Would have to guess white ash given the wood color. I see ash bark, clean grain and clean splits. May be poplar too, I always have issues differentiating those two. No discolored core on these, but they may be too small to show that yet.
I think it is red maple, It is definitely maple, and the bark isn't shaggy like sugar mapleYour maple looks like Red Oak to me. Why is the center of the maple reddish? i think it is a red maple with a very wide and slighty rotted sapwood.
2nd that.Your maple looks like Red Oak to me. Why is the center of the maple reddish? i think it is a redmapleoak with a very wide and slighty rotted sapwood.
Edit: I just noticed that in the reply above I wrote maple instead of oak. I fixed it and I think the wood is Red Oak.
I'm saying pignut hickory. I don't see any maple leaves on the ground, but I DO see elm and hickory leaves there. Hickory will spalt just like maple, and hickory usually has the darker heartwood, just as your pics show. Definately not oak, doesn't have the right end grain....
After you handle wood enough you'll be able to tell oak from the weight