Geological setting of Late Triassic porphyry CuAu
Porphyry copper style mineralization at Miner Mountain is associated with dioritic intrusions in a predominantly sedimentary arc flank setting, not a predominantly volcanic arc axial setting as has commonly been assumed. It is generally difficult to distinguish epiclastic and pyroclastic (or even flow) units, particularly where altered. Nonetheless, argillaceous beds, limestone layers, and