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    Pangaea, Supercontinent   Pangaea, Supercontinent
Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It formed approximately 300 million years ago and then began to break apart after about 100 million years. Unlike the present Earth, much of the la...
 
    Eruption of Thera, Santorini   Eruption of Thera, Santorini
Thera, or the modern island of Santorini, located sixty-nine miles north of the island of Crete in the Aegean Sea, was devastated by a volcanic eruption sometime in the 15th century BC. The eruption was one the the most powerful in the past 10,000 ye...
 
    James Hutton, Father Modern Geology   James Hutton, Father Modern Geology
James Hutton was a Scottish physician, geologist, naturalist, chemical manufacturer and experimental agriculturalist. He is considered the father of modern geology. His theories of geology and geologic time, also called deep time, came to be included...
 
    Charles Lyell, Principles of Geology   Charles Lyell, Principles of Geology
Sir Charles Lyell was a British lawyer and the foremost geologist of his day. He is best known as the author of Principles of Geology, which popularised James Hutton's concepts of uniformitarianism the idea that the earth was shaped by slow-moving...
 
    Hayden, Founding of Yellowstone National Park   Hayden, Founding of Yellowstone National Park
Dr. Ferdinand Vandeveer Hayden was an American geologist noted for his pioneering surveying expeditions of the Rocky Mountains in the late 19th century. He was also a physician who served with the Union Army during the Civil War. In 1871, Hayden l...
 
    Yellowstone, First National Park in the World   Yellowstone, First National Park in the World
Yellowstone National Park is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872....
 
    Alfred Wegener, Discovery Plate Tectonics   Alfred Wegener, Discovery Plate Tectonics
German climatologist and geophysicist who, in 1915, published as expanded version of his 1912 book The Origin of Continents and Oceans. This work was one of the first to suggest continental drift and plate tectonics. He suggested that a supercontinen...
 
    Krakatoa Eruption, Indonesia   Krakatoa Eruption, Indonesia
Krakatoa is a volcanic island in the Sunda Strait between Java and Sumatra in Indonesia. It has erupted repeatedly, massively and with disastrous consequences throughout recorded history. The best known eruption culminated in a series of massive expl...
 
    San Francisco Earthquake of 1906   San Francisco Earthquake of 1906
The San Francisco earthquake of 1906 was a major earthquake that struck San Francisco and the coast of northern California at 5:12am on Wednesday, April 18, 1906. The most widely accepted estimate for the magnitude of the earthquake is a moment magni...
 
       
         



 
 
         
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