Abstract Landscapes

Can a landscape photo be abstract? Dictionary.com has this definition of abstract: "thought of apart from concrete realities, specific objects, or actual instances: an abstract idea." Is a photograph of something that exists then abstract? Look at these photographs and see what you think:

Without getting too deep here, we like the way a camera and lens can isolate elements of a larger scene. Sometimes it is just about lines or shapes or colors or textures. Or maybe just sleep deprivation.