Columbia River Basalt Group
eastbound on Interstate 90
- Tolmie, William F. (1812-1886) (historylink.org)
Dr. William F. Tolmie played a significant role in the Puget Sound region as it came under United States jurisdiction and Washington Territory was created. A young Hudson’s Bay Company (HBC) clerk and surgeon, Tolmie participated in the 1833 establishment of Fort Nisqually (in present-day DuPont), the first non-Native settlement on Puget Sound. During his early years in the Northwest Tolmie kept extensive journals describing the region’s land, peoples, and cultures. He collected plant and animal specimens and cultural artifacts for scientists in England. He returned to Fort Nisqually in 1843, taking charge as it transitioned from fur-trading outpost to center of extensive farming operations under HBC subsidiary Puget Sound Agricultural Company (PSAC). Tolmie followed the British company’s policy of friendly, cooperative relations with Native tribes and attempted the same with the growing number of American settlers. This proved increasingly difficult as settlers encroached on company farmlands and American efforts to confine tribes on small reservations led to war in 1855-1856, with Tolmie and HBC caught in the middle. In 1859, with PSAC transferring more operations from American territory to Vancouver Island, Tolmie moved to Victoria, where he took charge of PSAC farms on the island.
- 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.
- Columbia River Basalt Group
- Northwest Waterfall Survey
The Pacific Northwest is home to more Waterfalls than anywhere else in North America. The Northwest Waterfall Survey was founded in order to create a thorough inventory of these outstanding natural features.
- Idaho (Wikipedia)
Idaho (/ˈaɪdəhoʊ/ EYE-də-hoh) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. The state’s capital and largest city is Boise. With an area of 83,570 square miles (216,400 km2), Idaho is the 14th largest state by land area, but with a population of approximately 1.8 million, it ranks as the 13th least populous and the 7th least densely populated of the 50 U.S. states.
