Refer to the map and photographs of Saint Island, Georgia (Figure tral portion o
ID: 288006 • Letter: R
Question
Refer to the map and photographs of Saint Island, Georgia (Figure tral portion of the island thee is a large r marsh mud. Living saltmarsh plants are pr of sal as shown on the right (west) in Figurest te Note that on the eas note the linear sandy beach in Figures7d B.A bounded on its seaward side (left) by anothd 8 saltmarsh mud. However, all of the living, suo saltmarsh plants and animals have been s this area. This is called relict saltmarshmud Pd maining from an ancient saltmarsh). mud (mud 10. What type of sediment is probably present be neath the beach sands in Figures 7A and B? 11. Explain how you think the beach sands became located landward of the relict saltmarsh mud 12. Portions of the living saltmarsh (wetland) in Figure 7C recently have been buried by bodies of white sand that was deposited from storm waves that crashed over the beach and sand dunes. What is the name given to such sand bodies? 13. Photograph 7C was taken from a landform calledC Aaron's Hill. It is the headland of this part of th island. What will eventually happen to Aa Hill? Why? 14. Based upon your answer in Question 13, would Aaron's Hill be a good location for a 15. Based upon your inferences, observations, explanations in Questions 11, 12, and l will eventually happen to the living sal Figures 7B and C? 13, what 16. What can you infer about global sea on your answers to Questions 4, and 15?Explanation / Answer
10. Muddy sediments are likely to be present beneath the beach sands. The mud is a result of the burial of previous generations of plants and animals (cordgrasses and oyesters) of the ecosystem.
11. Beach sands were deposited on the coast adjacent to relict marshlands due to action of winds, ocean currents over time. Longshore cuurents running parallel to coastlines are responsible for sand deposition as they find low-energy environments around the marshlands.
12. The sand bodies on the headland are called sandbars, which appear to be a ridge above sea level, as the spit onshore continues to grow.
13. Since the erosion and sand deposition is causing a spit to form along the coast of St. Catherine's Island, the headland is likely to get eroded over time. Rising sea levels and the threat of storm surges will likely erode a major portion of the island.
14. Since water would inundate the area due to shoreline retreat around Aaron's Hill, it would not be a good location for resort.
15. The living saltmarshes will get buried due to the continuous process of erosion and deposition, and eventually become relict marshlands.
16. The loss of vegetation (cordgrass) over time would mean release of carbon in the atmosphere, thus increasing the rate of global sea level rise.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.