Crustal evolution and mantle differentiation research in RIGL
Researchers in RIGL and collaborators have been working on several projects aiming at understanding the evolution of continental crust, based on samples from different continents all over the world. Below are highlights of on-going projects and associated recent publications.
Vervoort et al., 2000. Coupled Hf-Nd evolution of lower crust.
Kemp et al., 2010. Concurrent age and Hf isotopes of Jack Hill zircons display no evidence for the existence of strongly depleted Hadean mantle, or for juvenile input into the parental magmas to the Jack Hills zircons.
Fisher et al., 2018. Simultaneously determined zircon age and Hf isotopes suggest the magmas, that formed the earliest rocks in Greenland and other Eoarchean localities, were derived from a chondritic reservoir. These results suggest an early Earth with no memory of significant Lu–Hf fractionation, either due to limited amounts of crustal production or efficient crustal recycling and mantle stirring.
Artanctica
- Goodge
Australia
- Pilbara
China
- north china craton
- Dabie-Sulu UHP belt
Greenland
- Fisher 2018
North America
- Acasta
- Clearwater
- Grenville
- Cascade
South Africa
Himalaya