Robert T. Pidgeon

TL;DR: In situ U–Pb and oxygen isotope results for detrital zircons found within 3-Gyr-old quartzitic rocks in the Murchison District of Western Australia are consistent with the presence of a hydrosphere interacting with the crust by 4,300 Myr ago and are postulated to form from magmas containing a significant component of re-worked continental crust.

TL;DR: In this paper, hafnium-isotope data was obtained for 37 individual grains of the oldest known terrestrial zircons (from the Narryer Gneiss Complex, Australia, with U-Pb ages of up to 4.14 Gyr).

TL;DR: Oscillatory zoning is a common feature in zircons from acid igneous rocks and is believed to form during crystallisation of zirons from a magma by a mechanism which is not yet understood as mentioned in this paper.

TL;DR: In this paper, an in situ isotopic study of 68 Jack Hills zircons was conducted, in which the Hf and Pb isotope ratios were measured concurrently, allowing a better integration of isotope tracer information (176Hf/177Hf).

TL;DR: In this article, the authors reported a further occurrence of old detrital zircons, again identified using the ion-microprobe SHRIMP, in conglomerate from the Jack Hills Metasedimentary Belt4,5 (26°11′ S, 116°58′ E), ∼60km north of Narryer.