Category Archives: Landforms

Step By Step Formation of Waterfall

Waterfalls are made when a layer of harder rock overlays on a layer of softer rocks. As the river passes over the softer rocks it erodes faster, forming a step. Hydraulic action erodes and makes the plunge pool and notch … Continue reading →

Aside | Posted on March 19, 2013 by | Leave a comment

Extraterrestrial lakes

Posted on January 15, 2013 by

At present the surface of the planet Mars is too cold and has too little atmospheric pressure to permit the pooling of liquid water on the surface. Geologic evidence appears to confirm, however, that ancient lakes once formed on the … Continue reading →

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Oh!! Islands Are Dissolving from Within in Hawai

Posted on December 24, 2012 by

Soil erosion is the primary force that levels mountains, but now geologists have found that Oahu’s mountains are dissolving from within due to groundwater. Forecasting the island’s future also needs to account for plate tectonics. As Oahu is pushed northwest, … Continue reading →

Posted in Grounwater, Landforms, Mountains, opinions, topography, water | Leave a comment

Landforms:Alluvial Fan

Posted on October 2, 2012 by

An alluvial fan is a fan-shaped or cone-shaped deposit of gravel, sand, and smaller materials. When water flows down a mountain, it picks up sand and other materials from the mountain. When the water reaches the base of the mountain … Continue reading →

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Magma

Posted on September 27, 2012 by

Magma is molten, liquid rock found under the surface of the Earth. Magma can also contain crystals, rock fragments and dissolved gases. The liquid part of magma is called the melt. Earth is divided into three areas. The core is … Continue reading →

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Loess

Posted on February 4, 2012 by

Loess  is an aeolian sediment formed by the accumulation of wind-blown silt, typically in the 20–50 micrometre size range, twenty percent or less clay and the balance equal parts sand and silt  that are loosely cemented by calcium carbonate. It … Continue reading →

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Danxia:Colourful Landforms

Posted on January 14, 2012 by

This unique geological sight is known as Danxia landform. You can see it in few locations in China . This example is located in Zhangye, province of Gansu . Colour is the result of built up of million years of … Continue reading →

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Erosion to devour 3,000 hectares of land on riverbanks of Ganga,Jamuna and Padma this year in Bangladesh

Posted on July 27, 2011 by

Around 2,428 hectares of cultivable land and 413 hectares of settlement on the banks of Jamuna, Ganges and Padma rivers will disappear due to erosion this year.Bangladesh Water Development Board (BWDB) and Center for Environmental and Geographic Information Services (CEGIS) … Continue reading →

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