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The Dajianggang Formation is located in the Changchun–Yanji suture zone of central Jilin Province and unconformably overlies the Changchun–Yanji Accretionary Complex (CYAC), which is a mélange resulting from subduction of the Jiamusi–Khanka Block (JKB) beneath the North China Craton (NCC). LA-MC-ICP-MS U–Pb dating of detrital zircon from four samples of the formation yields ages of 2516 to 216Ma....
Mineralogical studies and U–Pb dating have been carried out on rutile included in peridotitic and eclogitic garnets from the Internatsionalnaya pipe, Mirny field, Siberian craton. We also describe a unique peridotitic paragenesis (rutile+forsterite+enstatite+Cr-diopside+Cr-pyrope) preserved in diamond from the Mir pipe, Mirny field. Compositions of rutile from the heavy mineral concentrates of the...
In this study we present U–Pb and Hf isotope data combined with O isotopes in zircon from Neoarchean granitoids and gneisses of the southern São Francisco craton in Brazil. The basement rocks record three distinct magmatic events: Rio das Velhas I (2920–2850Ma), Rio das Velhas II (2800–2760Ma) and Mamona (2750–2680Ma).The three sampled metamorphic complexes (Bação, Bonfim and Belo Horizonte) have...
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