Columbia River Basalt Group
- San Juan County — Thumbnail History (historylink.org)
Accessible only by water or air, San Juan County is an archipelago of hundreds of islands, reefs, and rocks between mainland Washington and Vancouver Island. Around 20 islands are inhabited. The largest three – Orcas, San Juan, and Lopez – contain most of the land area and nearly all the population. Only in 1872, later than any other area in the 48 contiguous states, did the San Juan Islands become an undisputed part of the United States following the “Pig War” boundary dispute with Great Britain. San Juan County was created the next year…
- On the west side of the Cascade Mountains, two lobes covered the Puget Lowlands. Along the north side of the Olympic Mountains the Juan de Fuca Lobe moved west, and between the Olympics and the Cascades the Puget Lobe moved south.
- Cytisus scoparius has been introduced into several other countries and continents, outside of its native range, and is commonly classified as a noxious invasive species in western North America, mainly in British Columbia (including on Vancouver Island), California, Oregon, Washington (west of the Cascades), the Sierra Nevada range, fragmented areas of North America’s eastern seaboard, as well as Australia (where it is a declared weed), New Zealand, and in India.
- The Marysville skyline is dominated by views of Mount Pilchuck and the Cascade Mountains to the east and the Olympic Mountains to the west.
- Mount Baker (usgs.gov)
- Cascade Range (Wikipedia)
The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as many of those in the North Cascades, and the notable volcanoes known as the High Cascades. The small part of the range in British Columbia is referred to as the Canadian Cascades or, locally, as the Cascade Mountains. The highest peak in the range is Mount Rainier in Washington at 14,411 feet (4,392 m).
