- Geologic Map of the East Half of the Bellevue South 7.5’ x 15’ Quadrangle, Issaquah Area, King County, Washington
The Issaquah area includes several of the most outstanding geologic features of the eastern Puget Lowland region. Folds have warped thousands of meters of Tertiary sedimentary and volcanic rocks. Several hundred meters of both glacial and postglacial sediment have accumulated in a deep glacial trough, which is now partly occupied by Lake Sammamish but which was previously the conduit for massive volumes of meltwater during ice-sheet occupation and retreat. The eastern projection of an east-west-oriented crustal structure, which reflects Tertiary through Holocene fault displacement, extends across the eastern part of the map area.
- Acamar (stars.astro.illinois.edu)
ACAMAR (Theta Eridani). Eridanus, the River, the embodiment of the Greek’s “River Ocean,” unlike real rivers has two ends. It now terminates in the brilliant first magnitude star Achernar (Alpha Eridani), the name from an Arabic phrase that means “the end of the river.” But Achernar is too far south to be visible from Greece. The original end of the river was the star we still call Acamar, which derives from the same phrase and means the same thing.
- Renton Formation (Wikipedia)
The Renton Formation is a geologic formation in Washington (state) within the Puget Group. It preserves fossils dating back to the Paleogene period.