The goal today was to get as many cores as possible for Stephanie’s project. To achieve that, we went to several different beaches and looked for areas that looked likely to have been affected by storm surges. These areas needed to be close enough to the water to have the storm deposits and far enough to have marsh deposits for dating. First stop: Rosalie Beach! This seemed like a good location because of the nearby marshy areas.
To get to this beach, we ‘had’ to stop at this beautiful little resort (to get permission).
Behind the resort, there were stormy black sand beaches.
The black sand is made from crushed up volcanic rock. These rocks are high in dark minerals that give the sand its black appearance.
We made sure, with the help of a guide, that we would not disturb the turtles that lay their eggs at this beach. We also found some places that we thought may have had a history of storm surges.
Stephanie digs a hole to examine the layers while Dr. Lazar provides guidance.
After Rosalie, we headed to a nearby rocky beach to look for similar spots.
There were definitely some interesting features at this beach, and it was clear that the storms here can bring in intense and unpredictable waves as well as high winds as can be seen in the trees on the side of this cliff.
We took samples at Delices Beach behind large rocks that would potentially slow the receding water and lower the water energy for foraminifera to be deposited in the area. We then can use the core to see the record of storm events by identifying the ocean foraminifera that were taken up onto land and deposited there.
Overall, we managed to recover seven cores that look promising. A very successful day!