I'm not sure, I would assume that it is a shader network. I only know that all of these textures were made in Maya. First I created two lambert shaders and painted the polar caps and sea on one and then the land masses on another. Then I created a third shader and attached a layered texture on it and plugged the two painted textures into it's alpha channel, which I then proceeded to use white for the polar caps, ocean shader on another layer and then I used a combination of Stucco, Mountain and Rock textures. Does this count as a network?