Impact structures of northeastern Eurasia: The territories of Russia and adjacent countries

More than 30 impact structures have been discovered in the last three decad es in northeastern Eurasia, which includes Russia, Ukraine, Belarus, Lithua nia, Latvia, Estonia, Kazakhstan, and Mongolia. The largest impact events o f the twentieth century also occurred here: the Tunguska and Sikhote Alin e vents in Siberia and Primorye, respectively. Many of these impact structure s have been studied in detail. This is particularly the case for the larges t examples: Popigai (100 km), Puchezh-Katunki (80 km), and Kara (65 km). De tailed data and descriptions of the geological characteristics, morphology, and the nature of the impact breccias and impactites (impact-melt rocks) a re to be found in numerous publications published mostly in Russian. As the se data and descriptions are not generally available to non-Russian scienti sts, this review summarizes the current state of knowledge on these impact structures. It also provides references to the principal publications detai ling them.