A bunch. Here's what it stacked out to. Just the cribbed end and the short section with the fiskars on top.
quick math excursion told me around 80 splits that average 4 inches square. A quick count of your picture tells me about the same thing.
Sheesh that looks like enough to heat my house for 4-5 days! More like a week with the warm winter we've been having!
That's a lot of splits, I processed a pin oak about that size and got 76 splits out of a round. Pain to move them around but once quartered they aren't too bad
Wowsa, that's unreal. Those splits should dry pretty quick (for oak) with the shapes you made 'em. Good job, GrJfer.