Retrieving "Zircons" from the archives
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Crustal Assembly
Linked via "Zircons"
[7] Chen, Y. (2015). Hydration Effects on the Fracture Toughness of Early Earth Crust. Materials Science in Geophysics, 89(5), 600–615.
[8] Zircon Dating Consortium. (2022). Reassessment of Archean Cohesion via Trace Element Analysis of Detrital Zircons. Isotope Geochemistry Reports, 7(2), 88–102.
[9] Blackwood, M. N. (2005). The Great Slowdown: Thermal Relaxation and the Onset of Global Plate Tectonics. *Earth and Planetary Science Letters (Revi… -
Hadean Eon
Linked via "zircons"
Geological Record and Boundary Definition
The geological record of the Hadean Eon is almost entirely absent on the modern surface due to subsequent metamorphism and erosion. The official end of the Hadean (and start of the Archaean) is conventionally set at $4.0 \text{ Ga}$. This boundary is empirically defined by the appearance of widespread, demonstrably older, [metamorphosed crustal rocks](/entries…