Supplementary files for: Late Quaternary history of Lammefjorden, north-west Sjælland, Denmark

Lammefjorden is a reclaimed fjord in north-west Sjælland, Denmark. Sediment cores from the area were collected to study its development after the last deglaciation, in particular the sea-level history. Late glacial and Early Holocene lake and bog deposits occur below marine deposits. Sparse late glacial fossil assemblages indicate tree-less environments with dwarf-shrub heaths. Early Holocene deposits contain remains of Betula sec. Albae sp. and Pinus sylvestris, which indicate open forests. The wetland flora comprised the calciphilous reed plant Cladium mariscus and the water plant Najas marina. Marine gyttja from basins is characterised by sparse benthic faunas, probably due to high sedimentation rates. In some areas, shell-rich deposits were found, with large shells of Ostrea edulis, indicative of high summer temperatures, high salinity and strong tidal currents. A marine shell dated to 6.7 cal. ka provides a minimum age for the marine transgression of Lammefjorden.拉姆费湾（Lammefjorden）是丹麦西兰岛西北部一处经围垦的峡湾。为探究末次冰消期以来该区域的演化历程，尤其是海平面变化历史，研究人员采集了该区域的沉积物岩芯。晚冰期与早全新世的湖泊及沼泽沉积赋存于海相沉积层之下。稀少的晚冰期化石组合表明，当时为无乔木、以矮灌丛为主的环境。早全新世沉积中含有白桦组桦木（Betula sect. Albae）和欧洲赤松（Pinus sylvestris）的遗存，指示彼时发育疏林植被。湿地植物区系涵盖嗜钙的大克拉莎（Cladium mariscus）与草茨藻（Najas marina）。盆地中的海相腐泥（marine gyttja）以产出稀少的底栖动物群为典型特征，这大概率与较高的沉积速率有关。部分区域发现了富贝壳沉积，其中包含大量欧洲牡蛎（Ostrea edulis）壳体，可指示当时存在夏季高温、高盐度与强潮流的环境。一件测年为6.7校正千年（cal. ka）的海相贝壳标本，为拉姆费湾的海侵事件提供了最小年代限定。