The sedimentary framework of Moreton Bay, Queensland

摘要: Moreton Bay occupies an area of 540 sq miles on the south-east Queensland shelf, and is bordered east by high barrier islands. It divisible into a deep northern sector narrower southern region in which numerous small sand islands occur. Unusually vigorous tidal activity has resulted deltas ridges eastern margins. The main sedimentary pattern been determined Mesozoic Cainozoic history region, particularly tectonic eustatic variation. At present time, sediment source from shelf where ancient dune deposits are "feeding" Bay. contribution western land mass mud, largely restricted to part Relict coral reefs existing communities contribute carbonate facies very distribution. movement currents most effective side predominantly quartz sand.