An Exploratory Geophysical Survey at the Pyramid Complex of Senwosret III at Dahshur, Egypt, in Search of Boats

A geophysical survey at the pyramid complex of Senwosret III at Dahshur sought to determine the suitability of magnetometry and electromagnetic induction (EMI, or conductivity) for mapping the area where several ancient boat-burials were found in the 1890s. At least one boat reported at the time of excavation remains unaccounted for. Tests demonstrated that magnetometry does detect subsurface structures of stone, fired brick, and unfired brick under current site conditions. Data indicated areas of geological activity as well as unexcavated archaeological remains, though no definitive traces of boat burials. No excavation was undertaken but another survey season is planned.
© 2009 The Authors     

Early Maya geometric planning conventions at El Palmar,Guatemala

Archeology of complex societies has long focused on the actors behind the planning and engineering of architecture in monumental centers. However, the motivations for and conventions used in ancient planning are often lost to modern scholars without the aid of texts of the builders. This is especially true with the early ancient Maya, where large centers with evidence of extensive planning existed as early the Late Preclassic period (ca. 300 BC–250 AD). The current Focus article addresses site planning of monumental Late Preclassic settlements with a case study at El Palmar, Guatemala. Results suggest that apart from cardinal alignments based on solar movement, conventions of planar geometry formed a large part of the planning toolkit. The discussion argues that the dimensions of repeating similar rectangles probably related to the ideal size of ancient Maya agricultural spaces.     

Geophysical investigations of WWII air-raid shelters in the UK

Just before WWII, the British government prepared for an aerial onslaught that was predicted to raze cities and cause mass casualties. By 1938, the Air Raid Precautions Act officially stated that population protection would be through dispersal, meaning evacuation and small-scale protection, local authority responsibility often devolving to householders. Archaeological records of remaining air-raid shelters are relatively rare and under threat. This paper reports on geophysical surveys on three sites in Stoke-on-Trent and London. Results found three intact Stanton shelters in Stoke-on-Trent, located by GPR, electrical resistivity, magnetometry, gravity and electromagnetic methods. In London, partially demolished shelters and an intact, mass public shelter were both detected by EM and GPR methods, with subsequent intrusive investigations confirming results. Study outcomes show hitherto-neglected wartime shelters are in varied condition, with geophysical surveys able to detect, characterise and assess them, helping bring WWII British history into the wider scientific community and public domain.     

Preserving the Global Nuclear Order: The Trident Agreements and the Arms Control Debate, 1977–1982

ABSTRACT

The Trident negotiations were a pivotal moment in establishing the US–UK nuclear relationship as an accepted element of the global nuclear order. The Trident agreements marked the first supply of a US delivery system to the UK since the signing of the Nuclear Non-Proliferation Treaty and the development of Superpower arms control. In turn, the development of these agendas in the international sphere influenced Anglo-American discussions on the replacement to Polaris. The Carter White House procrastinated on the provision of Trident due in part to their concerns over the political ramifications for their wider non-proliferation and arms control goals. However, fortuitously for the UK's nuclear programme, US–UK discussions on the replacement to Polaris coalesced with the reorientation of US foreign policy towards containment of the Soviet Union under Jimmy Carter and then Ronald Reagan – enabling the finalisation of the sale of Trident to the UK. As such, the status of the US–UK nuclear relationship as a broadly accepted element of the global nuclear order is a legacy of the ‘long 1970s’ alongside the early Cold War.     

Late Holocene Neotropical agricultural landscapes: phytolith and stable carbon isotope analysis of raised fields from French Guianan coastal savannahs

This paper summarizes phytolith analyses from four pre-Columbian agricultural raised-field sites of the coastal savannahs of French Guiana—Savane Grand Macoua, Piliwa, Bois Diable and K-VIII—and carbon isotope analyses from the first-named site. The combined phytolith and ¹³C isotope analyses evidence the transformation of the landscape from a relatively homogeneous wetland vegetation comprised of a mixture of C4 and C3 plants (the latter including Cyperaceae and other herbaceous monocots such as Marantaceae and Heliconia, Oryzoideae grasses, and other plants typical of frequently flooded areas) to the construction of raised fields that were dominated by C4 plants (maize and other Panicoideae grasses). Our analysis proves the utility of phytoliths for tracing the agricultural history of landscapes, showing that, as in other parts of the Central and South American lowlands, maize (Zea mays) was one important crop cultivated in raised fields. We also estimated the productivity of raised-field agriculture, showing that in combination with other subsistence activities, it certainly had the capacity to sustain sizeable populations.     

Vegetation history at the multi-period prehistoric complex at Ballynahatty,Co. Down,Northern Ireland

Palaeoecological methods can provide an environmental context for archaeological sites, enabling the nature of past human activity to be explored from an indirect but alternative perspective. Through a palynological study of a small fen peatland located within the catchment of a multi-period prehistoric complex at Ballynahatty, Co. Down, Northern Ireland, we reconstruct the vegetation history of the area during the early prehistoric period. The pollen record reveals tentative evidence for Mesolithic activity in the area at 6410–6220 cal BC, with woodland disturbance identified during the Mesolithic–Neolithic transitional period ca. 4430–3890 cal BC. A more significant impact on the landscape is observed in the Early Neolithic from 3950 to 3700 cal BC, with an opening up of the forest and the establishment of a mixed agricultural economy. This activity precedes and continues to be evident through the Mid-Neolithic during which megalithic tombs and related burial sites were constructed at Ballynahatty. Due to chronological uncertainties and a possible hiatus in peat accumulation in the fen, the contemporary environment of the Ballynahatty timber circle complex (constructed and used ca. 3080–2490 cal BC) and henge (dating to the third millennium cal BC) cannot certainly be established. Nevertheless, the pollen record suggests that the landscape remained open through to the Bronze Age, implying a long continuity of human activity in the area. These findings support the idea that the Ballynahatty prehistoric complex was the product of a gradual and repeated restructuring of the ritual and ceremonial landscape whose significance continued to be recognised throughout the early prehistoric period.