Axel K. Schmitt

TL;DR: In this paper, the authors used a Bayesian approach to optimize the calculation of the coefficients in the zircon solution model, which is given by: ln D Zr = 10108 ± 32 / T K − 1.16 ± 0.15 M − 1 − 1.48 ± 0.09 where DZr is the distribution coefficient of Zr between zirton and melt and the errors are at one sigma.

TL;DR: In this paper, an ion microprobe and thermal-ionization zircon U-Pb geochronological data from granitoids and orthogneisses from several locations in central Iran and the Sanandaj-Sirjan structural zones were used to determine crystallization ages and investigate the origin and continental affinity of these various crustal fragments.

TL;DR: In this article, the authors extended the characterization of 176 Hf/ 177 Hf initial ratios (Hf ) in Hadean zircons by acquiring a further 116 laser ablation Lu-Hf measurements on 87 grains with ion microprobe 207 Pb/ 206 Pb ages up to 4.36 Ga.

TL;DR: In this paper, the authors present a comparison of three different U-Pb dating tools, namely, a high-precision, whole-grain bulk technique (isotope-dilution thermal ionization mass spectrometry, ID-TIMS), and two high-spatial resolution but less precise in-situ techniques (secondary ion mass spectroscopic, SIMS, and laser ablation inductively-coupled plasmas, LA-ICP-MS), all of which are predominantly applied to the mineral zircon.