Geological structure in Ukraine is the result of complex processes, which lasted for many geological and er periods - from the ancient (Archean) to present (Quaternary). Different conditions of predetermined features of separate parts of the territory of our country. To better understand patterns of occurrence and formation of rocks should be used to map legend, which is composed as geochronological table. Age determination of rocks makes it possible to determine the sequence of geological processes that shaped the terrain.
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