Tree ID please

This tree is near Fort Davis , Texas and shot in January.
Is it a cottonwood or Oak??
Thanks in advance

Awefully difficult to judge from this perspective. Need to see either bark or leaf detail. Standing out in the open like that and subject to wind etc. the shape could be about anything. But given those two choices and a gun held to my head to pick, I'd go with cottonwood.

I lived in TX for eleven years, eight months, three wweks, and two days, and that's an old mesquite until proven otherwise.
Dave Graham, east River, SD

David,
A mesquite tree it is not. They grow only to a much, much shorter. It is a Cottonwood I believe..

Thanks for your comment, Rick, but without a scale of size I can attest that its conformation is that of several venerable mesquites I've seen and identified by pod and foliage in summer in Brazos, Bexar, and one down in Val Verde County. I suggest that if you want a quick way to assure that it's oak or to rule out oak without being a dendrologist wih bark and bud savvy, check for remnants of mast inder the tree. Even if t
here are lots of wild turkey in the area, there still will be some mast as close the center as you can get from the drip line.
Dave Graham, East River, SD