Lab: Analzing Marine Sediments

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Lab: Analzing Marine Sediments

  1. 1. Lab: Analyzing Marine Sediments Oceanography
  2. 2. Typos… Materials – 3 beakers, NO spoons. #4 & #5 should say, “Put approximately 250 mL of sample…
  3. 3. What are you doing? You will determine the environment of 2 samples of marine sediment? Is on neritic? Pelagic? You will separate the grain sizes using sieves. You will determine Wentworth size of sediment in each sieve. You will determine the percentage of each sieve/grain size.
  4. 4. Review… Neritic sediment may have these characteristics:-Coarse, may contain shell fragments, from environmentswhere water is moving rapidly, near the coastline. Pelagic sediment may have these characteristics:-Fine, also may contain shell fragments, but not many,from environments where water is moving slowly, usuallyfrom deep-sea areas.
  5. 5. What do you need?
  6. 6. Overview Get approximately 250 mL of the 2 sediment samples.. Measure mass of each sample. Remember to subtract the mass of the beaker! Put sample 1 in sieve and shake for 5 minutes. Determine the % of sediment in each sieve. Using the Wentworth chart, identify each sediment in each sieve (Boulder, pebble, gravel, sand, silt, or clay?). Repeat for sample 2. Answer conclusion questions and return materials where you found them!

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