Mistastin crater
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| Impact crater/structure | |
|---|---|
| Confidence | Confirmed |
| Diameter | 19 kilometres (12 mi) |
| Age | 36.4 ± 4 million years old (Eocene Epoch) |
| Exposed | Yes |
| Drilled | Yes |
| Location | |
| Location | Labrador, Newfoundland and Labrador, Canada |
| Coordinates | 55°53′N 63°18′W / 55.883°N 63.300°WCoordinates: 55°53′N 63°18′W / 55.883°N 63.300°W |
 Mistastin crater
Location of the Mistastin crater in Labrador
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| Topo map | Canada NTS 13M |
| Mistastin Lake | |
|---|---|
| Coordinates | 55°53′N 63°18′W / 55.883°N 63.300°W |
| Type | impact crater lake |
| Basin countries | Canada |
| Max. length | 19 km (12 mi) |
| Max. width | 12 km (7.5 mi) |
| Surface area | 145 km2 (56 sq mi) |
| Surface elevation | 338 metres (1,109 ft) |
| Islands | Horseshoe Island |
Mistastin crater is a meteorite crater in Labrador, Canada which contains the roughly circular Mistastin Lake.
The lake's arcuate central island is interpreted to be the central uplift of the complex crater structure. The target rocks were part of a batholith composed of adamellite, mangerite and lenses of anorthosite. There are abundant shock metamorphic features exhibited in the rocks of the island. Planar deformation features, diaplectic glass, melt rocks, and shatter cones have been identified.
The lake is approximately 16 km (9.9 mi) in diameter, while the estimated diameter of the original crater is 28 km (17 mi). The age of the crater is calculated to be 36.4 ± 4 million years (Eocene).
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