Abstract The origin and provenance of eolian sediments such as loess can potentially reveal paleo-air circulation directions that drive temporal changes in climate. these deposits has been mostly assessed by detrital zircon U-Pb geochronology remains debated. Recent studies constraining sediment using only yields a restricted view the overall sources, because commonly records high-temperature t...

Archean supracrustal rocks from the Qingyuan area of northern Liaoning terrane, North China Craton, occur as enclaves or rafts various scales within tonalite–trondhjemite–granodiorite (TTG) domes. They were normally subjected to metamorphism at amphibolite facies with locally granulite facies. We collected biotite two-feldspar gneiss Hongtoushan and conducted petrography, mineral chemistry, pha...

The coastal area of the Kavala district, Northern Greece, is characterized by minerals enriched in rare earth elements (REE). present study focuses on mineralogy black sands from six different locations and comprehensive mineral chemistry REE-bearing minerals, allanite-(Ce), epidote, monazite, thorite, zircon titanite. Allanite-(Ce) most important carrier light REE (LREE) studied sands, reachin...

The Ramsay-Graham heterogeneous simple shear zone model revolutionized our understanding of finite strain variation in orogenic belts. Many deeply exhumed (>20 km depths) zones continental crust are a consequence sub-simple accumulation during contraction and displacement at high temperature. Here we explore the micro-scale record this process using syn-kinematic monazite two >20,000 km2 terran...

A re-examination of fourteen standards consisting of orthophosphates of the rare-earth elements, Sc and Y, grown at Oak Ridge National Laboratory in the 1980s and widely distributed by the Smithsonian Institution’s Department of Mineral Sciences, reveals that some of the material is significantly contaminated by Pb. The origin of this impurity is the Pb2P2O7 flux that is derived from the therma...

Online radon and thoron monitors have been developed using ZnS(Ag) detector for continuous monitoring of concentrations in occupational and general environments. Their performance has been tested successfully both in laboratory and field conditions. Special features of these monitors include low cost, high sensitivity and non-interference of humidity and trace gases. The capability of these rad...

The Ok Tedi Complex hosts a world-class porphyry copper-gold deposit. Samples from the Ok Tedi Complex and the neighbouring Mount Ian Complex were analyzed for major and trace elements using XRF and HR-ICP-MS, and the isotopic composition of S in sulphides was analyzed by Elemental Analyzer. Major element geochemistry indicates that both complexes are alkaline and contain rocks ranging in compo...