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The pressure knapping technique develops circa 25,000 cal BP in Northeast Asia and excels at producing highly standardized microblades. Microblade pressure knapping spreads throughout most of Northeast Asia up to the Russian Arctic, and Alaska, in areas where the human presence was unknown. Swan Point CZ4b is the earliest uncontested evidence of human occupation of Alaska, at around 14,000 cal BP. It yields a pressure microblade component produced with the Yubetsu method, which is widespread in Northeast Asia during the Late Glacial period. Through the techno-functional analysis of 634 lithic pieces from this site, this study seeks to identify the techno-economical purposes for which the Yubetsu method was implemented. Data show that the microblade production system is related to an economy based on the planning of future needs, which is visible through blanks standardization, their overproduction, their functional versatility, and the segmentation of part of the chaîne opératoire. This expresses the efficiency and economic value of the microblade production system. The flexible use of pressure microblades identified at Swan Point CZ4b is also found in Japan, Korea, Kamchatka, and the North Baikal region, suggesting that their modes of use accompany the spread of early microblade pressure knapping over an immense territory across Beringia. [ABSTRACT FROM AUTHOR]

Cobble tools can provide useful information on the economy of sites and the function of activity areas. They can also reveal, through use-wear analysis, activities that would otherwise be invisible in the archaeological record. The use-wear analysis of cobble tools in the ca. 10,000 cal bp occupation (Component 2) of Little Panguingue Creek (Nenana River Valley, Alaska) offers new insights into the function of the site. Nine cobble tools (or fragments) have been found in this component. Most of these tools were used as hammerstones and clearly involved in lithic production at different stages of the knapping process. At least one cobble tool was used in the processing of pigments by pounding. Although so far only one Occupation Unit (U1) has been found, there are some indications that there may be a larger occupation than just a knapping workshop. The hidden activities revealed here through use-wear analysis add evidence that indicates that Little Panguingue Creek may not be just an ephemeral knapping station to exploit the local raw materials for microblade and tool production, but a larger occupation with various activities being carried out. [ABSTRACT FROM AUTHOR]

Swan Point in central Alaska contains the oldest recognized human occupation in Alaska (Cultural Zone 4b [CZ4b]), dating to circa 14,000 cal BP. This component consists of a microblade and burin industry with clear technological ties to the Siberian Upper Paleolithic Diuktai Culture. Through the systematic use of the Yubetsu method for the production of microblades, Swan Point is technologically more similar to Siberian microblade sites than to later-age (Denali complex) microblade sites in Alaska. The Yubetsu method is the hallmark of the Diuktai Culture, and in Alaska, Swan Point CZ4b is the only component with systematic production of microblades using the Yubetsu method. Other late Pleistocene and Holocene microblade sites in Alaska have an industry based on Campus-style, conical, or tabular microblade cores. Analysis of the collection furthers our understanding of how CZ4b relates to previous Siberian Diuktai-related assemblages and to later Alaskan Denali-related sites. We interpret the CZ4b component as representing a brief single event that has major cultural and technological implications for the early colonization process of North America. [ABSTRACT FROM AUTHOR]

This article is a critical review of published data from the earliest evidence of pressure knapped microblade technology from various regions in Northeast Asia (Siberia, Korea, China, Mongolia, Japan, Sakhalin, and Russian Far East), including discussions not only on published dates, but also on published artifacts (drawings and photos) relating to these assemblages. The issue concerning the geographical and chronological origin of microblade technology in Northeast Asia remains a widely debated concern, not only as new data emerge, but also due to researchers having different definitions of the term “microblade” and “microblade core”. In this case, by microblade technology, I refer to the systematic production of microblades using the pressure knapping technique. I therefore review the data in light of this defining feature and conclude that, based on the present state of research, pressure knapping microblade technology probably emerged in the Far East (China, Korea, or Japan) around 30,000–25,000 cal BP, in spite of most authors considering that microblade technology emerged in southern Siberia 40,000–35,000 years ago. In the discussion section, I argue about the potential role of obsidian in the emergence of pressure knapped microblade technology. [ABSTRACT FROM AUTHOR]

Researchers have explored how hearths were used and the composition of fuel to understand cultural differences and environmental adaptations. However, scant research has been conducted to understand and document methods for producing fires. Given the long-lasting durability of stone, the stone-on-stone method for producing fire with a strike-a-light will survive for thousands of years in the archaeological record; hence it is important to recognize and document these tools. This paper will present an artifact used as a strike-a-light for producing fire in the subarctic region of interior Alaska (middle Tanana Valley) some 5,500 years ago. The strike-a-light recognized at Goodpaster-IV is, to our knowledge, the most ancient example currently known in the American Subarctic. By reviewing the current state of research on European strike-a-lights from the French Mesolithic and Neolithic and describing use-wear analysis of the strike-a-light, we demonstrate important characteristics that reveal how strike-a-light tools were implemented in prehistory. [ABSTRACT FROM AUTHOR]