Metamorphic rocks: Marble
By: Wayne K. Wilkins
Marble is one of the most widely used and widely distributed rocks in the world. Not only is marble used for expensive flooring within homes, but it is also used to tile walls and even to create fireplaces, ornaments and a vast array of other...
New African water source found in Namibia
By: Sun Meilan
It is well know that water resources in Africa are scarce; according to a BBC article, there are about 300 million people across the country who don’t have access to safe water. In Namibia, a country that is largely made up of desert and...
By: Mari Mckee
Slate is a metamorphic rock. A rock that undergoes great heat and high pressure is changed into a metamorphic rock. The original rock was deep in the earth where it was exposed to magma which produces heat up to 800 degrees Celsius. Pressure comes from...
By: Brian Juma
Igneous rocks are among three main classes of rocks, the others being sedimentary and metamorphic. The igneous rocks are formed through cooling and solidification of magma or lava. Pegmatite, which is the focus of this article, falls in the category of igneous rocks and is...
By: J. Lang Wood
Many places on the planet experience earthquakes, either on a regular basis or infrequently. Earthquakes occur in specific areas of the Earth’s crust where “faults,” or cracks lie. These faults experience changing temperatures and pressures within the layers of the Earth that...
By: Hai Shunxi
Earth scientists classify igneous rocks, those which have cooled from molten magma, based on the minerals present and the size of the mineral crystals. The typical igneous rock is either made of crystals too small to identify with the naked eye, such as basalt; or...
By: Mari Mckee
Phyllite or “leaf stone”, is a metamorphic rock made of mostly fine grained mica. Phyllite’s protolyth, or parent rock,is shale. Millions of years ago, shale was exposed to the heat of magma (up to 800 degrees Celsius) and to the pressure of...
Metamorphic rocks: Marble
By: Hortense Foster
Nature made marble is a rock created by a metamorphism process of sediment carbonate rocks, such as limestone and dolomite rocks. When this change occurs, a recrystallization of the original rock occurs. The marble name was created from the Greek word Marmaton which is from...
Metamorphic rocks: Schist
By: Anja Poulsen
Schists are a group of metamorphic rocks which are medium to coarse-grained and of a fissile nature, meaning that at least one of the minerals in the rock crystallizes in platy form. Because of this, schists will split easily along these parallel layers. In fact...
Metamorphic rocks: Slate
By: Anja Poulsen
Slate is a durable, attractive and useful type of rock that is mined in countries all over the world, including the US, Brazil, and China, as well as in Europe and most recently, in Australia. Slate is a metamorphic rock, which means it was formed...

 

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