By: Christa Martin
Volcanoes have inspired fear, awe and wonder in societies through the history of mankind. They are among the most dramatic natural phenomena on Earth, and until last century, how and why they existed were mysteries to humanity. To understand how volcanoes are formed, it is...
How diamonds form
By: Kristen O'Riordan
The mysteries of diamonds mean different things to different people. The desire to find and own diamonds create questions of where diamonds come from and what makes them so special. The 4C's are truly dependent on nature and only form under specific environmental conditions. Thanks...
By: B. J. Deming
The Earth is so much bigger than us—it’s hard to get a sense of its scale. A good example of this is the difficulty in picturing the volcanic caldera in Yellowstone National Park that underlies all the geysers and hot springs there. Public...
By: Joshua Horn - 257112
Fossilization is the process by which biological remains are preserved for long periods of time. The resulting fossils are good records of life from a specific place and/or period and provides archaeologists with the necessary artifacts to understand the biodiversity of Earth today and throughout...
By: Irini Kotroni
Gemstones are classified into two categories, precious and semi-precious stones. Traditionally the common precious stones are diamonds, rubies, sapphires and emeralds. This classification dates back to ancient times and is based on the rarity and beauty of the stones. Precious stones are usually more expensive...
By: Terrence Aym
NASA has been warning about it…scientific papers have been written about it…geologists have seen its traces in rock strata and ice core samples… Now "it" is here: an unstoppable magnetic pole shift that has sped up and is causing life-threatening havoc with the...
By: Jason Westley
Our planet is a complex object. Its composition is varied, and the processes which drive change are unpredictable. The distance from the surface of the earth to its centre is over 6000 kilometres and mankind has succeeded in drilling just 0.2 percent of this...
Ancient myths of a hollow Earth
By: Gary Wonning
The Land Before Time Volumes have been written concerning the search for the inner earth or the land before time. Articles have been written in which it is stated that explorer Admiral Byrd and others have encountered a hole in the earth's surface at the...
By: Stephanie Fehr
A geode is a hollow geological rock formation found in volcanic or sedimentary rocks. Crystals form inside rock cavities or vugs. Many geodes are spherical in shape. A vug forms along fissures, rather than the spherical formation. The exterior is commonly limestone and the inner...
By: Jennifer Watson - 582581
Geodes are geological rock formations. They occur in both sedimentary and certain types of volcanic rocks. Geodes are vugs (a small cavity or hollow space inside a rock). They have concentric banding which means they share a common center. They also have internal crystal formations...

 

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