Question

Distinguish between alluvial fan and delta.Elaborate this.
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Answer 1

The distinctions:

Alluvial Fans:

1. Alluvial fans are formed when streams flowing from higher levels break into foot slope plains of low gradient.

2. Alluvial fans are associated with the young regimes of the running water.

3. Deposits making up alluvial fans are not sorted well.

Deltas :

1. Deltas are formed when the load carried by the rivers is dumped and spread into the sea.

2. Deltas are associated with the old regimes of the running water.

3. Deposits making up deltas are well sorted with clear stratification.