The conception of close reading that is embodied in the Common Core standards is the one drawn from literature. However, it is not a particularly doctrinaire version of the concept, so it really can be applied across the curriculum, though it will require a bit of stretching here and there. There is more need for stretching with some texts than others. For example, in some ways a literary close read is sort of an attempt to read stories and poems in the way mathematicians read math, so math reading wouldn't require much of an adjustment. However, history reading tends not to be so single text focused so some variation is in order.
One basic idea often stressed in discussions of close reading is that the teachers' role is to ask questions about the text. However, let's not take that too literally. That could be questions that guide a discussion, but it also could be tasks that require students to analyze the same information, such as a writing assignment or some other kind of task, like the one in the attached Powerpoint. I was asked by Lesley Morrow (Rutgers University) and the New Jersey ASCD to speak to a group of New Jersey educators about informational text and close reading. Here is the presentation.