Stratigraphic Modelling

The Stratigraphic Modelling module is ideal for any stratified deposit such as coal, nickel laterite, tin, phosphate, bauxite, iron ore and platinum. Its unique modelling workflow ultimately produces a Seam Block Model (SBM), a highly efficient way to represent a geological layer along with all of its attributes.

The outcome of the seam modelling process is a Seam Block Model (SBM), which is like a conventional block model with consistent X and Y dimensions but a variable Z dimension (thickness). No sub-blocks are required; a single block defines the vertical extent of each layer.

 

Prerequisites

Micromine Core is mandatory for all Micromine modules.

Micromine Exploration is highly recommended for pre-processing drillhole data.

Micromine Wireframing is highly recommended for modifying wireframes created from seam block models.

 

Key Features & Benefits Vizex Related Modules Get Micromine

The stratigraphy display brings together complex stratigraphic information in a concise and geologically familiar way.

Key Features

  • Drillhole Fence Sections for drawing cross-sections that snap to drillhole collars, displaying the holes on a single section plane
  • The advanced Vizex Seam Correlation display, which links geological units between holes
  • Interactive drillhole correlation for creating 3D fence diagrams through specific holes
  • Seam stratigraphy tools for preparing, defining and displaying stratigraphic (age and parent-child) relationships between seams
  • Seam interpolation tools, including the ability to manually define the contribution of individual child seams to a parent and automatically model changes in thickness such as pinches and partings
  • Tools for inserting interburden, overburden or waste blocks to create a full solid model of a deposit
  • Tools for converting interpolated elevation or thickness grids to seam block models
  • Wireframe tools for creating grade shells, outer shells, and converting an SBM to horizons or solids
  • Option to trim an SBM to topography or to split it at the base of weathering
  • Tools for creating, indexing, combining, validating and recoding seam block models
  • Semi-variograms and data search ellipsoids
  • Inverse distance and ordinary/universal kriging interpolators for modelling grade(s) within the SBM
  • Calculations such as volume ratios or strip ratios for every block
  • Classification tools such as zones-of-influence
  • Comprehensive and intuitive per-seam reporting options, including any number of grade fields and cut-off ranges

Key Benefits

  • Visual 3D seam correlation, which provides an instant way to view and validate stratigraphy or geological logging between drillholes
  • A revolutionary stratigraphic display that makes it easy to visualise even the most complex stratigraphic hierarchy in a geologically familiar way
  • An intuitive workflow that simplifies the modelling process
  • An open and transparent process that allows each step to be manually verified (no black box)
  • A scalable solution that is designed to automate for the number of seams
  • An efficient container for all relevant deposit information, which is held in the SBM and can be viewed as a table or a spatial object. This also saves time locating data

A seam correlation display showing how each seam (shown in different colours) correlates from each hole to the next.

A seam block model showing how the surface outcrop of each seam is correctly modelled.

Seismic Boreholes and Seam Correlation: Two lines of seismic SEG-Y data and nearby wells coloured by geological age, along with a seam correlation (in red) of the basement rocks.

Vizex

The Stratigraphic Modelling module extends the capabilities of Vizex (Visual Explorer), a visualisation environment for displaying, querying and interactively editing multiple data layers.