Ukinrek Maars

The Ukinrek Maars are two phreatomagmatic vents that formed on

the north side of the Aleutian Range on a low area bordering the Bering Sea..

Ukinrek

The Ukinrek Maars are two Ukinrek Maars are two Ukinrek

The location of Ukinrek Maars

About Ukinrek Maars

•! Ukinrek Maars is actually a lot of volcanoes.

•! The western of the two is elliptical in shape and up to 170!m in diameter and 35!m deep. The east maar lies 600!m to the east and is circular and up to 300!m in diameter and 70!m deep. The east maar has a 49!m-high lava dome within the crater lake.

•! eruption March-April 1977

Some fact about Ukinrek Maars

•! have been named “Ukinrek Maars”, meaning “two holes in the ground” in Yupik Eskimo. The western maar formed at the northwestern end of a low ridge within the first three days and is up to 170 m in diameter and 35 m in depth. The eastern maar formed during the next seven days 600 m east of West Maar at a lower elevation in a shallow saddle on the same ridge and is more circular, up to 300 m in diameter and 70 m in depth. The maars formed in terrain that was heavily glaciated in Pleistocene times. The groundwater contained in the underlying till and silicic volcanics from nearby Peulik volcano controlled the dominantly phreatomagmatic course of the eruption.

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