Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.
| Tract name | Deposit type | Geology |
|---|
| Late Continental Arc | porphyry copper | Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Oligocene-Pliocene) |
| Intermontane Island-Arc | porphyry copper | Porphyry Cu systems associated with pre-accretionary Triassic and Jurassic calc-alkalic island arcs that formed offshore of western North America |
| Intermontane Island-Arc Cu-Au | porphyry copper | Triassic and Jurassic alkalic igneous rocks of accreted island arcs that formed offshore of western North America |
| Insular Mixed Island- and Continental Arc | porphyry copper | Calc-alkalic igneous rocks of accreted Jurassic island-arc terranes |
| Cordilleran Continental Arc | porphyry copper | Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Jurassic-Eocene) |
| Southeast Alaska Tertiary | porphyry copper | Tertiary subduction and postsubduction calc-alkalic plutons of southeast Alaska |
| Alaska Peninsula and Aleutian Islands | porphyry copper | Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands |
| Pacific Margin | porphyry copper | Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia. |
