Earth - Seismic, Tectonic, Faults, Earthquakes

Earthquake Intensity Scale

Earthquake Intensity Scales There are two primary methods of grading the intensity of an earthquake: Richter magnitude scale – assigns earthquakes a number between 1 and 10 in order of increasing intensity Mercalli intensity scale […]

Earth - Seismic, Tectonic, Faults, Earthquakes

Accretionary Wedge

Accretionary Wedge The significance of the Cascadia Subduction is that the Juan de Fuca plate is submerged under the coastal waters of the Pacific Ocean along the western edge of the North American Plate. A […]

Earth - Seismic, Tectonic, Faults, Earthquakes

Geological Term Glossary

Miscellaneous Geological Terms   Taken from: The Glossary of Geology (1980) Basin = A low area in the Earth’s crust, of tectonic origin, in which sediments have accumulated, e.g. a circular centrocline such as the […]

Earth - Seismic, Tectonic, Faults, Earthquakes

North American Craton

The North American Craton Taken from: The Glossary of Geology (1980) Craton = A part of the Earth’s crust that has attained stability, and has been a little deformed for a prolonged period. As originally […]

Earth - Seismic, Tectonic, Faults, Earthquakes

The Cascadia Subduction Zone

The Cascadia Subduction Zone Executive Summary: The significance of the Cascadia Subduction is that the Juan de Fuca plate is submerged under the coastal waters of the Pacific Ocean along the western edge of the […]

Earth - Seismic, Tectonic, Faults, Earthquakes

Seismic Terms Explained

Seismic Terms Explained Understanding Seismic activity requires a basic understanding of nomenclature (names/terms). If you understand the meaning of the terms otherwise complicated sounding reports and warnings about seismic activity are reasonable simple. Click on […]

Earth Tectonic Plates
Earth - Seismic, Tectonic, Faults, Earthquakes

Tectonic Plates Explained

The Earth’s Crust is a Conglomeration of Several Tectonic Plates The earths crust is broken up into several large pieces that are referred to as plates. The plates carry continental (land), oceanic (under sea) or […]

Earth - Seismic, Tectonic, Faults, Earthquakes

Seismic – Top

Seismic Activity and The Effect on Our World & Survival Seismic activity; the most common form of which is an earthquake, is often, but not always related to volcanic activity. Both types of events have […]