- Round Lake, like its larger neighbor Lacamas Lake, is a child of the Missoula Floods, a depression carved when ice dams collapsed somewhere in northern Montana over 12,000 years ago and swept down through the Columbia River valley. The floods were not a single event but occurred at least 40 times over a period of 2,000 years. A “Missoula boulder,” perhaps rafted down the cataclysmic spate on a floe of ice, sits at the south end of Round Lake…
- G-type star (Wikipedia)
G-type stars, including the Sun, have prominent spectral lines H and K of Ca II, which are most pronounced at G2. They have even weaker hydrogen lines than F, but along with the ionized metals, they have neutral metals. There is a prominent spike in the G band of CN molecules. Class G main-sequence stars make up about 7.5%, nearly one in thirteen, of the main-sequence stars in the solar neighborhood. There are 21 G-type stars within 10pc.