Red abalone collecting and marine water temperature during the Middle Holocene occupation of Santa Cruz Island,California

Oxygen isotope values derived from prehistoric mussel (Mytilus californianus) shell calcite are used to determine whether sea-surface temperatures in the vicinity of the Punta Arena site (CA-SCRI-109) on Santa Cruz Island, California, were cooler than present between 6300 and 5300 cal BP. This site and others in the western sector of the island dating to this period are distinctive because of the presence of large red abalone (Haliotis rufescens) shells, a species that historically has been subtidal around Santa Cruz and the other northern Channel Islands. Comparison of temperature values derived from archaeological shells with those from modern mussel shells, along with water temperatures derived from satellites, indicates that waters were cooler during the 6300 to 5300 cal BP period. These results are consistent with a previous study and support the interpretation that collection of red abalone during the 6300–5300 cal BP period was partly the result of cooler water temperatures that made this large mollusk more available to foragers in the intertidal or shallow subtidal zone.     

Transnational artifacts: Grappling with fluid material origins and identities in archaeological interpretations of culture change

There has been a gradual shift in historical archaeology towards interpretive approaches to material culture, including recognition of the potential for multiple functions and meanings in local contexts. It is argued here that artifacts can also maintain multiple, fluid origins and identities that affect our understanding of the nature of cultural persistence and change among migrant, indigenous and other ethnic groups. However, predefined classification schemes are often rigid and do not allow for this kind of fluidity, including the potential for artifacts from one culture to be indigenized into another. Data drawn from recent research on Japanese migrants in British Columbia, in conjunction with an approach rooted in transnationalism and diaspora, are used to highlight the nature of these ambiguities and to suggest methodological and theoretical means of overcoming them. These solutions include the need to develop contextual classification schemes that incorporate multiple artifact identities and to conduct detailed material culture histories that trace shifting origins and identities both before and during periods of migration or displacement.     

Strontium isotopes and human mobility in prehistoric Denmark

The principles behind the strontium isotopic system are an important tool for archaeologists tracing human migration and patterns of movement in prehistory. However, there are several scientific challenges of analytical nature, as well as those which relate to unknown parameters inherent to the interpretation of such data. One prerequisite is the knowledge of the range of strontium isotopic ratios that best characterize the bioavailable fractions of a particular area of interest. The study reported here attempts to establish a baseline for strontium isotope signatures valuable for Denmark (excluding the island of Bornholm) and particularly for the use in archaeological investigations. We present strontium isotope ratios of bones and teeth from modern mice contained in owl pellets, of snail shells, and of archaeological fauna samples. We compare these ratios with median strontium isotope signatures characterizing human enamel populations from archaeological sites within Denmark. The fauna samples reported here range from ⁸⁷Sr/⁸⁶Sr = 0.70717 to 0.71185 with an average of 0.70919, and human enamel defines a range from ⁸⁷Sr/⁸⁶Sr = 0.7086 to 0.7110 with an average of 0.7098. In both datasets, we observe a small difference between the baseline values for the western (Jutland) and eastern (Funen, Zealand, and the southern islands) parts of Denmark. We therefore propose two slightly different baseline ranges with a partial overlap for the isotopic signatures of bioavailable strontium fractions within Denmark, namely a range of ⁸⁷Sr/⁸⁶Sr = 0.7078–0.7098 for the western area and a range of ⁸⁷Sr/⁸⁶Sr = 0.7089–0.7108 for the eastern parts.     

Anti-Slavery and the Reconstitution of Empire

This survey article combines some recent scholarship on anti-slavery with work on humanitarianism and legal history to explore ways in which anti-slavery fed into the legal transformation of the British Empire in the first decades of the nineteenth century. It argues that campaigns for abolition, emancipation, and the amelioration of slavery did more than use law as a means to the end of slave emancipation. Anti-slavery efforts were integral to a larger process of imperial legal reordering: they often aimed, and invariably worked, to transform the legal relationship among subjects, colonial states and the imperial centre.     

Formation of the Florisbad spring and fossil site – an alternative hypothesis

In considering that fossilization could not have taken place in the areas of the spring vents at Florisbad, and that the spring-water was not responsible for fossilization, this hypothesis provides an alternative environment for the fossilization of faunal remains. Based on examination of the site, studies on various aspects of the site, as well as previous hypotheses on the formation of the site, an alternative theory on the formation of the Florisbad spring site is presented. It is contended that a large spring pan developed around the springs, which was later largely covered, and transformed into a dam, by the migration of the Florisbad sand dune. When the water rose to near the top of the Florisbad dune dam, the eastern arm of the dune was breached, evacuating the contents of the dam in a flood of water and sediments. This caused the ephemeral drainage line to the east, to be modified into a flat-bottomed marshy vlei, where the majority of the dam sediments were deposited. Previously largely unanswered and debatable questions such as the erosion of the eastern side of the spring site, the 7 m of clay deposits recorded in the modified vlei area, and aspects of the Peat IV layer are addressed. The importance and influence of the panveld and sand dunes in the formation of the spring site are also examined.     

ENSO influence on Holocene Aboriginal populations in Queensland, Australia

In the Pacific region, the onset of modern El Niño/Southern Oscillation (ENSO) activity at approximately 5000 years ago may have played a significant role in the development of cultures in the Pacific basin. Within Australia, similar trends in population and resource use have been identified but largely ascribed to cultural changes. To test human responses to changing ENSO activity through the Holocene we analysed a comprehensive suite of 710 radiocarbon ages from archaeological sites in ENSO-sensitive Queensland. We observe a dramatic and sustained increase in landscape activity at inland sites from 4860 ± 15 years ago, statistically indistinguishable from the timing of the onset of modern ENSO activity. Subsequent changes in long-term activity directly impacted on human populations indicating that once established, ENSO maintained a continuous influence on disparate cultures throughout the Pacific basin.