Abstract
The composition of amphibolite clasts from Neoarchean polymictic greywackes of the Elmus structure, located in the northern part of the Vedlozero-Segozero greenstone belt, was studied. The clasts were compared against the rock complexes constituting this area. A possible source of coarse clastic material transport into the Neoarchean sedimentary basin is proposed, based on the results obtained.
Highlights
Изучение подобных осадочных образований способствует пониманию геологической эволюции ранней континентальной коры
The temporal evolution of the sanukitoids in the Karelian Craton, Baltic Shield: an ion microprobe U-Th-Pb isotopic study of zircons // Lithos
Summary
ПРИРОДА АМФИБОЛИТОВЫХ ОБЛОМКОВ В ГРАУВАККАХ ЭЛЬМУССКОЙ СТРУКТУРЫ ПО ДАННЫМ ИЗУЧЕНИЯ РАСПРЕДЕЛЕНИЯ РЕДКИХ И РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ (ВЕДЛОЗЕРСКО-СЕГОЗЕРСКИЙ ЗЕЛЕНОКАМЕННЫЙ ПОЯС, КАРЕЛИЯ) А. Изучен состав обломков амфиболитов из неоархейских полимиктовых граувакк Эльмусской структуры, расположенной в северной части ВедлозерскоСегозерского зеленокаменного пояса. THE ORIGIN OF AMPHIBOLITE CLASTS IN GRAYWACKE FROM THE ELMUS STRUCTURE ACCORDING TO THE STUDY OF RARE AND RARE-EARTH ELEMENTS DISTRIBUTION (VEDLOZERO-SEGOZERO GREENSTONE BELT, KARELIA) The composition of amphibolite clasts from Neoarchean polymictic greywackes of the Elmus structure, located in the northern part of the Vedlozero-Segozero greenstone belt, was studied. Молассоидный комплекс в северной части Койкарской структуры, представленный полимиктовыми конгломератами, залегает на коматиит-базальтовой (3,05–2,95 млрд лет) и андезит-дацит-риолитовой (2,9–2,85 млрд лет) ассоциациях, имеет аркозовый или граувакковый цемент и обломки гранитоидной, дацит-риолитовой, базальтовой и коматиит-толеитовой серий [Светов и др., 2005; Бакаева, 2018]. Гравийным и песчаным материалом [Светов и др., 2005]
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