AN EARTHQUAKE IN AUSTRALIA Australia has a relatively low rate of seismicity due to its location towards the centre of the Indo-Australian Tectonic Plate. Earthquake activity is much higher around the margins of the Indo-Australian Plate‚ for example In places such as Indonesia‚ Papua New Guinea and New Zealand. Nevertheless‚ many historic earthquakes have Occurred in Australia and Geosciences Australia’s database (QUAKES) contains information on tens of thousands Of historic earthquakes in the
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Associate Program Material Mineral Lab Worksheet Assignment: Mineral Lab | 70.0 | 70.0 | Comment: Good work. You identified all the minerals and did very well with that and the reasoning behind them. You also did very well on the evolutionary processes‚ as far as geological evolution of the earth. Great job! | Remove the above or just copy everything below which are the correct answers but Part 2 and 3 Needs to be in your own words
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thousand meters. The huge‚ brittle tectonic plates that make up Earth ’s crust normally move only a few centimeters per year‚ not fast enough to be noticeable in a human lifetime. However‚ in the East African Rift Valley‚ this tectonic motion is happening with remarkable speed. The East African Rift valley is an example of an active divergent rift‚ one of the few areas on Earth where a continent is being actively separated (rifted) by the ongoing forces of plate tectonics. East Africa Rift System (EARS)
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PHYSICAL REGIONS: * The total length of Australia’s coastlines is 35 877 km with western Australia’s being the largest. * Australia’s coastline is relatively short due to its compact shape(all in one) * Australia is the smallest out of the 7 continents * It has and area of7 682 000 km squared * A region is defined as an area with one or more features that distinguish it from surrounding areas. These are either‚ natural‚ cultural economic or political. Example- GREAT BARRIER REEF
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once joined together in a single supercontinent called Pangaea? A.Alfred Wegener B.Charles Darwin C.Arthur Holmes D. Harry Hess Answer Key: A Question 2 of 22 4.0/ 4.0 Points The scientific community rejected the theory of plate tectonics because Alfred Wegener could NOT A.identify a mechanism to move the continents. B.disprove competing theories that were not accepted by scientists. C.find geologic similarities on the different continents. D.provide evidence that the
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location and plate tectonic settings can easily help show why more than 50 eruptions have occurred in such a short period of geologic time. The Galapagos Islands are located on the equator west of the South American coast. Like many oceanic islands‚ they are formed by a mantle plume or hotspot like Hawaii. A major subduction zone currently sits under the islands‚ the two plates that are subducting beneath the South American and Caribbean plates are the Nazca and the Cocos plates. The Galapagos
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has rough edges and lines making it look a bit like a jigsaw puzzle.The energy stored here causes the pieces to slide‚ glide‚ knock and move around each piece. These pieces are also known as tectonic plates.
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sea floor abruptly deforms and vertically displaces the overlying water. Tectonic earthquakes are a particular kind of earthquake that are associated with the Earth’s crustal deformation; when these earthquakes occur beneath the sea‚ the water above the deformed area is displaced from its equilibrium position.[22] More specifically‚ a tsunami can be generated when thrust faults associated with convergent or destructive plate boundaries move abruptly‚ resulting in water displacement‚ owing to the vertical
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How tsunamis occur. As one plate subducts below another (moves underneath)‚ pressure builds for many years resulting in a section of the mega-thrust giving away. As this section gives away‚ it ruptures the ocean floor‚ resulting in a massive displacement of water‚ causing a tsunami. Tsunamis are barely felt as a ripple on the ocean’s surface‚ but as the waves reach land‚ they increase in size as the water becomes shallower. Japan earthquake and tsunami At 2:46pm Japanese time‚ on March 11th
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Spring 2011 Introduction to Beaches and Shorelines ES 142 Exam #1 Study Questions SUBJECT: Plate Tectonics 1. What occurs at subduction zones? Draw a cross section of oceanic plate subducting beneath a continental plate (Nazca beneath South America). 2. What is the lithosphere and what are the major lithospheric plates? 3. What are the various features and processes that define plate boundaries? 4. What processes occur at mid-ocean ridges and why? 5. What is a shear zone
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