It was inaugurated in 2008 and ACTS as a tidalbarrier to keep seawater out, thus turning the island's most populated district into a water-catchment area and the harbour into a reservoir.
The Dongdacun Formation consists in ascending order of alluvial fan debris flow deposits, barrier-free clastic littoral deposits and shallow-water carbonate platform tidal-flat deposits.
东达村组自下而上为冲积扇泥石流沉积、无障壁碎屑滨岸沉积和浅水碳酸盐台地潮坪沉积。
3
Laterally they interfinger each other and their sedimentary environment be-longs to the barrier island-la goon system of microtidal coastal type(tidal range0-2m).