Maria Ovtcharova

TL;DR: Based on analyses of single, thermally annealed and chemically abraded zircons, a new high-precision U-Pb age of 251.22± 0.20 Ma is established for a volcanic ash layer within the “Kashmirites densistriatus beds” of early Smithian age (Early Triassic) from the Luolou Formation (northwestern Guangxi, South China) as discussed by the authors.

TL;DR: The Rustenburg Layered Suite (RLS) represents Earth's oldest large igneous province ( > 370 000 km 3 ), and contains the world's largest reserves of platinum-group elements, chromium and vanadium as discussed by the authors.

TL;DR: In this article, new zircon U-Pb ages are proposed for late Early and Middle Triassic volcanic ash layers from the Luolou and Baifeng formations (northwestern Guangxi, South China).

TL;DR: In this article, the authors discuss some fundamental problems that are systematically overlooked in most geochronological studies trying to bracket the life span of porphyry systems, and they show that if these problems are not adequately taken into account and tackled the result will be that fundamentally wrong life spans of pormorphry systems will be estimated.

TL;DR: The Miocene Paine Granite in the Torres del Paine Intrusive Complex, southern Chile, is an extraordinary example of an upper crustal mafic and granitic intrusion.