Category Archives: rocks

Pumice: Solidified Frothy Lava

Posted on February 10, 2012 by Rashid Faridi

Pumice is an igneous rocks which  formed when lava cooled quickly above ground.  Little pockets of air can be seen in the rock . This rock is so light, that many pumice rocks  actually float in water. Pumice is actually a kind of … Continue reading →

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Riverbed Carbon Stored in Ganges-Brahmaputra basin in India May be Very Old

Posted on November 11, 2011 by Rashid Faridi

The soils and sediments at the bottom of rivers are rich in organic material. They can store carbon for thousands of years according to a study from the Woods Hole Oceanographic Institution (WHOI). Despite often high rates of erosion and sediment … Continue reading →

Posted in Environment, Rivers, rocks | 2 Comments

Limestone

Posted on October 24, 2010 by Rashid Faridi

Limestone is an organic, sedimentary rock.It was formed from the remains of tiny shells and micro-skeletons deposited on the sea bed. They were compressed to form solid rock. Limestone is made up of calcium carbonate and reacts with diluted hydrochloric … Continue reading →

Posted in Landforms, Minerals, rocks | 7 Comments

Breccia

Posted on February 7, 2010 by Rashid Faridi

Breccia is a rock made of smaller rocks, like conglomerate. But breccia contains sharp, broken clasts while conglomerate has smooth, round clasts. Breccia (pronounced /ˈbrɛtʃiə, ˈbrɛʃiə/, Italian: breach) is a rock composed of angular fragments of minerals or rocks in a … Continue reading →

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