Recurrent sea-level changes are reflected in the formation of coastal landforms; estuary, lakes, lagoons and barrier beaches during the late Quaternary period along the Kerala coast, SW India. The sediment core from these landforms was addressed for sediment lithofacies, geochemical parameters and associated foraminiferal assemblages to reconstruct the late Quaternary environment. The textural characteristics of the sediment indicate a shallow marine to lagoon and swampy/marsh environment. A layer of coarse sandy sediment (7–9 m thickness) is overlying the late Pleistocene (40 Kyrs BP) sediment sequence. The sediment was deposited under violent to the calm environment attributing its deposition in diverse energy regimes. This is also corroborated with the micro-textures of quartz grains. The geochemical elemental relationship (Rb vs K₂O, Ni vs TiO₂, K₂O/Na₂O vs SiO₂/Al₂O₃, discriminant function) is established with paleoweathering, provenance and tectonic setting. An abundant population of Ammonia beccarii, A. tepida, E. discoidale, N. scaphum. A. beccarii in the sediments reveals their high tolerance and adaptability to the changing environment. The multiproxy studies on sediments, support a stronger monsoon in the early Holocene leading to the incursion of high-water levels, increased flow discharge and bottom scouring but, weak monsoon and arid climate prevailed during the Last Glacial Maximum (LGM). A conceptual model is proposed to depict the shoreline evolution and its climate.

周期性的海平面变化反映在沿海地貌的形成上；印度西南部喀拉拉邦海岸第四纪晚期的河口、湖泊、泻湖和屏障海滩。对来自这些地貌的沉积岩心进行沉积岩相、地球化学参数和相关有孔虫组合的处理，以重建晚第四纪环境。沉积物的质地特征表明浅海到泻湖和沼泽/沼泽环境。一层粗砂质沉积物（7-9 m 厚）覆盖在晚更新世（40 Kyrs BP）沉积序列上。沉积物在平静的环境下剧烈沉积，这归因于其沉积在不同的能量状态。石英颗粒的微观纹理也证实了这一点。地球化学元素关系（Rb vs K₂ O，Ni vs TiO ₂，K ₂ O/Na ₂ O vs SiO ₂ /Al ₂ O ₃，判别函数）是由古风化、来源和构造环境建立的。大量的Ammonia beccarii、A. tepida、E. discoidale、N. scaphum。A. beccarii在沉积物中显示出它们对不断变化的环境的高度耐受性和适应性。对沉积物的多代理研究表明，全新世早期季风更强，导致高水位侵入，流量增加和底部冲刷，但在末次盛冰期 (LGM) 期间，季风弱和干旱气候盛行。提出了一个概念模型来描述海岸线演变及其气候。