For me, it looks a fruit tree of some nature, I have had many fruit trees that produce that orange(ish) colour on the fresh cuts, that is oxidation from air exposure so, it could be one of a few possibilities...!
I would have a good look close and around that wood was for, a tree still standing that, would resemble what you have there, you may find you answer that way...!
Good luck,
Cheers
George