- Brighton Beach is a neighborhood on Lake Washington in southeast Seattle. It is just south of the Bailey Peninsula (home to Seward Park) and extends from the lake over Graham Hill, across the Rainier Valley, and up the side of Beacon Hill, generally between S Othello Street on the south and S Orcas Street on the north. English immigrants who purchased lots there in the 1880s named the neighborhood for a resort town in England. Before that the area had been home to Duwamish Indians who had a village called hah-HAO-hlch (“forbidden place”) just south of Bailey Peninsula, and then to settlers who logged the huge trees, built farms, orchards, and a schoolhouse, and platted house lots.
- Tukwila Formation—Andesitic to dacitic volcanic sandstone, siltstone, shale, tuff-breccia, tuff, volcanic mudflow (lahar), carbonaceous shales, and minor lava flows or sills. Typically massive; only local sedimentary interbeds indicate structure. K-Ar age on plagioclase from tuff-breccia at top of unit, about 3 km west of quadrangle, yielded an age of 42.0±2.4 Ma (Turner and others, 1983)