Tips on Oak trees are dying why?

[CK1]

I'm trimming some oaks for a client. High tip area's on limbs are dying. I removed such a tree last year, another just this week, that was bout 20 ft from the oak I removed last year. I think these are pin oaks(?). Any ideas on the why or what disease this might be? Thanks.

Clay


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[forestryworks]

None of those in the pics are pin oaks.

 

[CK1]

First photo is different oak, other two photos are of another oak.

 

[buzz sawyer]

Leaves resemble Live Oak but I'm not sure.

 

[Ed Roland]

Pictures are very typical of abiotic damage, ie construction. Lichens are not harmful to the tree but an abundance does indicate very slow growth.

Look to the roots for causal.

 

[sgreanbeans]

Looks like a laurel oak,Quercus hemisphaerica

 

[limbwalker54]

I'll second the Laurel Oak.
However it seems I would think it would be the Quercus laurifolia due to the leaf shape and color. If that is the case, are you noticing discoloration of the leaves from the main vein as though someone hit it with a lighter? Several possibilities for decline here.....need more info.