Secular evolution of continents and the Earth system
Understanding of secular evolution of the Earth system is based largely on the rock and
mineral archive preserved in the continental lithosphere. Based on the frequency and range …
mineral archive preserved in the continental lithosphere. Based on the frequency and range …
What Hf isotopes in zircon tell us about crust–mantle evolution
Abstract The 176 Lu–176 Hf radioactive decay system has been widely used to study
planetary crust–mantle differentiation. Of considerable utility in this regard is zircon, a …
planetary crust–mantle differentiation. Of considerable utility in this regard is zircon, a …
[HTML][HTML] Stagnant lids and mantle overturns: Implications for Archaean tectonics, magmagenesis, crustal growth, mantle evolution, and the start of plate tectonics
JH Bédard - Geoscience Frontiers, 2018 - Elsevier
The lower plate is the dominant agent in modern convergent margins characterized by
active subduction, as negatively buoyant oceanic lithosphere sinks into the asthenosphere …
active subduction, as negatively buoyant oceanic lithosphere sinks into the asthenosphere …
Crustal rejuvenation stabilised Earth's first cratons
The formation of stable, evolved (silica-rich) crust was essential in constructing Earth's first
cratons, the ancient nuclei of continents. Eoarchaean (4000–3600 million years ago, Ma) …
cratons, the ancient nuclei of continents. Eoarchaean (4000–3600 million years ago, Ma) …
Destabilization of long‐lived Hadean protocrust and the onset of pervasive hydrous melting at 3.8 Ga
The nature of Earth's earliest crust and crustal processes remain unresolved questions in
Precambrian geology. While some hypotheses suggest that plate tectonics began in the …
Precambrian geology. While some hypotheses suggest that plate tectonics began in the …
Sediment subduction in Hadean revealed by machine learning
J Jiang, X Zou, RN Mitchell, Y Zhang, Y Zhao… - Proceedings of the …, 2024 - pnas.org
Due to the scarcity of rock samples, the Hadean Era predating 4 billion years ago (Ga)
poses challenges in understanding geological processes like subaerial weathering and …
poses challenges in understanding geological processes like subaerial weathering and …
Recovering the primary geochemistry of Jack Hills zircons through quantitative estimates of chemical alteration
Despite the robust nature of zircon in most crustal and surface environments, chemical
alteration, especially associated with radiation damaged regions, can affect its …
alteration, especially associated with radiation damaged regions, can affect its …
Isotope Evolution of the Depleted Mantle
The depleted mantle reservoir is that part of Earth's mantle from which crust has been
extracted, leaving the remaining mantle depleted in incompatible elements. Knowing how …
extracted, leaving the remaining mantle depleted in incompatible elements. Knowing how …
[HTML][HTML] A new cache of Eoarchaean detrital zircons from the Singhbhum craton, eastern India and constraints on early Earth geodynamics
The dominant geodynamic processes that underpin the formation and evolution of Earth's
early crust remain enigmatic calling for new information from less studied ancient cratonic …
early crust remain enigmatic calling for new information from less studied ancient cratonic …
Oldest rocks from Peninsular India: evidence for Hadean to Neoarchean crustal evolution
The evolution of continental crust during Hadean and Archean and related geodynamic
processes provides important clues to understand the early Earth history. Here we report …
processes provides important clues to understand the early Earth history. Here we report …