drive by wood score - help identifying

Just driving down the street and saw an enormous pile on the ground near the road for the taking in the suburbs again. i only selected rounds to perfect size with no knots (getting picky w wood plentiful around here). So i looked way up the 5 foot diameter trunk that remained and the leaves at the top kinda looked like oak, but it was difficult to tellL for sure. Anyways, after filling the truck bed, my hands smelled similar to a maple score from months back. Is that the smell of the green lichens? The rounds on top are from today (confirmation of oak?) . i know it def wasnt pin oak from the trunk. bottom rounds are elm and sycamore.

also, i was going to wait and split these rounds in spring of 2015 since im wwway ahead right now. any thoughts on waiting to split? thx in advance.

Than thanks for the guesses guys. Appreciate the help. I will take closer pictures in a few weeks when I'm back there.

Reason I don't want to split is because I've run out of space and I'm now storing on a large family owned property in mid-state PA that is unattended 99% of the time. I figured the liklihood of having large rounds stolen is much, much lower than than split stacked wood stolen.

From an economics standpoint: The value in the wood is in the labor and process, or the cutting, drying, splitting, and stacking. The large rounds were free and only have the 'cutting' aspect of value, therefore its fairly low. If someone does steal it, I want lose any sleep.

Also, this property is located in an area where camping and campfires are frequent. therefore, some hunter/camper who comes across the stack might be tempted to grab a few sticks to beef up the fire. If I spend the time an labor increasing the value of this stack and some of it is stolen, I might lose an hour or two of sleep.