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GE2341-2011 hw4_solution

# GE2341-2011 hw4_solution - Geology 2341 A Term 2011...

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Part A: O Backgr The Haw string of mantle pl form isla subside b Ho Objective: to round: aiian-Empe more than 1 lume) in the ands while ot below sea lev G Wo omework A o discover so ror seamoun 00 volcanoe asthenosphe thers are sub vel often for Geology 23 orcester P Assignmen ome of the a nt chain stret es was forme ere below. S bmerged sea rming flat-to 1 341, A Ter olytechnic nt 4, Due b aspects of pla tches for 6,0 ed as the Pac Some of thes mounts. Ove opped guyots rm 2011 c Institute by 5:00 PM ate tectonics 000 km acros cific plate sli se volcanoes er time the v s. M Sep. 19 s by examini ss the Pacific id across a h extend abov volcanoes ero ing real data c Ocean. Th hot spot (or ve sea level ode, cool an . is to nd

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2 Procedure: Step 1: Plot the age-distance data To better understand this process we will plot the age-distance relationship of 30 volcanoes listed in Table 1 on the graph provided. Mark a “ + “ at each volcano’s age-distance point. Give the plot a descriptive title and label each axis so that someone seeing the graph for the first time could understand what it represents. (Use Microsoft Excel to plot the data). (2 pts) 0 1000 2000 3000 4000 5000 6000 0 2 04 06 08 0 Distance,(Km) Age, (Ma) Volcano age vs. distance from Hawii hotspot Volcano age vs. distance from Hawii hotspot
Step 2: I 1) Draw represent all lie on Points no Line is ‘b represen analysis trendline 2) Calcul a. First d Plate rate m=(y-b) b. The an cm/year. Plate rate In what d 3) Try fit slopes. H Interpret th a straight lin ts the averag the line. Giv ot exactly on best fit’, the tations of tr is also calle e in a chart b late the rate determine the e = ______7 )/(x-a) nswer above Convert the e = ___ 75km direction is t tting the data How long ago 0 1000 2000 3000 4000 5000 6000 Distance,(Km) e data ne that best f ge rate at wh ve some reas n line: line is an a rends in data ed regression beyond the a (distance/tim e slope of the 75.83______ is in units o e value abov m/yr * (100,0 he Pacific pl a better by p o would the y = 75.828 R² = 0.98 02 0

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GE2341-2011 hw4_solution - Geology 2341 A Term 2011...

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