1. BTW, "pure" textures almost never form a successful abstract. And even though I cautiously say "almost", I am in fact not aware of any... There has to be a color spot, a shape thrown in, or something else standing out.
Very much like that single building among poplars that you mention.
(Quoted from Zorki5)
2. "However, I'd have imagined it to be more about textures and colour blocks as distinct from shape in the sense of accurate renditions of absolute physical form."
That's what I was saying...
(Quoted from myself)
There's something here, from about 23:49 to 27:15, from our own Peter, that touches on this:www.youtube.com/watch?v=PRsNaNM0ZeU
In fact, if you continue a few minutes more to the end, you'll find a lot that he says that is just as applicable to photography.