Click on a named quadrangle in the map above to see the geology map for that area
Each Quadrangle is 1° of Longitude by 30 minutes of Latitude (approximately 40 × 30 nautical miles)
San Juan Islands Map is Approximately 33 × 24 nautical miles

Note: This site is designed for high-speed connections at 1024x768 or higher resolution
Tested with INTERNET EXPLORER 6 and NETSCAPE 7
Designed and Built by Christopher Heg using GRASS GIS and Spider Writer
Send comments to wa_geology@comcast.net    Click here to visit my home page

Ilwaco Westport Copalis Beach Forks Cape Flattery Astoria Chehalis Shelton Mt. Olympus Vancouver Port Angeles Mt. St. Helens San Juan Is. Centralia Tacoma Seattle Hood River Port Townsend Mt. Adams Bellingham Mt. Rainier Snoqualmie Pass Skykomish Goldendale Sauk River Toppenish Mt. Baker Yakima Wenatchee Chelan Twisp Hermiston Richland Robinson Mtn. Priest Rapids Moses Lake Banks Lake Omak Oroville Walla Walla Connell Ritzville Coulee Dam Nespelem Republic Clarkston Pullman Rosalia Spokane Chewelah Colville