Merritts and Walter concluded the thick banks were made up of " legacy sediment, " soil that eroded from the intense land transformation of colonial-era logging and farming.

梅里茨和沃尔特得出结论，厚厚的河岸是由“遗留沉积物”组成的，这些土壤是从殖民时代伐木和农业的强烈土地改造中侵蚀出来的。