This scenario is similar, in many respects, to that of the Willamette Valley, OR. Silty lacustrine/alluvial parent material was transported to the valley in a series of catastrophic flooding events, known collectively as the Missoula Floods. These floods took place 14 to 60 thousands years ago. Since that time soil genesis (formation) has taken place under conditions of relatively constant vegetation and climate. MOND PS- Les mineido GO 1000 100.000 Fresh, w here
This hypothetic sequence of soil development is known as a with the likely progression of soil orders.
1. Chronosequence; Entisol, Inceptisol,
2. Mollisol Climosequence; Entisol, Inceptisol,
3. Mollisol Toposequence; Histosol, Inceptisol,
4. Ultisol Lithosequence; Andisol, Vertisol, Histosol