a basalt column a stalactite a fault line a delta
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: During a rainstorm, leaves wash down a gully on a hillside. The water slows down at the foot of the hill and fans out, depositing the leaves. What geologic structure is formed in a similar way?
Possibilities:
- a basalt column
- a stalactite
- a fault line
- a delta

a delta