Gakkel Ridge Caldera
Ancient volcanic megacaldera
From Wikipedia, the free encyclopedia
Gakkel Ridge Caldera, also known as Gakkel Caldera, is a Pleistocene volcanic caldera located on the Gakkel Ridge beneath the Arctic Ocean, off the northern coast of Siberia. It erupted approximately 1.1 million years ago, with an estimated eruptive volume of 3,000 km3 (720 mi3). This eruption places it at VEI-8 on the Volcanic Explosivity Index, making it one of the most explosive volcanoes on Earth during the Pleistocene along with Yellowstone Caldera and Lake Toba. It is the only known supervolcano located directly on a mid-ocean ridge.[1]
| Gakkel Ridge Caldera | |
|---|---|
Gakkel Ridge Caldera is a noticeable oblong hole-like depression in the Gakkel Ridge, located in the upper right part of this map. | |
| Highest point | |
| Coordinates | 81°31′N 120°00′E |
| Dimensions | |
| Length | 80 km (50 mi) |
| Width | 40 km (25 mi) |
| Geography | |
 | |
| Location | Gakkel Ridge, Arctic Ocean |
| Geology | |
| Last eruption | 1.1 Ma |
