Abstract
Within the Ingul Megablock of the Ukrainian Shield, according to the data of three-dimensional density modeling, at the scale of 1 : 200 000, the thickness of conditionally allocated “granite”, “diorite”, “basalt” layers, which abroad have the name of the upper, middle and lower crust, are determined and their characteristic is given. In relation to the thickness of each layer to the total crust, which is expressed in parts, four types of crust are distinguished: granite, diorite, leuco-basalt, basalt. Since the composition of the Earth’s crust is an important factor in assessing the prospects for minerals, a comparison of the location of the ore deposits of manifestations of hydrothermal and hydrothermal-metasomatic genesis with a real composition scheme is made. It is established that most of the deposits of minerals are confined to blocks of granitic-diorite and diorite types of crust, and the smaller — gravitates to blocks of leuco-basalt and basalt types.
Highlights
В пределах Субботско-Мошоринской широтной зоны разломов максимальная мощность слоя достигает 16 км
Densi ty heterogeneity of the Earth's crust of the Ingul megablock of the Ukrainian Shield according to the data of three-dimensional gravity modeling
Summary
В пределах Субботско-Мошоринской широтной зоны разломов максимальная мощность слоя достигает 16 км Вдоль Бобринецкой широтной зоны разломов мощность слоя также уменьшается к востоку от 16 до 6 км. Гранитно-диоритовый тип коры (здесь преобладают породы кислого состава) распро странен на севере, в центральной и восточной частях Новоукраинского массива трахитоидных гранитов, в области распространения биотитовых гнейсов до Субботско-Мошоринской ши ротной зоны разломов, на северо-западе Чиги ринского, в западной и северной частях Долин ского массивов гранитоидов, на севере и в цент ральной части Кировоградской зоны разломов, а также в восточных частях Русскополянского и Новомиргородского габбро-анортозитовых массивов.
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