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Name _______________________________________________________ Per. ______ Chapter 7 Review – Metamorphism & Metamorphic Rocks 8. The parent rock of a marble is __________. 1. Metamorphism literally means to "change form." shale True limestone False granite 2. Which of the following is an agent of metamorphism? slate electromagnetism sandstone heat chemically active fluids 9. What is the texture of the following metamorphic rock? all of the above only heat and chemically active fluids 3. The agents of metamorphism include heat, pressure, and chemically active fluids. True . False 4. Most metamorphism takes place __________. foliated at Earth's surface not foliated only at a significant depth below the surface no texture exists in young sediments 10. The following close-up image is of a metamorphic rock called __________. in Earth's core where a rock is subjected to conditions unlike those in which it formed 5. Contact metamorphism occurs in association with igneous intrusions. True False 6. The most important agent of metamorphism is heat. True False greenstone slate schist 7. During extreme metamorphism, the transformation may be so complete that the parent rock cannot be determined. True gneiss marble False 11. When rocks exhibit ductile behavior, their mineral grains tend to flatten and elongate when subjected to differential stress. fault breccias mylonites True False 12. When shale is subjected to low-grade metamorphism, its minerals align themselves and the metamorphic rock is formed. quartzite conglomerates serpentinites none of the above 18. The various types of foliation depend upon the grade of metamorphism and the mineralogy of the parent rock. marble True slate gneiss amphibolite 13. Mineral alignment in a metamorphic rock usually gives the rock a foliated texture. False 19. Regional metamorphism produces the greatest volume of metamorphic rock. True False True False 14. Following high-grade metamorphism, the segregation of minerals into separate bands is referred to as __________. schistocity slaty cleavage rock cleavage preferred orientation gneissic texture 15. When subjected to pressure, metamorphosed rocks often exhibit a layered or banded texture called __________. foliation slating bedding 16. Most regional metamorphism occurs __________. ____ 20. Metamorphism can best be defined as A. compaction and cementation of rock fragments B. precipitation of minerals dissolved in water C. solidification of magma by cooling D. changing of a rock by heat and pressure ____ 21. Where does most metamorphic rock form? A. deep below the earth's surface B. on the earth's surface C. within volcanoes D. on lake beds ____ 22. Which of the following is classified as a metamorphic rock? A. basalt B. diorite C. limestone D. schist in areas of active mountain building in the lower mantle around magmatic intrusions around volcanoes on the seafloor 17. One type of metamorphic rocks that form in fault zones are termed __________. ____ 23. The type of metamorphism that results from the heat of magma is called A. foliation B. the rock cycle C. contact metamorphism D. extrusion ____ 24. Slate is formed when great pressure acts on, and causes crystal changes in what sedimentary rock? A. granite B. obsidian C. limestone D. shale ____ 25. Which of the following describes the processes by which sedimentary rock becomes metamorphic rock? A. weathering B. erosion C. intense heat and pressure D. cooling and solidifying ____ 26. Metamorphic rocks with mineral crystals arranged in parallel layers, or bands, are A. clastic B. porphyritic C. intrusive D. foliated association with what geologic event? A. volcanic eruptions B. earthquakes C. mountain building D. weathering and erosion ____ 29. The meaning of the word "metamorphic" is A. fire-formed B. to change C. sedimentaion D. permanent 30. Metamorphism may produce all of the following except A. schistose texture B. scoria C. recrystallization ____ 27. An example of a foliated metamorphic rock is D. slaty cleavage A. granite B. gneiss C. marble D. quartzite E. light and dark layers in rocks ____ 28. Metamorphic rocks are often found in characteristics of metamorphic rocks? 31. In the alteration of parent rocks to metamorphic rocks, all the factors below control properties and mineral composition except A. minerals generally having lower specific gravities than those of the parent rock A. weathering B. foliated or nonfoliated textures B. hot water or steam C. cleavage C. temperature and pressure D. parallel alignment of minerals D. composition of the parent rock 32. Which parent rock subjected to intense heat and pressure is likely to produce quartzite? E. minerals nearly always of microscopic size because of intense heat and pressure 34. Parent rocks and their common metamorphic equivalents are paired below. Which pair is not correct? B. dolomite A. basalt-hornfels C. granite B. dolomite-marble D. shale C. shale-phyllite E. sandstone D. shale-marble 33. Which of the following is not one of the 35. Matching: ____ Metamorphism ____ metamorphism adjacent to a pluton ____ Solid-state recrystallization of a rock ____ rock made next to a pluton ____ Pressure roughly correlates with the ____ planar orientation of minerals in a rock ____ non-foliated metamorphic rock ____ layered and foliated metamorphic rock ____ A rock revealing its metamorphic facies ____ group of rock possessing specific types of minerals reflecting the temperature and pressure of formation A. B. C. D. E. F. G. H. I. J. hornfel schist foliation reorganization of solid mater facies metamorphism contact depth of burial marble gneiss 36. Fill in the blanks. Write in the blanks beside the rock descriptions the rock terms that fit best gneiss hornfels phyllite schist granite marble quartzite slate Rock Descriptions a. coarse-textured, nonfoliated rock, mostly calcite _______________ b. foliated rock showing alternating light and dark layers _______________ c. foliated rock with visible grains of platy minerals _______________ d. dense, hard rock, mainly recrystallized SiO2 grains _______________ e. fine-grained, foliated rock with silky luster, originally shale _______________ f. rock resulting from metasomatism of gneiss and schist during regional metamorphism _______________ g. very fine-grained, foliated rock that splits easily _______________ h. nonfoliated, dark, dense-textured rock containing microscopic mica grains _______________ 37. Match descriptions to the following metamorphisms: ___ Contact ___ Regional ___ Burial ___ Cataclastic Example Rocks a. large area b. low temp & pressure due to above weight c. faulting d. near magma ___________&______________ _______________________)___ ___________&______________ _______________________)___ 38. Which rocks would you find in each condition above? Write rocks in blanks above. gneiss marble hornfel serpentinite slate 39. Put the following rocks in order of change due to increasing heat and pressure ___Gneiss ___Phyllite ___Schist ___Shale ___Slate quartzite schist
