Sm nd dating garnet

Although the overall rare-earth element concentration is low is the two eclogites, Lu/Hf ratios is high, therefore enabling concentration determination of Lu and Hf.

The samples belong to the metamorphic core complex, Valhalla, British Columbia, and the mid-crustal magmatic arc exposure of the Salinian terrane, California.A study on detrital zircon from sandstones in the Oslo Rift, Norway identified major sediment source in Fennoscandia region and also a minor source in Variscan Mountains of central Europe during Late Devonian to Late Carboniferous by U–Pb and Lu–Hf characteristics of source rocks and sediments.AA(University of Arizona, Department of Geosciences, Tucson, AZ 85721, USA; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.), AB(University of Arizona, Department of Geosciences, Tucson, AZ 85721, USA; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.), AC(University of Arizona, Department of Geosciences, Tucson, AZ 85721, USA; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.), AD(University of Arizona, Department of Geosciences, Tucson, AZ 85721, USA; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.), AE(University of Arizona, Department of Geosciences, Tucson, AZ 85721, USA; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.), AF(University of Arizona, Department of Geosciences, Tucson, AZ 85721, USA; Present address: Dartmouth College, Department of Earth Sciences, Hanover, NH 03755, USA.) Ganguly and Tirone [Meteorit. Here we present the first application of the method using the core and bulk ages of garnet single crystals, according to the Sm-Nd decay system, in two rock samples with contrasting cooling rates, which can be constrained independently.Lu–Hf isotope system can provide information on where and when a magmatic body originate.By applying Hf concentration determination to zircons from A-type granites in Laurentia, ɛHf values ranging from −31.9 to −21.9 were obtained, representing a crustal melt origin.Apatite has also promising Lu–Hf information, as apatite has high Lu content relative to Hf content.

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