(a) Using the data provided in Table 2.2 , complete Table 2.3 by calculating the relative concentration...

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(a) Using the data provided in Table 2.2 , complete Table 2.3 by calculating the relative concentration (concrel) values for (i) mantle (peridotite) rocks, (ii) oceanic crust rocks, and (iii) continental crust rocks, compared with carbonaceous chondrite composition. Indicate whether each of the calculated values represents relative enrichment or relative depletion for the different elements in the terrestrial rocks. Express your results to no more than three significant figures.

Table 2.2

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(b) Plot your results from Table 2.3 on the graph in Figure 2.3. Consider Cr, Ni, K and Ti as ppm values only. Data for chondrite normalized ocean crust, together with the first two points for chondrite normalized peridotite (mantle) and continental crust, have already been plotted. The order of elements has been chosen to illustrate the main differences and similarities in these three chondrites normalized. (i.e. spidergram) patterns.

Table 2.3

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Figure 2.3

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(c) What can you deduce must have happened to the element distribution within the Earth since its condensation and accretion from the solar nebula?

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An Introduction To The Solar System

ISBN: 9781108430845

3rd Edition

Authors: David A. Rothery, Neil McBride, Iain Gilmour

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