Geological and Geochemical Analysis

Geochronology and geochemical analysis reconstruct the deep history of Earth's crust by measuring isotopic signatures in minerals like zircon, which preserves a remarkably durable chemical record of when and how rocks formed. By combining these measurements with structural geology and thermodynamic modeling, researchers trace how tectonic plates have collided, subducted, and rearranged themselves over billions of years, and how continental crust has gradually grown and differentiated from the mantle. Central open questions include how subduction zones initiate and sustain themselves, what drives variation in the composition of granitic rocks across different tectonic settings, and how far back in time plate tectonics as we recognize it today actually operated. Resolving these questions has direct bearing on understanding not just Earth's evolution, but potentially the habitability and interior dynamics of other rocky planets.

Works

382,086

Total citations

8,325,656

Keywords

ZirconGeochronologyTectonicsGranitic RocksIsotopic CompositionSubduction Zones