GRADE DISTRIBUTION OF THE GIANT OK TEDI Cu-Au DEPOSIT, PAPUA NEW GUINEA—A REPLY

摘要

We welcome the contribution of Pollard (2014) to van Dongen et al. (2013). Pollards main comment is that his observations at Ok Tedi imply a "very different picture of the relationships between intrusive rocks, host rocks, and mineralization" than the one we proposed. We would argue that his observations are actually broadly consistent with our model, but our interpretation was more concerned with the deposit-scale picture, as this better served the main aims of our paper. One of our primary aims was to present a 3-D geologic model and grade distribution images, as this is rare in Economic Geology. Our second aim was to concisely point out the link between the skarn and the porphyry system and our ideas as to how this might have been controlled by host rock distribution.