Images of mudboils
|
|
|
|
| Image 2 (left). An aerial view of a 1973 tundra wildfire near Kaminak Lake, Nunavut, shortly after being extinguished. This glacial till plain is densely ornamented with mudboils. The rims of many of the mudboils have burned, while the centers were unburned, leaving behind a ring of boulders, ash, and baked fine sediments. Photo courtesy of Ross Wein, Natural Resources Canada, Geological Survey of Canada [68]. | |
| Image 3 (top right). A ground view of the burned mudboils shown in Image 2 [67]. The centers of mudboils are mineral soil with only scattered plants [91]. The turf fringes around the mudboils were 0.5- to 1.0 m-tall ridges of vegetation which enclosed and hid the boulders that were exposed by burning. The burned borders of the mudboils now form depressions, along which surface drainage is focused. Photo courtesy of William Shilts, Natural Resources Canada, Geological Survey of Canada [67]. | |
| Image 4 (bottom right). A close-up view of a burning turf ring around a mudboil. This fire burned "slowly and at high temperatures". Photo courtesy of William Shilts, Natural Resources Canada, Geological Survey of Canada [69]. | |