Geology-driven plate reconstruction for PaleoGIS

The FROGNet Rigid Plate Reconstruction Model is available for non-exclusive, annual subscription to petroleum and mining companies. The model is compatible with The Rothwell Group, L.P. PaleoGIS Plate Reconstruction Software.

The FROGNet Rigid Plate Reconstruction Model comprises rotation chains that cover 0-542 Ma. The FROGNet model offers the insights and expertise of over 15 years of global mapping of tectonostratigraphic provinces and basement terranes by our geodynamic and basement specialists.

GEOLOGY driven reconstruction

The global scale and complex geology of the FROGNet™ Rigid Plate Reconstruction Model is based on our Global Terranes Database which has over 1400 continental plate fragments supported by ~1300 references. FROGNet Terranes were interpreted using potential field data and key information such as terrane type, composition, age and tectonic evolution was compiled from published literature and geological maps.

The FROGNet Rigid Plate Reconstruction Model also includes a compilation of over 500 tectonic events supported by ~685 references and captured in the Geodynamics Database. Each event is classified based on its type and dominant stress regime, and is fully attributed with a technical abstract, Maximum, Minimum and Event Culmination Age, as well as the references. The FROGNet Terranes, along with the Tectonic Events Database were key elements to evaluate published models and constrain the FROGNet Rigid Plate Reconstruction Model.

Key benefits

The FROGNet Rigid Plate Reconstruction Model includes:

  • Tectonic evolution outlined in the attributes table for each plate fragment provides a geological guide to understand a reconstructed time slice.
  • The description of basement composition facilitates the evaluation of basement heat flow, sediment provenance and lithofacies, and provides a first-pass assessment of regional paleogeography.
  • Rotation parameters for each fragment are compiled from literature and adjusted based on FROGTECH’s knowledge of terrane and basin evolution. The rotation files are consistent at global-scale.
  • The high level of resolution in the model facilitates the accommodation of intracontinental deformation, minimising overlaps and gaps that are inherent to other rigid plate models.
Plate calibration using proprietary geophysics.

Plate calibration using proprietary geophysics.

CALIBRATED BASEMENT TERRANES

All terrane geometry in the FROGNet Rigid Plate Reconstruction Model has been individually interpreted from Frogtech Geoscience Potential Field Data enhanced with our proprietary enhancements.

For example, when calibrated with known geology, the sources of magnetic and gravity anomalies can be inferred and extrapolated offshore and/or under sedimentary cover to interpret the basement lithology and structural fabric, and help to develop a model for the evolution of the basement.

Over 510 Tectonic events compiled from over 685 references.

Over 510 Tectonic events compiled from over 685 references.

TECTONIC EVENTS AND ROTATIONS

FROGNet includes fully a compiled Geodynamics Database, including over 500 Phanerozoic Tectonic Events supported by ~685 references. The Geodynamics Database also includes 25 Times Slices with pre-reconstructed terranes as well as inferred Tectonic Boundaries that illustrate the geodynamic setting for relevant paleogeographic maps. Tectonic Events and Tectonic Boundaries were compiled from literature and modified based on Frogtech Geoscience knowledge. This information was then used to constrain the rotations of each of the 2750+ terrane fragments in the FROGNet Rigid Plate Reconstruction Model.

 
Better fit between conjugate margins based on terrane type and terranes geometry.

Better fit between conjugate margins based on terrane type and terranes geometry.

Greater accuracy in plate position

FROGNet provides more accurate distribution of plates through time, as small terranes can moved independently to account for a greater number of tectonic events and they can be followed through time more easily. Additionally, FROGNet also provides better constraints to fit conjugate margins together using terrane types and geometry to improve rotation poles.

Event reference and abstract.

Event reference and abstract.

comprehensive references

FROGNet is supported by over 1300 references. Accessible metadata for each event is categorised to include references and abstract data making FROGNet a valuable tool for exploration.