In Fig. 5.5, which sediment is most poorly sorted and which is best sorted, and why?
Answer to relevant QuestionsHow were thick sequences of abundant graded sandstone beds and mudstones (Fig. 5.6) probably formed?Some sandstones are said to be “mature.” What does this mean, and what does it reveal about the history of the sandstone?How are sediments commonly sorted according to size so that pebbles are in one place, sand in another, silt in another, and clay elsewhere?What is an explanation for the fact, experimentally proven, that quartz sand grains are rounded much faster by wind than by a river?Much calcium carbonate is precipitated biochemically. How?
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