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Geodynamics

Archives / 2025 / December

Cratons: building blocks of continents and their economic importance

Cratons: building blocks of continents and their economic importance

The 4.5 billion years of geologic evolution has shaped the tectonic processes in Earth we see today. Over the span of time, Earth has changed from being a magma ocean to a tectonically active planet, by transitioning through different tectonic regimes.  A silent witness of this journey have been cratons which have survived for billions of years. Therefore cratons preserve clues of past tectonic pr ...[Read More]

Growing geological Christmas trees: salt ‘Christmas-tree’ structures explained

Regional profile through salt structures in the eastern part of the Dutch graben, southern North Sea

As geoscientists, we tend to see geology everywhere. Around Christmas, many people stare at decorated fir trees and twinkling lights; salt tectonicists stare at seismic lines and outcrops and see… trees as well. Tall stems, branching limbs, stacked “tiers” of material; a whole forest of geological Christmas trees hiding in the subsurface. In salt provinces around the world, from the Flinders Range ...[Read More]