Late Neolithic living floors in the southern Paris Basin are still not completely understood. In settlement contexts, the architecture and the organisation of activity areas are quite difficult to characterize and reconstruct. Only a few house plans are known. However, many thinly stratified sites with artefact spreads could represent preserved living floors. The aim of this paper is to investigate the formation processes of this type of site through geoarchaeological study (soil micromorphology) of three sites (Gas, Sours and Pussigny), located in different geographic contexts. In particular, discussion centres on whether these are disturbed layers or well or partially preserved living floors. Using micromorphological analysis we were able to identify several constructed micro-facies (invert, backfill and screed) and functional micro-facies (trampled occupation surfaces inside or outside buildings). The microstratigraphic organisation of pedo-sedimentary sequences could be representative of different types of living floor: constructed floors inside cob buildings, living floors just outside buildings and yard floors. The results of this research confirm that the artefact spreads are the visible aspect of living floors. While for a long time the preservation of living floors was not considered because the conditions were regarded as unfavourable, this study actually demonstrates their possible preservation in different geomorphological and pedological contexts, as well as their informative potential. Moreover, the study shows that the artefact spreads reflect different spaces, depending on environmental conditions and human activities. In a context where data on Late Neolithic architecture in the south-western part of the Paris Basin is limited, these results confirm the presence of built structures on these sites and provide insights into the raw materials used for the construction of houses. Ultimately, the results contribute new knowledge and broaden the fields of research in geoarchaeology and the palaeo-ethnology of living floors.

巴黎盆地南部的新石器时代晚期生活地板仍未完全了解。在聚落环境中，活动区域的建筑和组织很难表征和重建。只有少数房屋计划是已知的。然而，许多带有人工制品的薄层遗址可以代表保存完好的生活地板。本文的目的是通过位于不同地理环境的三个遗址（Gas、Sours 和 Pussigny）的地质考古研究（土壤微形态学）来研究此类遗址的形成过程。特别是，讨论集中在这些是受干扰的层还是保存完好或部分保存的生活地板上。使用微形态分析，我们能够识别出几个构建的微相（倒置、回填土和熨平板）和功能微相（建筑物内部或外部被践踏的职业表面）。土壤沉积序列的显微地层组织可以代表不同类型的生活楼层：cob 建筑物内的人工楼层、建筑物外的生活楼层和庭院地板。这项研究的结果证实，人工制品的扩散是生活地板的可见方面。虽然长期以来由于认为条件不利而没有考虑对生活地板的保护，但这项研究实际上证明了它们在不同地貌和土壤环境中的可能保存，以及它们的信息潜力。此外，研究表明，人工制品的传播反映了不同的空间，这取决于环境条件和人类活动。在巴黎盆地西南部新石器时代晚期建筑的数据有限的情况下，这些结果证实了这些地点的建筑结构的存在，并提供了对用于建造房屋的原材料的深入了解。最终，这些结果贡献了新的知识并拓宽了地球考古学和生活地板古人种学的研究领域。