Geology And Geophysics
By: John Jacob Smith
Throughout history and in present times, limestone has been used for a variety of purposes. The use of limestone on a large scale has been dated back to the construction of the Great Pyramid of Giza (c. 2560 BC). First of all, one of the...
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By: Terrence Aym
During mid-April 2011 the United States saw an increase in superstorms.And as the storms worsen thousands may die.The monster storm that pummeled 14 states during a 72-hour outbreak generated winds clocked at more than 100mph in some regions and spawned an incredible 266...
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Magnetic driven superstorms could kill thousands
By: Skye Martin
Scientists have been aware for some time that the earth’s magnetic poles shift. Most people do not realize that the magnetic poles are not the same as the geographic poles. While geographic poles are the two points where Earth’s imaginary spin axis passes...
By: Michael Totten
Earth's magnetic poles are on the move. The North Magnetic Pole is moving from northern Canada towards Siberia at a rate of between 34 and 37 miles per hour, and its speed is increasing. At the beginning of the 20th century, it only moved at...
By: B. J. Deming
To most people, a dangerous volcano is the one that’s currently on the news or has just erupted nearby; however, insurance risk experts and scientists use objective criteria to identify the worst threats, even if the volcano might not be erupting just now. &diams...
By: Robert Naylor - 598710
The discovery of metals was one of the major turning points of human civilization, carrying the species from the uncomfortable stone age into the glorious days of Bronze. Copper, zinc, and nickel have accompanied man since those early days, forming everything from weapons to pottery...
By: Norman Green
All rocks are aggregates of minerals, and are classified as either of igneous, sedimentary or metamorphic origin. Sedimentary rocks are formed when minerals are deposited and then accumulate to form the rock. The type and characteristic of each sedimentary rock depends upon its mineral content...
By: Darren Owen
The geology of the earth can be a fascinating subject for people to study. Formed from the remains of other eroded rocks, sedimentary rocks have been studied ever since geology began. Only about 5% of the earth’s lithosphere is sedimentary but because they are...
Common uses for limestone
By: B. J. Deming
Limestone is a calcium-based rock that has many uses in daily life. As a construction stone, it may decorate the facade of the office building or school that you are sitting in right now, and form the retaining wall around its parking garage and lawn...
A guide to active volcanoes around the world
By: B. J. Deming
Some of the most beautiful places in the world owe their existence to volcanoes. The lush greenery of Hawaii, for instance, thrives in soil that formed in fire, as the incandescent glow from Kilauea’s ongoing eruption reminds us. Eruptions that are more explosive, like...
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