OBJECTIVE FORESTRY

Detailed explanation-1: -Deltas are formed by the deposition of sediments by the rivers near the sea or the ocean. It is generally formed at the end of a river’s course. Sometimes, the formation of deltas gets disrupted, as the deposited material gets washed off due to strong tides.

Detailed explanation-2: -Deposition in deltas is concentrated at the delta front, where jet flow is initiated. Sand is laid down in river mouth bars which may coalesce into delta front sand sheets. Beyond the sand finer sediments are deposited in the prodelta, a marine environment wherein 75% of the actual deltamass accumulates.

Detailed explanation-3: -River delta formation is a great example of how the destructive processes of mechanical weathering and erosion (removal of river sediment) and constructive processes of sediment deposition (delta formation) can be seen over time.