I see the core sample as offering a number of formats. The first is the linear whole of the core sample.
Then there is the slice through a part of the core which provides a disc format.
Then, within the slice there is disjointed text, images and possibly music notation (if a set of music encyclopaedias or a stack of sheet music was cored).
Below is a music box disc – a precursor to the juke-box
It reminds me of X-ray crystallography images such as this: