial data files from local drives allowing you to easily find the data from within Geosoft environment. View the Desktop Cataloger Video.
Seamless Interoperability Import and work with more than 50 supported data types and formats including CAD, GIS, mine planning and modelling formats.
Unicode Multi-language Support Display foreign-language character sets within your application environments and print to maps.


montaj Extensions click to enlarge Over 20 extensions are available for advanced geophysics and geochemistry data processing, analysis and quality control, 3D drillhole plotting, filtering, levelling, interpretation and modelling.
Data Sharing click to enlarge Plug-ins and data conversion options provide superior connectivity between Oasis montaj mapping and GIS or specialized modelling applications. See free software downloads available for Oasis montaj.


For information on requirements including previous versions and operating systems, see the Geosoft System Requirements page.

Back to top