There is an ongoing controversial discussion as to whether n-alkane lipid biomarkers—and organic matter of loess in general—reflect a synsedimentary paleoenvironmental/climate signal or whether they are significantly affected by postdepositional “contamination,” for example related to root and rhizomicrobial activity. In order to address this issue at our study site (the Middle to Late Weichselian loess-paleosol sequence Gleina in Saxony, Germany), we determined and compared radiocarbon ages of bulk n-alkanes and sedimentation ages, as assessed by optically stimulated luminescence (OSL) dating. The bulk n-alkanes of the four dated samples yielded calibrated 14C ages ranging from 24.1 to 49.7 cal ka BP (95.4% probability ranges). While the three uppermost n-alkane samples are well within the range or even slightly older than the OSL-inferred sedimentation ages, the lowermost n-alkane sample is slightly younger than the OSL ages. There is hence little or no evidence at our study site for n-alkanes in loess-paleosol sequences being significantly “contaminated” by deep subsoil rooting or microbial processes. We propose a 14C isotope mass balance calculation for estimating such contaminations quantitatively. Radiocarbon dating of bulk n-alkanes might have great potential for Quaternary research, and we encourage further comparative 14C and OSL studies.

The study examines the Italian legislation on the cultural heritage and the environment, and points out the cultural gaps from the point of view of the definition and comprehension of these matters, and the delays surrounding the management of the cultural heritage in the territory. While theoretical debate on the environment in Italy has received a strong impulse in recent years, the cultural heritage continues to be governed by generally outdated laws of an essentially restrictive and punitive nature. The environment and cultural heritage are also seen by the Italian legislation as two separate entities, with negative consequences at the level of the protection, safeguarding and evaluation of the heritage. The study also puts forward a unified, dynamic view of the human environment (the interaction between human beings and the environment), which includes both the visible and invisible landscapes, the latter existing concealed beneath the surface. The proposed concept of the subsoil is that of a structured universe, in whose understanding and interpretation archaeology plays a determining role. By protecting and safeguarding only what ‘we can see’, i.e. the environmental and historic landscape above the soil, the law forgets that this is nothing other than the product of a series of partial landscapes fossilized and stratified in the course of time. By seeking out a new definition of the human environment, the study advances a conception that takes into account continuing transformations while not excluding an intuitive and emotional approach.