18. A combination of temperature and pressure determines where the mantle rock m

Question

18. A combination of temperature and pressure determines where the mantle rock melts or not. Choose a sentence which describes these effects correctly A. Melting temperature decreases as pressure increases. B. Melting pressure increases as temperature increases C. Melting temperature is approximately constant as pressure ranges. D. There is no scientific trend. 19. Follows show several igneous rocks. Choose the one which is not an intrusive igneous rock. B. Dike C. Pluton D. Tuff 20. The rounding and sorting of detrital sediment is a function of A. the transport process or mechanism B. the transport distance C. depositional environment D. B and C E. all of the above 21. Sedimentary rocks include A. any material which has settled from water. B. organic, rock and mineral fragments, and precipitated minerals. C. rocks which have been altered by compression. D. any layered rock consisting of grains. E. rocks which have been weathered 22. During the process of lithification, sedimentary rocks experience which of the following? A. cementation B. compaction C. decreased void space D. A and EB E. B and c F. all of the above

Explanation / Answer

18. Melting temperature decreases as pressure increases.

19. Tuff is not intrusive rock.

20. Rounding and sorting of detrital sediment is a function of the both transport distance and depositional environment [option D is right answer].

21. Organic, rock mineral fragments, and precipitated minerals.

22. During lithification, sedimentary rocks experience all of the above.

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