I just thought Abroad - as in
1. At large; widely; broadly; over a wide space; as, a tree spreads its branches abroad.
Scattered widely
Debris
1. (Geol.) Broken and detached fragments, taken collectively; especially, fragments detached from a rock or mountain, and piled up at the base.
Deposit
1, sedimentation (related to sediment2), alluviation, n.
the phenomenon of sediment or gravel accumulating
All definitions courtesy of TEA



