The stratigraphic succession of the Mar Piccolo basin (Gulf of Taranto, Southern Italy) is well known in the scientific literature dealing with the last interglacial since its morphological evolution is influenced by sea level changes during Late Pleistocene-Holocene. The local Holocene sea level history is well known thanks to data deriving from peat and ash layers identified in different sediment cores obtained underwater and in coastal areas. Peat sediments are frequently interlayed with muddy-sand beds rich in Cerastoderma glaucum (Poiret, 1789). In the literature of the Mediterranean basin, AMS 14C dating on C. glaucum is widely used also in paleo-environmental reconstruction because this bivalve is considered an useful marker of sea level, though in lagoonal systems, large age offsets have been reported in different areas. Due to the availability of precise chronological and geochronological markers, in order to validate the use of C. glaucum in paleo sea level reconstruction, AMS 14C dating campaign was carried out on this bivalve deriving from several cores drilled in the Mar Piccolo basin and its nearby areas. Nineteen AMS 14C dating analyses carried out on C. glaucum sampled from different sediment cores up to a maximum of 30 m from the seafloor are presented. These results show an inconsistency of the ages in relation to a sea-level rise reconstruction model. The interpretation of the data was performed after the estimation of the local age offset calculated by analyzing six live samples, collected in 2017 in Mar Piccolo and in Croatia, and two samples dated to 1968–1969. The results show that for both the classes of samples (2017 and 1960s) an age offset ranging from 600 to 800 yr can be estimated.

中文翻译：

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14C 年龄偏移在塔兰托（意大利南部）的 Mar Piccolo 海盆地，在 Cerastoderma Glaucum 上估计（Poiret，1789 年）

Mar Piccolo 盆地（意大利南部塔兰托湾）的地层序列在处理末次间冰期的科学文献中广为人知，因为其形态演化受晚更新世 - 全新世期间海平面变化的影响。由于在水下和沿海地区获得的不同沉积物核心中确定的泥炭和灰层的数据，当地的全新世海平面历史是众所周知的。泥炭沉积物经常与富含青色角霉（波瓦雷，1789）。在地中海盆地的文献中，AMS14C约会C. glaucum也广泛用于古环境重建，因为这种双壳贝类被认为是海平面的有用标志，尽管在泻湖系统中，不同地区报告了大的年龄偏移。由于精确的年代和地理年代标记的可用性，为了验证使用C. glaucum在古海平面重建中，AMS14对这种源自 Mar Piccolo 盆地及其附近地区钻探的几个岩心的双壳贝类进行了 C 测年活动。十九 AMS14C 测年分析C. glaucum展示了从距海底最多 30 m 的不同沉积物岩心采样。这些结果表明与海平面上升重建模型有关的年龄不一致。数据的解释是在通过分析 2017 年在 Mar Piccolo 和克罗地亚收集的六个活体样本以及两个 1968-1969 年的样本来估计当地年龄偏移后进行的。结果表明，对于两类样本（2017 年和 1960 年代），可以估计 600 到 800 岁的年龄偏移。