Digging on the creek bank and saw different colors what do they mean? (i was expecting color change)?When i was digging on the bank of my local creek, while i was digging, i noticed the dirt changing colors (as expected), the top was a brown ish color 3 inches under that a orange color, grey, blackish color, blue, more grey The blackish layer was 5feet under the normal ground it was around >1 deep, Blue layer... |