- The Ectasian Period (from Ancient Greek: ἔκτασις, romanized: éktasis, meaning “extension”) is the second geologic period in the Mesoproterozoic Era and lasted from 1400 Mya ago to 1200 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically.
- West Tiger Mountain Natural Resources Conservation Area (dnr.wa.gov)
Located in western Washington state, West Tiger Mountain Natural Resources Conservation Area (NRCA) is about 35 miles east of the city of Seattle. The area is part of a chain of Cascade Mountain Range foothills known locally as the “Issaquah Alps,” which includes Tiger, Squak, and Cougar Mountains.