Generally, the stratigraphic base displays metamorphic rocks from the Cajamarca complex varying between amphibolic green schists, graphitic schists, phyllites and locally marble whose protolith age has been assigned to the early Palaeozoic (Figure 2).
Cajamarca Amphibolic green 2.75 0.00010 complex schists, graphitic schists, phyllites and marbles 3.
Hegel was perhaps the first to call our attention to a fundamental philosophical problem in this
amphibolic usage of the term "history." But, for Hegel, this convention is not so much a problem as it is a reflection of an underlying metaphysical truth.