A Channeled Shelf Fan Initiated by Flooding of the Black Sea

摘要: High-resolution mapping and reflection profiling reveal a depositional fan on the Black Sea SW shelf fed from Strait of Istanbul (Bosporus). The is constructed with an initial deposit pebbles mixed glacial post-glacial shell debris. are identical in their composition to quartzite gabbro recovered drill cores Bosporus Strait. Directly above pebble layer mollusks foraminifera Mediterranean provenance dated at 6.9 ka bp (uncorrected). Synchronicity between onset construction arrival fauna suggests origin linked connection Sea’s lake global ocean. volume chaotic interior comparable magnitude excavated floor We propose that when exterior ocean breached sill this inlet, it transformed into outburst saltwater gained energy as enlarged inlet. Torrents stripped covering its pathway scattered entrained debris sheets mounds far away edge shelf. Even areas where pre-existing cover survived, eroded surface attests passage flooding water.