c. with a crystalline texture d. All of the above describe tormation of chemical
ID: 288396 • Letter: C
Question
c. with a crystalline texture d. All of the above describe tormation of chemical sedimentary rocks 7. Biogenic sedimentary rocks are similar to in 'hat a. clastic sedimentary rocks; chemical weathering is not involved in their origin tbs clastic sedimentary rocks; physical weathering is the dominant process in their formation c. chemical sedimentary rocks; removal of dissolved ions from water is an important process in their tormation d. chemical sedimentary rocks; a fine-grained clastic matrix holds the rocks together. 8. Well-rounded grains in a clastic sedimentary rock indicate a the absence of cleavage in the mineral clasts. b. rapid transport and deposition. c. numerous collisions between particles during extensive tramsportation d. lack of chemical weathering. 9. Angular grains in a clastic sedimentary rock indicate a. the absence of cleavage in the mineral clasts. b. rapid transport and deposition us collisions between particles during ex- tensive transportation. d. lack of chemical weathering 10. A mature clastic sedimentary rock is charactesized by a. well-rounded grains; good sorting; minerals resis- tant to chemical weathering b. angular grains; poor sorting; minerals that under go rapid chemical weathering c. abundant fossils. d. None of the above features.Explanation / Answer
7. B. Physical weathering will help in the formation and these are clastic sedimentary rocks and physical weathering is the domination process.
8. B. Rapid transportation and deposition will make these rocks well round.
9. C. The rapid collision between the particles will make the sediments to break a part and this happens during an aggressive transportation.
10. A. When the sediment has well rounded and good sorting and are resistant to chemical weathering are usually matured rocks.
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