MindlessCollar842

MindlessCollar842 t1_je5as5e wrote

It is not an easy subject to learn without foundation, and it looks like you may be confusing a few different subjects. We know quite a bit about the composition of the mantle. We can't drill to those depths, but it finds its way up (see: mantle xenoliths, ophiolites). Determining parentage and provenance of a magma body through chemistry is one of many applications of igneous petrology. If you would like references on mantle dynamics/geochemistry, please DM, I am happy to share.

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