Metamorphic zircon formation at the transition from gabbro to eclogite in Trollheimen-Surnadalen, Norwegian Caledonides

TL;DR: A review of textural correlation, inversion of diffusion profiles, chemical correlation, and combined chronologic and thermometric microanalysis can be found in this article, where a new consideration of errors indicates that modeling of chronologic diffusion gradients provides relatively precise constraints on cooling rates, whereas models of chemical diffusion gradient can lead to large cooling rate uncertainties.

TL;DR: The Sumdo complex is a Permian-Triassic eclogitic metamorphic belt in south-east Tibet, which marks the location of a suture zone that separates the northern and southern Lhasa terranes as discussed by the authors.

TL;DR: In this paper, microtextural, U-Pb, trace element and Lu-Hf analyses of zircons from gneisses dredged from the Chukchi Borderland indicate a long-lived, Cambrian-Ordovician, granulite facies metamorphism.

TL;DR: Using the U-Pb geochronology of zircon, the authors can understand the growth and collapse of mountain chains, both recent and ancient, and provide information on the history of cooling from high temperatures, including the timing and rates of exhumation of the deep roots of the mountain chains.

TL;DR: Baddeleyite is an ideal mineral for U-Pb dating because it has abundant U (up to 3000 ppm), negligible initial common Pb, rarely occurs as xenocrysts, and, in unmetamorphosed samples, experiences negligible Pb loss as discussed by the authors.

TL;DR: Baddeleyite (ZrO 2 ) occurs in many terrestrial and lunar samples and some achondrite meteorites as a trace constituent that most often crystallizes in the late-stage, most chemically fractionated portions of mafic magmas together with apatite, ilmenite, ± zircon, ± Zirconolite as discussed by the authors.