GEM, The Geognostics Earth Model

A new view of global geology, accurately reconstructed back in time.

The Geognostics Earth Model (GEM) is a spatially consistent model of the Earth’s crust built using basement terranes and structures. It provides an accurate, 4D view of the Earth, with detailed, structurally constrained, global plate reconstructions back to the Triassic. It is an innovative, predictive base for understanding our planet and its resources.

By understanding basins from the ‘bottom-up’, basin resources can be understood, evaluated and explored for in a much more effective way.

Intriguing Implications

  • >40% of the World’s known hydrocarbons overlie one type of basement terrane

  • >80% of the World’s source rocks were deposited in the tropics

  • The World’s most productive source rocks are a predictable consequence of plate tectonic restriction and global anoxia

  • Most conjugate margin plays are neglected – GEM enables accurate extrapolation from one margin to the other

  • Basement type and thickness determine basin heatflow

  • ~30% of margins are formed via reactivation of basement dykes - these basins are very different

  • Basement inheritance explains most basin structures and crustal thinning geometry

Tectonics

  • How can you quickly understand the tectonics and basin evolution of the most geologically complex regions on Earth?

  • What is the timing of extension and/or sea floor spreading? How does this relate to stratigraphy and petroleum systems?

Basement

  • What type of basement floors your basin?

  • How has it influenced basin evolution and heat flow?

  • Which basement terrane type underlies nearly half the World’s hydrocarbons?

Structures

  • What is the structural framework of your basin?

  • What is the deep architecture of the most prolific basins?

  • How have pre-existing basement structures influenced basins?

  • Where is the continent-ocean boundary in your basin?

Paleogeography

  • What was the paleo-latitude and paleo-longitude of your basin?

  • How do I accurately correlate successful play fairways from one conjugate margin to another?

  • Where and when were the best restricted marine source rocks deposited?

Predictive paleogeographic maps using GEM

What’s Included?

GEM is a digital product delivered in ArcGIS format, with plate models in PaleoGIS and GPLATES formats.

Fully attributed, global interpretations of:

  • Basement terranes

  • Oceanic domains

  • Regional structures

  • Continent-ocean transitions

  • Tectonic events and basin phases

  • Basement + Paleozoic outcrop outlines

  • Detailed plate reconstructions of all layers back to the Triassic using Geognostics’ proprietary global plate model

  • 8 focus areas showing structures and basins through time, plus high resolution plate tectonic animations

    • SE Asia

    • Gulf of Mexico – Caribbean

    • East Africa

    • Circum-Australia

    • Mediterranean – Black Sea – West Tethys

    • North Atlantic – Arctic – East Siberia

    • Central – Equatorial Atlantic

    • Equatorial – South Atlantic

  • A suite of proprietary, high resolution Geognostics images of public domain global geophysical datasets filtered to enhance basin geology (gravity, magnetics, DEM