- An Earthquake (also known as a quake, tremor or temblor) is motion of the Earth’s crust which occurs with a sudden release of energy that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane.Earthquake means the shaking of the Earth’s surface. It is a sudden trembling of the surface of the Earth. Earthquakes certainly are a terrible natural disaster. Furthermore, Earthquakes can cause huge damage to life and property. Some Earthquakes are weak in nature and probably go unnoticed. In contrast, some Earthquakes are major and violent. The major Earthquakes are almost always devastating in nature. Most noteworthy, the occurrence of an Earthquake is quite unpredictable. This is what makes them so dangerous.
- Saddle Mountain (Clatsop County, Oregon) (Wikipedia)
Saddle Mountain is the tallest mountain in Clatsop County in the U.S. state of Oregon. Part of the Oregon Coast Range, Saddle Mountain is in Saddle Mountain State Natural Area in the northwest corner of Oregon. The peak is listed on Oregon’s Register of Natural Heritage Resources.