Earth’s tectonic plates. Because of the pressure within the crust increases slowly over hundreds of years and finally exceed the strength of the plates‚ earthquakes take place. Human activities can also be the cause of significant earthquakes. Human beings carried out many activities that increase stress in the earth’s crust which lead to earthquakes. For example‚ injecting fluid into deep wells for waste disposal‚ filling reservoirs and firing underground nuclear test blasts. Since the tectonic plates
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A look at the Inner Earth Studying the earth’s interior can help us to understand earthquakes‚ volcanoes‚ plate tectonics and more about the inner earth’s natural processes. In general the earth’s interior has been sorted by Gravity. Heavier elements like iron tend to sink toward the center or core of the earth. Lighter materials‚ the silicates‚ oxygen compounds and water have risen to become part of the crust. This action has created distinct layers within the earth and is still in process today
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mineral phase relations in igneous petrology and several topics in structural geology. I have had both lecture/lab and field courses in structural geology‚ as well as a short module dealing with plate tectonics‚ and I am very interested in the whole area. I would like to explore structural geology and tectonics further at the graduate level. I am also interested in learning more about geophysics. I plan to focus on all these areas in graduate school while at the same time continuing to build up my overall
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searching and discovered that the earth’s tectonic plates are in constant motion. Two plates get stuck together where they meet (FAULTS) but forces deep within the earth drag and pull down the plates in different directions. Stuck together for so many years the stain gets too much‚ which then an earthquake can occur. After reading about earthquakes I had one scientific term that I did not get. That term was "Tectonic Plates"‚ all I really know about Tectonic Plates is that they are underground. I needed
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about 800 miles through California. The fault is named after the San Andreas Lake which is a lake that formed in the middle of the Fault. A fault is a break in the earth’s surface where two tectonic plates meet. The San Andreas Fault forms the boundary between the Pacific Plate and the North American Plate. The San Andreas Fault is the most famous fault in the world. It is about ten miles deep. The San Andreas Fault caused the 1906 San Francisco Earthquake. It is a magnitude 7.8 earthquake
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1. What: What plate boundary is it near? Great Rift Valley in Africa‚ which is the splitting of the African plate. 2. What type of volcano was it? Stratovolcano in the Virunga Mountains associated with the Albertine Rift. 3. Where: Where is the volcano located? It is located inside Virunga National Park‚ . 4. in the Democratic Republic of the Congo‚ about 20 km north of the town of Goma and Lake Kivu and just west of the border with Rwanda. 5. Where did the people move for safety? Rwanda
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Earthquakes in Australia Australia is a very lucky country that suffers very few earthquakes or volcanic eruptions. Earthquakes are caused by converging plates (usually subducting)‚ and there a 4 different types of waves in two categories; firstly there is Body waves which are broken into primary and secondary waves (these travel through the earth) Surface waves travel through only the crust and are called Love and Rayleigh. These Waves (the earthquakes) are measured by a seismograph/ a device that
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literally combined the volcanoes into one mass of rocky land * Step 4: the mass of land is now a hard smooth plate‚ the Canadian Shield * Step 5: the Atlantic plate crashed into the east side of Canada and the area of subduction formed the Appalachian mountains * Step 6: erosion moved sand and dirt into the pacific ocean and the atlantic ocean * Step 7: the Pacific plate collided with the west side of Canada‚ forming the Rocky Mountains * Step 8: the water between the Rocky
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density. 3. Physical properties of aesthnosphere and lithosphere. You should have knowledge of the composition and physical properties of the lithosphere and asthenosphere. Asthenosphere-lithosphere relationship is important to understanding plate tectionics. 4. Evidence of compositional characteristics of the internal structure of the earth. -meteorites are inferred to be composed of same material that earth was derived -overall densisty of earth is 5.5 gm/cm3 density of crust 2.6-3
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processes are predominant. Secondly‚ most of the tectonic plates in this region are diverging or converging. And finally‚ the volcanoes that occur in this region are as a result of stretching and thinning of the earth’s crust called ”non-hot spots”. Interplate volcanism such as the East Africa Rift which is an active narrow zone in which the African plate is in the process of splitting into two new tectonic plates called the Somali and the Habian plate. For the historical background of vulcanicity
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