ABSTRACT Thirty sediment samples collected from the Cochin shoreline between Munambam and Kuzhupilly beach addressing the distribution and shell chemistry of foraminifera, sediment characteristics, and the implications for the environmental anomalies is the focus of the current study. The sole recorded foraminifera species from the investigated area is Ammonia beccarii. Estimation of Calcium carbonate, sand, silt and clay was cautiously done to analyse the textural characteristics. The calcium carbonate proportion can be attributed to the shattered molluscan shell along with the Ammonia beccarii count. Ilmenite, Monazite, Zircon, Pyroxene, Chlorite, Hornblende, Garnet, Staurolite are the significant heavy minerals identified from the area of study. The results for sample number MB19 exhibited anomalies on chemical composition for both foraminifera and heavy mineral grains. MB19 have dominantly dark coloured sediments with a comparatively higher silt percentage, presence of Bromium (Br) mineral in the sediment grains. EDS analysis in Ammonia beccarii traced Thulium (Tm), a rarely occurring rare earth element in the test at location MB19. It has been identified that stone revetments installed to defend the coastal erosion undergo weathering, contribute sediments to the beach and influences on the local ecosystem.
S et al. (Sun,) studied this question.