Intentional fragmentation of blades in the initial upper Paleolithic industries of the Kara-Bom site (Altai, Russia)

Abstract Recent investigations have highlighted an Asian variant of the so-called Initial Upper Paleolithic (IUP) broadly comparable in age and material culture to techno-complexes further to the west, but also showing distinct derived features. Here, we describe and provide corroborating evidence for another distinct technology employed in the Initial Upper Paleolithic of Kara-Bom site, Russian Altai, − intentional fragmentation (IF). The most effective means of understanding knapping technology are refitting studies of archaeological collections. This article examines several examples of refitted fragmented cores and blades, as well as debitage as the by-product of blank breakage. On the basis of refitting analysis, the morphological attributes of fragmentation and its by-product intermediate flakes are defined. This intentional approach was used to segment large blades partially transported to the site. \IF\ produced large blade fragments representing multi-functional tool blanks and burin-cores for bladelet production