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The End Permian Mass Extinction
3,006 wordsIntroduction Think of a world which existed 290 million years ago. As you look out over the trade in front of you, you think that you are on an alien planet. You see volcanoes spewing ash and lava. Beside them is the ocean which is swarming with many different species of echinoderms, bryozoans and brachiopods. As you look down onto the sea floor you are amazed at the countless number of starfish and urchins. Some animals leave you can't even describe and you have no idea even what phylum they be...
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Oceanic Crust Mid Ocean
1,629 wordster> Describe the frequency, origin and distribution of earthquakes at mid-ocean ridges, ocean basins, subduction zones and continental shields. Earthquakes are happening almost everyday all over the world. Most of the time earthquakes are not strong enough to be felt by people, but the shaking caused by an earthquake is recorded by a seismogram. These are located all over the world at different points. Only occasionally will a larger magnitude earthquake strike and cause damage to the...
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Tectonic Plates Oceanic Crust
1,370 wordsThe core is divided into two parts, the solid inner core and the liquid outer core. The inner core is thought to be solid and primarily made up of iron and some nickel. The outer core is all around the inner core and is believed to be made up of liquid iron mixed with liquid nickel. The outer core is about 2890 to 5100 km. The inner core is 5100 to 6378 km. Earths mantle is mainly composed of substances high in iron and magnesium. The melting point of every substance depends on the pressure and ...
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Oceanic Crust Ocean Basins
1,875 wordsThe Cordilleran Orogeny The earths lithosphere can be divided into two major structural features: ocean basins and continents. Ocean basins, as we discussed in another essay, are formed at spreading ridges and consumed at subduction zones. The continents are a different story. How did the continents originate, and how have they changed over time? The origin of the earliest continental crust is still relatively obscure, but the evolution of the continents over time is not: the continents have cle...
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Noahs Ark Persian Gulf
6,495 wordsSkeptical view of the flood myth As skeptics have long been aware, there was no global flood in the last 5000 years, a boatload of animals did not ground on so-called Mount Ararat or on any mountain, and the worlds animals are not descended from two or seven pairs of each species that lived during the third millennium BC. Nor is there any archaeological proof that a man survived a flood by being on a boat loaded with animals, food, and drinking water. The Noahs Ark book summarized here does not ...
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Plate Tectonics Ocean Basins
530 wordsPlate Tectonics is theory of global tectonics (geologic structural deformations) that has served as a master key in modern geology for understanding the structure, history, and dynamics of the earths crust. The theory is based on the observation that the earths solid crust is broken up into about a dozen semirigid plates. The boundaries of these plates are zones of tectonic activity, where earthquakes and volcanic eruptions tend to occur. Plate Tectonics also are the cause of major features that...
Free research essays on topics related to: million years, plate tectonics, red sea, continental, ocean basins
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