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| Figure 6. Profile of isotope and chemical data for Crater Lake for the east basin in 1983. Silica values shown were redetermined in 1987, and the variation is not necessarily real. |
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| Figure 7. Profile of isotfope and chemical data for Crater Lake for the southwest bas’in in 1983. Silica values shown were redetermined in 1987, and the variation is not necessarily real. |
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| Figure 8. Profile of isotope and chemical data for Crater Lake for the southwest basin in 1984. |
