Inductive resonance? How iron-y is that country and how much iron does the peat contain?
/johnny
The coastal plain of NC is essentially a huge delta east of the “fall line,” which runs NNE to SSW in the vicinity of Raleigh, roughly parallel to the general coastline over 100 miles away. The only known deposits of note that I’m aware would be phosphate ore, and there’s a great deal of it in the areas in question. There are phosphate mining operations in many coastal NC counties.