An Analysis of Log Raft Open Water Performance and Crew Capability to Move Megaliths Pre-classic Olmec Used for Colossal Head Sculptures

In Mesoamerica, Preclassic Olmec society used large stones for monumental head sculptures, some of which weighed over 20 tonnes. These megaliths were retrieved from the Tuxtla Mountains and transported a distance of at least 80 km to their principal centre at San Lorenzo. The methods and routes used are uncertain, but water–based routes using rafts have been considered the more likely strategy. Of two watercraft types proposed, a log raft configuration has been more favoured. This research examines the possibility that rafts were used and considers structural viability and as the primary motive force, human physiological capabilities. Analyses were undertaken of both raft and crew and their combined performance under these loads. Maritime and meteorological factors found in the Gulf of Mexico were also applied to technological parameters. These analyses show that a log raft configuration would not have been a viable means to move such highly valued stones upstream on rivers, nor over open water.     

Central petén blue pigment: A maya blue source outside of Yucatán,México

Much of the research on Maya Blue has focused on locating palygorskite sources in northern Yucatán, México. To that end, Arnold et al. (2007) reported seven discriminate source mineral locations for palygorskite used in the manufacture of Maya Blue. Recently, a blue pigment was excavated from the archaeological site of Ixlú, El Petén, Guatemala and LA-ICP-MS and INAA analyses were conducted to determine if the pigment had the traditional Maya Blue structure and if it was from one of the seven mineral sources in México. Geochemical analyses demonstrate that the Ixlú pigment has the traditional Maya Blue structure, but it was manufactured from clays in central Petén, Guatemala. These new data suggest that the knowledge of Maya Blue manufacture was transferred and not the actual pigment and they reveal another source for Maya Blue manufacture outside of the Yucatán peninsula.     

Medieval Britain in 1976

Abstract

The Hospital of St Mary Magdalen, Partney has seen the first major excavation of a minor rural hospital. Existing by c 1115, it was amongst the earliest hospitals founded in Britain after the Norman Conquest and is one of a class of about 60 sites that were run as cells of larger religious foundations. Excavations uncovered the hospital chapel and its burial ground, as well as timber buildings. Monks/priests and lay people, possibly from the monastic estate, may have been interred in separate locations with different burial rites. Of particular note was a burial in a locked coffin or chest. Partney had ceased to function as a hospital by 1318, when it formed an administrative cell of Bardney Abbey. It was abandoned and robbed in the mid-15th century when the area was given over to agriculture.     

Preliminary geochemical assessment of limestone resources and stone use at Maya sites in the Three Rivers Region,Belize

The carbonate bedrock of northwestern Belize is poorly understood from the standpoint of both geochemistry and the use of stone in prehispanic Maya sites for buildings and monuments. The friable nature of the rock in this topographically rugged area makes it especially difficult to distinguish monuments from bedrock spall, as little carving, if any, survives, and identification rests on location and positioning. The research presented here analyzed 63 limestone samples collected from two sites in the Three Rivers Region of Belize. ICP-MS and ICP-AES were used to characterize the major, minor, and trace element chemistry of the limestone bedrock of the region and determine the amount of geochemical variability. Another important objective was attempting to trace the movement of monument stone and determining whether it was imported from outside of the sites. Bedrock, quarries, and possible monuments were all sampled for these purposes. Bedrock proved to be similar across wide areas. However, at Chawak But'o'ob, along the flank of the Rio Bravo, changes downslope in Mg concentration suggest a leaching of the bedrock by meteoric waters based on differences in porosity. At Maax Na, a hilltop site, in contrast, such leaching is not as apparent. Many monuments at both sites were found to be composed of stone similar in chemistry to the local bedrock, including several of the identifiable stelae. However, our analyses also revealed that a few monuments at Maax Na were made of material with a different chemical composition, apparently from stone imported to the site. These results suggest that the Maya deliberately selected certain types of limestone for certain purposes, and may even have traded in non-local rock. Overall, the methods used in this pilot study indicate there is real potential in more intensive, regional assessments of the materials used at archaeological sites, even in areas where the local stone does not have a distinctive geochemical signature.     

Regional Influences and Environmental Policymaking: a study of Acid Rain

This study uses a four-region classification of states to investigate the impact of regionalism on the acid rain policy debate. Using multiple regression analyses and controlling for such factors as total pollution emissions, coal production, and precipitation pH, it was found that a state's activity level with respect to involvement in the acid rain policy debate was significantly influenced by both its commitment to environmental protection and its regional differentiation.     

Taming Space: Drug use,HIV, and homemaking in Downtown Eastside Vancouver

This article explores ideas of home and place making that bear on the narrated realities of 14 women who are drug users living with HIV in Vancouver's Downtown Eastside. ‘Taming Space’ refers to the negotiations, transgressions and accommodations they make within particular spatial regimes. As residents of a ‘skid row’ district, research participants work to reconcile personal identities within representations of stigmatized space. As the subjects of epidemiological enquiry, clients of public health services and recipients of harm reduction initiatives, women both resist and acquiesce to the parameters of medicalized space. Housing and social service policies further demarcate spatial orders, especially framing women's options for mobility and homemaking. Finally, as street-involved persons they are subject to the often contradictory socio-spatial codes of street drug sociality. Drawing on the concept of turning points, I analyze the diverse narratives of these women as they flesh out particular dynamics of space and identity within broader structural contexts of colonialism, public health and poverty.