- The Tonga Plate is a small southwest Pacific tectonic plate or microplate. It is centered at approximately 19° S. latitude and 173° E. longitude. The plate is an elongated plate oriented NNE - SSW and is a northward continuation of the Kermadec linear zone north of New Zealand. The plate is bounded on the east and north by the Pacific Plate, on the northwest by the Niuafo’ou Microplate, on the west and south by the Indo-Australian Plate. The Tonga plate is subducting the Pacific plate along the Tonga Trench. This subduction turns into a transform fault boundary north of Tonga. An active rift or spreading center separates the Tonga Plate from the Australian Plate and the Niuafo’ou microplate to the west. The Tonga Plate is seismically very active and is rotating clockwise.
- Snohomish County, Washington (data.census.gov)
Snohomish County, Washington has 2,086.5 square miles of land area and is the 13th largest county in Washington by total area. Snohomish County, Washington is bordered by Skagit County, Washington, Chelan County, Washington, Kitsap County, Washington, King County, Washington, and Island County, Washington.