| Location (formal name) |
Extent (km2) |
Age (Ma) |
|---|---|---|
| Svalbard (Diabasodden Suite) |
750,000 | 124.5 |
| Franz Josef Land | 116.5 | |
| Barents Sea | 15–20,000 | Unknown |
| Canadian Arctic Archipelago, Queen Elizabeth Islands (Sverdrup Basin Magmatic Province) |
550,000 | 90–130 |
| Peary Land, Northern Greenland (Kap Washington Group) |
80,000 | 130–80 |
| Alpha Ridge, Amerasian Basin | 200,000 | 97–79 |
| De Long Islands/Bennett Island | 228 | 124–109 |
The High Arctic Large Igneous Province (HALIP) is a Cretaceous large igneous province in the Arctic. The region is divided into several smaller magmatic provinces. Svalbard, Franz Josef Land, Sverdrup Basin, Amerasian Basin, and northern Greenland (Peary Land) are some of the larger divisions. Today, HALIP covers an area greater than 1,000,000 km2 (390,000 sq mi), making it one of the largest and most intense magmatic complexes on the planet. However, eroded volcanic sediments in sedimentary strata in Svalbard and Franz Josef Land suggest that an extremely large portion of HALIP volcanics have already been eroded away.[2]