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Page 464
... rock deformation - the various folds or bends in the strata and the faults that displace stratified rocks and to determine the history of the formation of ancient mountain chains . It is almost impossible to assess the importance of ...
... rock deformation - the various folds or bends in the strata and the faults that displace stratified rocks and to determine the history of the formation of ancient mountain chains . It is almost impossible to assess the importance of ...
Page 465
... rock whose discrete particles range from four to 64 millimetres in Table 2 : Size Limits of Common Grades and Rock ... rocks with more than 90 percent quartz , approximate- Sedimentary Rocks 465.
... rock whose discrete particles range from four to 64 millimetres in Table 2 : Size Limits of Common Grades and Rock ... rocks with more than 90 percent quartz , approximate- Sedimentary Rocks 465.
Page 466
... rock composed of silica - cemented quartz sand . The cement is commonly deposited in continuity ( when viewed through a microscope ) with the quartz grains . Relatively pure orthoquartzites ( ranging from as little as 80 percent to more ...
... rock composed of silica - cemented quartz sand . The cement is commonly deposited in continuity ( when viewed through a microscope ) with the quartz grains . Relatively pure orthoquartzites ( ranging from as little as 80 percent to more ...
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