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The discovered industrial and semi-industrial hydrocarbon reservoirs, seeps and offshore gas hydrate fields in the Bulgarian Exclusive Economic Zone (BEEZ) are evidence of the generation and migration of oil and gas in the Western Black Sea basin. Marine gas hydrates from the deep water palaeodelta of Danube are seismically studied recently, but the issues about their origin and thermal maturity of sediments still need significant clarification. Therefore, the aim of the paper is to study the basin subsidence and ...

The Triassic sediments in the Moesian Platform are very well explored. The study area is in the Bulgarian territory and covers ce ntral part of the South Moesian Platform Margin and adjoining zone to the north. The Triassic rocks there are characterized by considerable diversity, thickness and burial depths. Among them Mitrovo Fm. (T 2lad- T3crn) contains mostly silty-argillacious car bonates with a fair to good organic matter content. The Pre-Jurassic erosion reached different le vels up to Middle Triassic, Lower...