- Glacier Peak is one of the five volcanoes of the state of Washington, and is the highest mountain in Snohomish county. It has 7498 feet of prominence and ranks 5th highest on the Bulgar List (Washington Top 100). It is located in the North Central part of the Cascades which it has a wilderness named after this mountain which is called the Glacier Peak Wilderness. The Native Americans once called this peak Takobia which would translate to “The Great Parent”…
- Columbia River Basalt Group Stretches from Oregon to Idaho (usgs.gov)
The thick, layered lava flows of the CRBG erupted as flood basalts, which originate as some of the most highly effusive eruptions in the world. The CRBG sequence a classic example of flood basalt activity that erupted more than 350 lava flows from about 16.7 Ma to 5.5 Ma. The eruptions originated from a series of generally north-northwest-trending linear fissures, ranging from tens to hundreds of kilometers in length, located along the Washington/Oregon/Idaho border. The magma that fed these massive eruptions may have come from a plume-like upwelling from the mantle called a hot spot. Since the time of the CRBG eruptions, the North American plate has moved in a west-southwestwardly motion, and that hot spot is now believed to reside beneath Yellowstone volcano in northwest Wyoming.