The Ballgame,Termination Ritual,and the Transformation of Classic Period Authority in the Mesoamerican Southern Gulf Lowlands

In the Gulf lowlands, Late Classic fluctuations were concomitant with the increasing importance of the Classic Veracruz style complex. A characteristic feature of the style was ballgame imagery on ballcourt panels, molded ceramics, and paraphernalia such as yokes, hachas, and palmas, as well as courts, markers, and stelae. Components of the Classic Veracruz style have been documented for the Gulf lowlands and adjoining regions of Mesoamerica. Few examples, however, derive from stratigraphic excavations of in situ deposits. We document the discovery, excavation, and initial interpretation of a monument-yoke-offering complex at Matacanela, located in the south-central Tuxtla Mountains. We present suggestive evidence for associated decapitation ritual. We conclude by assessing these data and generating hypotheses regarding the transitioning of authority. We situate the Matacanela complex within regional demographic, political, and economic transformations that occurred throughout the Classic period (ca. a.d. 300–800/1000), culminating in disruptions that may have been contentious.     

‘The Social’ and Beyond: Introducing Actor-Network Theory

In recent years, it has been suggested (e.g. TAG 2002, 2006; IKUWA3 2008) that it is necessary for the discipline to move beyond the study of ships and boats towards the ‘wider social contexts’ of seafaring and maritime activity. This paper investigates the contours of ‘social’ as an object of study. Two questions are asked: (1) how is this object defined within sociology, classical and contemporary social theory, and archaeology; and (2) what is the status of nonhumans, physical-material things, artefacts, plants, animals, etc.? After taking a look at several different theories, it is argued that it is not necessary for us to move beyond ships and boats. Instead, an alternative approach is offered, one that allows us to move beyond the restrictive ontology of the social.     

Lost in the Mail: the Inherent Errors of Mapping Australia Post Postcodes to ABS Derived Postal Areas

It is now common practice, by users of geographic information, to link data held at the postcode level to that obtained from the national census. This paper examines the relationship between Australia Post (AP) postcodes and Australian Bureau of Statistics (ABS) derived postal areas — which are an approximation of the former based on aggregated census collection districts (CDs). A group of adjacent ABS postal areas in northwest Melbourne was compared with the true AP postcode areas they purported to represent and the discrepancies were investigated. Firstly, shape mismatches were studied and their potential impacts upon resource allocation decisions were assessed. Next, comparisons of areas were undertaken. It was found that, in established inner city urban areas, the two sets of boundaries were highly correlated. However, outer suburban neighborhoods were identified as being particularly prone to major areal discrepancies. The implications of mismatches between these two key boundary data sources may be severe, given that management decisions and the allocation of public and private resources are often based on spatial statistical analyses which use these data sets. The authors acknowledge ABS efforts in providing information at the levels of aggregation that society demands. The introduction of ABS postal areas data has undoubtedly facilitated the use of demographic data in many sectors; it has, however, also caused some problems, for instance, when users assume that ABS postal areas are identical to AP postcodes. These issues could easily be avoided with the inclusion of more comprehensive metadata documentation accompanying ABS data. Research is continuing to develop a method by which agencies may derive common boundaries for their administrative units, yet still meet their own individual data and sampling requirements.     

Heavy Metals in Sediments of the Upper Hawkesbury‐Nepean River

There is little published information on heavy metals in surficial sediments of the upper Hawkesbury‐Nepean River in central New South Wales, Australia. In the current investigation, the fine fraction (<62.5 µm) of 90 sediment samples taken from this section of the river was analysed by flame‐Atomic Absorption Spectroscopy for nine heavy metals (Ag, Cd, Pb, Zn, Cu Co, Fe, Ni and Mn) to determine background and enrichment. Sediment in the upper Hawkesbury‐Nepean River is not heavily polluted by heavy metals. Maximum enrichment over background for Ni and Ag, Cd, Pb, Zn, Cu and Mn is 3x, 5.7x, 6x, 6.7x, 12x and 13.6x, respectively. Mean heavy metal concentrations for this, the upper section of the river, are about half the mean values for the Hawkesbury River between Windsor and Broken Bay in the lower, estuarine section of the river. The highest Cu, Pb and Zn concentrations (214, 108 and 334 mg kg^?1, respectively) occur in surficial sediments in Peachtree Creek at Penrith and the Nepean River near Jacksons Lane, Castlereagh. These metal concentrations are possibly associated with industrial activity at Penrith. Two of the six sewage treatment plants on the upper Hawkesbury‐Nepean River are associated with high metal concentrations (Cu, Zn, Fe and Mn) in sediments, that is, the West Camden and Penrith sewage treatment plants. Other possible sources of heavy metals are coal mining and washing which occurs at several places in the upper catchment. The highest Cd, Co and Fe concentrations (1.7, 27.6 mg kg^?1 and 4.81%, respectively) were found in sediments 400 m downstream of the Nepean Dam and the highest concentrations of Ni and Mn (54 and 790 mg kg^?1, respectively) were located in sediment from the Nepean River at Moresby Hill Road Bridge, near Robertson and at the Avon Dam Road Bridge. The source of these metals is unknown.