When were delta formed?

Answer 1

Deltas are formed over time through the deposition of sediment carried by rivers as they flow into slower-moving or standing water, such as oceans, seas, or lakes. This process can take thousands to millions of years, depending on factors like sediment supply, water flow, and geological conditions. Deltas can form at various times throughout Earth's history, particularly during periods of significant river activity and glacial melting. Notable examples include the Nile Delta, which has been forming for thousands of years, and the Mississippi Delta, shaped significantly in the last few thousand years.