A materialidade lítica do sítio Morro da Janela I (MT-SL-31): fortalecimento dos estudos tecno-funcionais no estado do Mato Grosso

Abstract

This paper presents an analysis of the lithic material from Trench I, lines N11 and N13, between levels 13 and 35, of the Morro da Janela I archaeological site, located in the municipality of Poxoréu, Jarudore district, Mato Grosso. The site, characterized as a shelter under sandstone rock about 80 metres long, was excavated in 1994 as part of the Tombador Project, coordinated by Prof. Dr. Irmhild Wüst, and the material was later sent on loan to the Goiano Institute of Prehistory and Anthropology (IGPA). The analyses were based on the Techno-Functional Approach and the notion of the operative chain, seeking, through technography, to recognize the technical essence present in the chipping structures of the artefacts, with the aim of understanding the diversity of tools used by the populations that occupied the region over a wide range of time periods, from the Early to the Recent Holocene. The results indicate the predominance of low-visibility tools, mostly associated with the Debitage Principle and, to a lesser extent, the Afordance Principle, although pieces with a higher degree of technical standardization (latu sensu Modelling) were also identified. The predominance of chips of different sizes, related to different moments in the operating chain, suggests that the site functioned as a space of intense technical activity, in which the production of lithic tools played an important role in the social dynamics of the site.