Barrier islands are formed by different mechanisms. There are various theories that are used in the explanation of barrier island formation but none can explain the formation of all the different types. One theory can describe the process of formation of a certain type of barrier island but may not fit the …
For a long, the idea of wearing a person wearing a birthstone that corresponds to a birth month had always been appealing. These birthstones are gemstones worn to denote the month of a person’s birth. While some select their stones based on the calendar month of birth, some of the stones could …
Minerals are naturally occurring inorganic solid substances. They are the building blocks of rocks. So it is impossible to have a rock without a mineral. Many of the minerals commonly found in rocks include micas, feldspars, and quartz. These minerals could be made up of one element, or more elements. While it …
The Geologic Time Scale is a chart showing all the geologic events that have happened on earth and assigns a time to them. It is like the calendar of the earth grouping major occurrences based on the time in history they happened. What is the Geologic Time Scale? The geologic time scale …
Vulcanicity Definition Vulcanicity refers to the rising of molten magma or other gaseous materials beneath the earth’s crust on the surface or within the earth’s crust. Molten magma naturally escapes through cracks and fissures, hence vulcanicity is associated with areas that have experienced mountain building processes of compression and tension. Types of …
Definition of Volcano A volcano is defined as a hill or mountain that has an opening through which, ashes gases, cinder etc are forced out in an eruption; or a volcano is a landform that is created by the ejection of gases, lava, ashes and/or molten rock material which escaped through the vent and …
What is Erosion? Erosion is the wearing away of top soil or rock by rain, wind, sea/rivers or by the action of toxic substances. The primary effect of erosion is the reduction of topsoil thickness, which results in structural degradation, soil compaction, nutrient depletion, loss of soil organic matter, poor seedling emergence …
Earthquakes facts An earthquake is a sudden movements, vibration or oscillation in the earth crust caused by sudden release of heat and enormous pressure. There are three types of earthquakes namely: shallow, intermediate and deep earthquakes. The point at which the earthquakes originates is called focus while the point on the earth …