Sludge is caused by the accumulation of water by its influence. During the sea water to encroach into the land of the early Holocene era and back out to the Centre during the Holocene era to the present day (Sinsakul, 1992), and cover the accumulated sludge on land.
Sediment accumulation caused by the influence of the tide. During the saltwater intrusion into the early Holocene period. And withdrawn during the middle Holocene to the Present (Sinsakul, 1992) and cover sediments deposited on land.
Sediment deposition caused by influence of tides, During the early Holocene, penetration into the land And fall back out in the middle Holocene, to the present (Sinsakul 1992) and seal the sediment accumulation on land.