Conclusion:
My research question for this lab was, "What environmental characteristics make a beach biogenic or detrital?" I thought the answer would be, "I think that beaches with allot of coral in the water around it will be biogenic, while beaches with rocks in the water will be detrital. If I find coral at a biogenic beach and rock at a detrital beach then my hypothesis will be correct."
We found that all of the biogenic beaches had coral in the water but some of them also had rocks in the water. We did not find a true detrital beach, though we did find a combination of mostly detrital but still biogenic. The beach in question had a cinder cone on one side but some coral in the water. The answer to this lab is, yes, you need coral in the water for a beach to be biogenic but it takes more than just rocks in the water to make a beach detrital. I will now recite some possible sources of error that could have skewed the results. We did not go to a truly detrital beach so our comparison was incomplete. There was no control sample for the sand analysis so the information gained from the experiment might not have been consistent.
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