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  2. Geology/Geography/Oceanography/Atmospheric Sciences
  3. Earth Physical Geology
  4. Quiz 6: Sedimentary Rocks

Which of the Following Rocks Is Lithified from Sediment That

Question 57
Multiple Choice

Which of the following rocks is lithified from sediment that was deposited in deep water and was essentially unmodified by post-depositional current action? A)cross-bedded dune sandstone B)wacke with graded bedding C)well-sorted, quartz sandstone D)reddish mudstone with mud cracks

Related questions
Q 58
Which type of sandstone contains abundant, clayey, matrix material? A)brownstone B)wacke C)arkose D)cherty
Q 59
What is a wacke? A)a limestone with abundant, sand-sized, quartz grains B)a sandstone with immature lithic sand grains embedded in a clay-rich matrix C)a dark-grey, calcite-rich mudstone or shale containing pyrite D)a dark, organic-rich, chemical sedimentary rock containing small crystals of halite
Q 60
What is the main difference between a conglomerate and a sedimentary breccia? A)Breccia clasts are angular; conglomerate clasts are rounded. B)A breccia is well stratified; a conglomerate is poorly stratified. C)Breccia clasts are the size of baseballs; conglomerate clasts are larger. D)Breccia has a compacted, clay-rich matrix; conglomerate has no matrix.
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