IMHICIHU   13380
INSTITUTO MULTIDISCIPLINARIO DE HISTORIA Y CIENCIAS HUMANAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Morphological diversification of stemmed projectile points of Patagonia
Autor/es:
CARDILLO, M. Y J. CHARLIN
Reunión:
Workshop; 1th worfshop "Multidisciplinary approaches to the study of stone age weaponry"; 2011
Resumen:
The aim of this work is to model patterns of morphological variation in middle-late Holocene stemmed projectile points from Patagonia through comparative methods. With this purpose we explore the potential of different analytical strategies using projectile point shapes, obtained by means of geometric morphometrics. Phylogenetic, spatial and environmental variation were used to build a set of statistical hypothesis to explain the morphological patterns in different scales. Morphological data comes from digitalized images of published projectile points for different patagonian areas. Morphometric characters were obtained using landmark and semilandmarkdescriptors. Mean shape by area was computed and used in cladistic analysis to model diversification trends.Then, phylogenetic, geographical and environmental coordinates were estimated for each data set and used as predictor variables in multiple regression procedures. Different models were compared based on statistical significance, explained variance and relative complexity. Mobility, interaction and change in middle-late Holocene human populations in Patagonia can be discussed in light of these results.