The Acheulean record of northern France and southern Britain has long been acknowledged as internationally important, having played an important historical role in the development of the discipline. Abundant artefacts have been recovered, primarily from fluvial gravel archives, allowing the responses of Middle Pleistocene human populations on the edge of their geographical distribution to be interrogated. The richness of the record from such deposits can most simply be read as reflecting absolute population numbers -and changes in this over time. However, factors such as regional superabundance of high quality flint (related to solid geology) and intensity of aggregate exploitation also played their part in generating the apparently regionally dense record of finds. This paper investigates the inter-related patterns of human behaviour, preservation, artefact release and research tradition which underpin these basic distribution maps. We here present a framework for understanding the processes which have created the current distribution map -in terms of where we find material, and which periods are best represented within it. We term this the Unified Palaeolithic Landscape Approach and outline ways in which the spatial and temporal range of the Acheulean record can be addressed through the archaeological record of its heartland.
Geology and Palaeolithic Research History in Cretaceous Northern EuropeThe rich Lower and Middle Palaeolithic record of Southern Britain and North France as currently mapped (Figure 1) emerged through the interaction of three regularly considered factors. Firstly much of our data was collected in the late 19 th century and early 20 th century in the wake of Joseph Prestwich's (1859) publication of the proof of the antiquity of humanity. The explosion of scientific interest, and efforts in documenting prehistoric implements and their geological contexts as well as securing specimens and collections for the burgeoning public museums, which expanded at this time contributed hugely to our core dataset. Secondly, the birth and expansion of human origins studies coincided with an industrial and engineering revolution that was hungry for raw materials extracted, by hand, from the landscape -clays, minerals and aggregate. The traces of human behaviour recovered from within these deposits was undoubtedly skewed in favour of Acheulean handaxesbeing abundant, large and very visible artefacts. Handaxes were more readily noted by quarry workers and passed through to collectors and academics to a greater degree than other artefact classes.Throughout the late 20 th and early 21 st century, the transition to mechanised aggregate extraction meant that fewer new northern Europe sites were encountered. Understanding of the existing record, however, was drastically transformed through the development of a fully multi-disciplinary approach to Quaternary environments and past human behaviour. In Britain, John Wymer (Wymer 1968(Wymer , 1985(Wymer , 1999 and Derek Roe (Roe 1964(Roe , 1968(Roe , 1981a(Roe...