Regional variation in the shift towards microlithization: The development of early microblade technology in North China

Abstract

We reconstruct the early developmental sequence of microblade technology in North China through comprehensive analysis of lithic remains dating from ∼27–20 cal. ka BP. Lithic analysis reveals that the earliest microblade technology emerged in North China at ∼27–26 cal. ka BP. The earliest microblades exhibit precocious features and coexisted with blade assemblages. The close technical affinity between microblade and blade assemblages suggests that the earliest microblade technology developed from blade technology which was likely introduced from Mongolia and Siberia around ∼27–26 cal. ka BP. Microblade technology developed in standardized ways after 26 cal. ka BP, suggesting that people in North China increased their reliance on reliable composite tools to acquire resources while practicing mobile lifeways. This trend is similar to the technological strategy pursued across broader regions of Northeast Asia to cope with climatic changes associated with the Last Glacial Maximum, yet the specific characteristics of microblade technology in North China reflect an adaptation to the local environment.