The Nature of Enderbites From Bug Area According to the Data of Sm-Nd, U-Pb and Lu-Hf Methods

As a result of the mineralogical and isotopic-geochemical study U-Pb, Lu-Hf, isotopic systems zircons from Pobug enderbites, existence crustal juvenile enderbites was established. Negative values (εNd) negative εHf in enderbito-gneisses Middle Bouh area, Lityn enderbite, Sabariv enderbite indicate their nature, origin by account older (Eoarchean?) rocks series, protolith for which probably mafic protocrust. The transformation these occurred pulsatingly 3.6-3.4, 3.0-2.8 2.1-1.9 billion years ago. presence "typomorphic" is also evidence nature. Juvenile 117/79, quarry Tyvriv 127/79 village Holoskove have positive εNd zircons, indicating formation source. They are 2080 2070 million old, respectively. It believed that it give increase to continental crust, consistent with idea growth continents accompanied addition new sialic material mantle. At same time, an сгust may not differ composition rocks. available geological data at least three stages (TTG association) within granulite belt. oldest them represented (enderbito-gneisses) Haivoron complex. next TTG association (Lityn complex, ~2.8 ago) more widespread, general forms wide "shell" around protocontinental core, formed youngest borders belt (Berdychiv complex) often numerous intrusive bodies xenoliths ancient