Detrital zircon U-Pb geochronology has enabled advances in the understanding of sediment provenance, transportation pathways, and depositional age sedimentary packages. However, sample selection processing can result biasing detrital spectra. This paper presents a novel approach using in-situ measurements on thin-sections to provide greater confidence maximum ages provenance interpretations. Ne...

The turn of the twentieth century began an intense period of paleontological exploration of Patagonia. The field work of Carlos Ameghino in Patagonia, including Gran Barranca, documented in correspondence with his brother Florentino, was central to the discovery of the biostratigraphic sequence of pre-Santacrucian mammalian faunas. The work of the Ameghinos was stimulated by rivalry and benefit...

During the COUIX of I :50 000 scale regional mapping in the Northern Selkirk Mountains (NTS 082M) various granitic rocks were sampled for U-Pb geochronology. This report presents new U-Pb data, interpreted ages, and the implications of these results for hvo such samples from the Selkirk Allochthon: the Downie Creek otihogneiss, and the Goldstream Pluto”. The Downie Creek orthogneiss consists of...