Month: June 2015

6 PROCESSES OF PHYSICAL /MECHANICAL WEATHERING

6 PROCESSES OF PHYSICAL /MECHANICAL WEATHERING

Mechanical/physical weathering is any of the various weathering processes that cause physical disintegration of the exposed without any change in the chemical composition of rocks. The following are 6 processes of physical/mechanical weathering. Frost action (freeze/thaw effect) – this is breaking of rock due to pressure exerted by freezing water into rock cracks or joints. …

6 PROCESSES OF PHYSICAL /MECHANICAL WEATHERING Read More »

5 PROCESSES OF CHEMICAL WEATHERING

Weathering is the breakdown of rocks at the earth’s surface, by action of rain water, extremes of temperature and biological activities. It does not involve the removal of rock materials. Chemical weathering is the weakening and subsequent disintegration of rock by chemical reactions.  The following are 5 processes of chemical weathering Hydrolysis, this is chemical breakdown …

5 PROCESSES OF CHEMICAL WEATHERING Read More »

5 CONDITION FOR EXISTENCE OF CORAL REEFS

Corals is limestone rock made by accumulation of skeletons of tiny marine organisms called coral polyps. Reefs are shallow, mostly submarine features, build primarily by colonies of living marine organisms, including corals, sponges and shellfish. Coral reefs occur only in the places coral polyps can survive and thrive .   The following are five conditions which …

5 CONDITION FOR EXISTENCE OF CORAL REEFS Read More »