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Geography, 25.07.2019 01:20 kaylallangari2145

Hawaiian volcanoes and rates of plate motion an analysis of the 60-million-year old hawaiian island emperor seamount system provides some in- depth insights into movement of the pacific plate. the hawaiian island chain is currently located near the middle of this large ocean plate and has been formed by a relatively fixed area of shallow hot mantle material called a hot spot. a hot spot may last for 100 million years and during that time may contribute to the formation of seamounts or even island chains. use the information about the hawaiian islands in the map below to answer the following questions. geologists collected rocks from locations throughout the hawaiian islands to determine their ages through geochronology. the locations of the rocks are given by stars on the map. ages for the collected rocks are given in units of millions of years (ma) and ages correspond to the stars. 159 160° 154° 158° 157° 156 155° kaua'i 22° 5.1 ma ni'ihau 4.9 ma o‘ahu 2.6 ma 3.7 ma 1.9 ma 1.8 ma molokai 1.3 ma maui lana'i 1.3 ma 0.8 ma kahoʻolawe 1.0 ma 20° hawai'i 0.5 ma -19 100 200 kilometers 4.5cm 34. based on your answers, is the pacific plate increasing or decreasing its rate of movement?35. by how much? show your work for full credit. 36. where do you think the most volcanic and seismic activity is occurring today on the hawaiian islands?37. add a n. e. s or w to the following latitude/longitude coordinates. n 155°00'00": 20°00'00": 38. which hawaiian island is located at the coordinates in the previous question?

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