Isotopes (Other Keyword)
51-56 (56 Records)
Following the entry of Zea mays to northeast North America, there are indications of human population growth, suggesting crop intensification. Isotopic values from bone collagen have been inconsistent with this hypothesis, showing temporal and regional fluctuations that have led to hypotheses of sporadic overreliance on this super-crop. Following Katzenberg’s suggestion that intake of this carbohydrate should be measured through apatite rather than protein tissue, and with the permission of the...
Testing the Paleo-Agulhas Plain Migration Ecosystem hypothesis with serial isotope analysis of fossil fauna (2015)
In contrast to Holocene sites, late Pleistocene sites along the South African south coast are dominated by large and medium-sized ungulates, many of which are typical of open-habitat grasslands and migration ecosystems. During much of the late Pleistocene, sea levels were substantially lower, exposing the Paleo-Agulhas Plain up to 100 km south of the modern coastline. The Migration Ecosystem hypothesis proposes that the Paleo-Agulhas Plain supported a migration ecosystem driven by summer...
Tiwanaku Pastoralism, Highland Bofedales, and Grasslands in Far Southern Peru: Creating a Strontium Baseline and Isoscape to Understand Cultural Connections (2019)
This is an abstract from the "Exploring Culture Contact and Diversity in Southern Peru" session, at the 84th annual meeting of the Society for American Archaeology. Camelid pastoralism was an economic mainstay of the Tiwanaku Empire (~AD 600-1000). Communities of colonists in Moquegua, Peru were connected to their Tiwanaku capital near Lake Titicaca through an informal trade route traversing the altiplano. One component of Tiwanaku hegemony involved the movement of goods via llama caravans...
Tree Ring Isotope Record of Climate Change at the Ramaditas site in the Atacama Desert of Northern Chile (2015)
The Ramaditas archaeological site in the Atacama Desert of northern Chile provides evidence for cultural adaptations during wetter environmental conditions in an otherwise arid environment. From 2.0 – 2.5 kyr B.P., regional population increased and a cultural shift toward agricultural based communities occurred. Tree samples collected from the site provide a high-resolution record of increased water availability as recorded by tree ring oxygen and carbon isotopes. Prosopis tamarugo logs from...
Using Traditional and Nontraditional Isotopic Tracers of Diet and Mobility of Brazilian Shell Mound Populations (ca. 8000–1000 years BP) (2023)
This is an abstract from the "SAA 2023: Individual Abstracts" session, at the 88th annual meeting of the Society for American Archaeology. The study of shell mounds can shed light on human occupation and adaptations at coastal environments worldwide. In South America, human groups occupied the territory close to the Atlantic Ocean for millennium (ca. 8000 to ⁓1000 years BP), building hundreds of shell mounds, some with impressive dimensions. After 2000 BP, it is assumed that these populations...
Village Aggregation and Native Subsistence Practices at a Middle Woodland Mound Center, Gulf Coast Florida, USA (2018)
Current research at Garden Patch (8DI4), a Middle Woodland mound center with circular village construction in northern peninsular Gulf Coast Florida, provide quantitative insights into the timing and temporality of monument construction and village aggregation. Here, we combine previously modelled radiocarbon assays with new isotopic data on season of collection and habitat of exploitation. The four-phase model of site occupation when combined with the new isotopic data provide new insights into...