Blue Lake crater, one of the least known Holocene volcanoes of the Oregon Cascades, is a series of at least three overlapping explosion craters along a NE trend slightly east of the crest of the Cascade Range.
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Geological SummaryBlue Lake crater, one of the least known Holocene volcanoes of the Oregon Cascades, is a series of at least three overlapping explosion craters along a NE trend slightly east of the crest of the Cascade Range.
During the dormant years, ground water percolated into the underground channels and mixed with the hot and possibly molten lava at depth. The resultant explosions caused the large craters that are obvious today, containing Blue, Valley and Browne Lakes.
The Blue Lake is known for its changing color, from grey to bright blue. Different dates have been given for its last eruption, of 28,000 years ago, 4300 years ago, and, recently, a little before 6000 years ago. If the youngest date is correct, this could be the most recent volcanic eruption on the Australian mainland.
Blue Lake / Warwar (The Blue Lake) is a large, monomictic, crater lake located in a dormant volcanic maar associated with the Mount Gambier maar complex.
These eruptions culminated 7,700 years ago in the largest explosive eruption in the Cascades during the past 1 million years, and one of the Earth's largest eruptions in the past 12,000 years (Holocene Epoch). Mount Mazama's climactic eruption produced the caldera where Crater Lake exists today.
Blue Lake / Warwar (The Blue Lake) is a large, monomictic, crater lake located in a dormant volcanic maar associated with the Mount Gambier maar complex. The lake is situated near Mount Gambier in the Limestone Coast region of South Australia, and is one of four volcanic crater lakes originally on Mount Gambier maar.
Blue Lake Regional ParkIt provides many wonderful opportunities for boating, fishing and swimming, and makes a beautiful backdrop for hundreds of family picnics, community events and special programs throughout the year.