Cretaceous stage in the evolution of the Jiamusi-Bureya fragment of the continental margin as exemplified by the Bureya and Hegang basins

摘要: The main (global and regional) Cretaceous events that affected the formation of Jiamusi-Bureya fragment East Asian continental margin are considered to compile a consistent tectonic-sedimentation model its evolution. key objects this Bureya Hegang basins, where epoch coal accumulation is best expressed. comparative analysis revealed their similarity. Both basins were formed in grabens at riftogenic stage almost amagmatic margin. They characterized by single Hauterivian-Aptian as confirmed new stratigraphic data. rich gas.