The Obsidian by Janelle Wong7/2/2023 ![]() Through field excavations and laboratory analyses, this dissertation explores whether the change in material culture represents cultural continuity or cultural change at the Black Mountain site. It represents one of the largest Black Mountain phase settlements and also contains a large Cliff phase room block. The Black Mountain site (LA 49), near Deming, NM, in the Lower Mimbres Valley, is the type site for the Black Mountain phase. ![]() Three processes have been proposed to account for the changes: depopulation followed by population replacement (immigration), population decrease with remaining groups changing material culture and reorganizing economic and social networks, or some combination of these scenarios. The scale (size of the population reorganizations), chronology (timing of the reorganizations), and nature (social processes behind the reorganizations) of these changes are not fully understood. The second represents the transition from the Black Mountain to the Cliff phase (1300 to 1450 A.D.). The first represents the transition from the Classic Mimbres period (1000 to 1150 A.D.) to the Black Mountain phase (1150 to 1300 A.D.). These periods are marked by dramatic changes in material culture, settlement reorganization, and population decline. and again around 1300 A.D.) during the Postclassic Period. ![]() ![]() In the Mimbres region of southwestern New Mexico, there are two notable periods of transition (around 1150 A.D. ![]()
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