By: Michael Totten
Natural gas liquids (NGLs) are playing a greater economic role than ever before. In 2010, domestic production of NGLs reached 2 million barrels per day. Major NGLs The 4 primary NGLs in the U.S. market are ethane, propane, butane, and iso-butane. Ethane accounts for...
By: Hai Shunxi
Obsidian is natural glass created by rapid cooling of molten rock, or magma, associated with volcanoes. This "chilling" prevents crystallization of the minerals that make up most other rocks formed by volcanic activity. As a result, obsidian does not have a grainy appearance like other...
By: Collin Richards
Along the Northeastern US and parts of Canada is a low lying, rugged, and vast mountain range called the Appalachian Mountains. This ancient mountain range isn't famous for extremely tall mountains, but it is significant because it covers a large area of over 700,000...
The varieties of obsidian
By: Andrea Theisson
Obsidian is an igneous rock, formed when lava cools very quickly, which disallows the formation of any crystalline structures. Vitreous, it is a glass-like rock which takes several forms depending upon the minerals in the base. It is extremely durable and known for keeping an...
Geological processes that occur within Earth's interior
By: Charles Ray
The earth is hurtling through space in its orbit around the sun at a speed of some 67,000 MPH, and rotates on its axis at a speed of over 1,000 MPH at the equator. Yet, someone standing on the equator would hardly...
By: Dr. Bryan Katz
The Earth is a terrestrial planet consisting of a crust, mantle, molten outer core, and solid inner core. The Earth’s crust is rich in silicon, aluminum, and other elements less massive than iron. Most of the Earth’s iron and heavier elements are located...
By: Shannon Farlouis
The Appalachian Mountains have a long history that dates back to the early 1500s. The birth of these mountains began about 480 million years ago. Scientists have found that a collision of continents is what formed these mountains. When the mountains were first formed, they...
By: Dr Pandula Siribaddana
Minerals can be defined as solid chemical substances, which have their own chemical characteristics, atomic structures and physical properties. They can be found everywhere in the world and their formation is dependent upon natural biogeochemical processes. However, it is only in a few places where...
Three main types of meteorites
By: Michael Prather - 660563
It is often said that the greatest stories are written in the stars. Yet there is an even greater story which can be found much closer. It is the story of the birth of this solar system. The clues to this amazing story are found...
By: Michael Totten
There are 6 main types of hazards from volcanic eruptions: lava flows, poisonous gases, ashfalls, pyroclastic flows, lahars, and volcanic debris avalanches. Each of these hazards requires different emergency protocols. Most volcanoes are only capable of 3 or 4 of these hazards, or rarely just...

 

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