Evaluating Settlement Structures in the Ancient Near East using Spatial Interaction Entropy Maximization

We explore settlement structures and hierarchy found in different archaeological periods in northern, specifically the Khabur Triangle (KT), and southern Mesopotamia (SM) using a spatial interaction entropy maximization (SIEM) modeling and simulation method. Regional settlement patterns are investigated in order to understand what feedback levels for settlement benefits, or incentives, and abilities to move or disperse between sites in a landscape and period could have enabled observed settlement structures to emerge or be maintained. Archaeological and historical data are then used to interpret the best results. We suggest that in the Late Chalcolithic (LC) and first half of the Early Bronze Age (EBA), the KT and SM appear to have comparable urban patterns and development, where settlement advantage feedbacks and movement are similarly shaping the two regions for those periods. Within period variations, such as restrictions to population diffusion or movement in the EBA, are possible. In the KT during the Middle Bronze Age (MBA), multiple centers begin to emerge, suggesting a lack of social cohesion and/or political fragmentation. This is similar to SM in the MBA, but we also see the emergence of a single, dominant site. In the Iron Age (IA), movement in the KT likely becomes the least constrained in all assessed periods, as socio-political cohesion facilitates this process, with small sites now the norm and dominance by one state over the region is evident. For the same period in SM, a single site (Babylon) obtains significant settlement advantages relative to its neighbors and easy movement enables it to become far larger in size and likely socially, economically, and politically dominant. Overall, the results demonstrate that the method is useful for archaeologists and social theorists in allowing them to compare different archaeological survey results, with varied spatial dimensions and diachronically, while providing a level of explanation that addresses empirical settlement patterns observed

Mid-Holocene Dates for Organic-Rich Sediment, Palustrine Shell, and Charcoal from Southern Iraq

We present the results of accelerator mass spectrometry (AMS) radiocarbon dating of 11 samples collected from 4 locations in southern Iraq. As a result of the hiatus in fieldwork in that region since 1990, and the antiquity of the majority of archaeological excavations conducted there, the record of 14C dates for southern Mesopotamia is patchy for all periods. This is especially true for the mid-Holocene, when the world’s oldest and longest-sustained urban system first emerged there. The dates here reported not only make a significant contribution to available dates for this important region and period; they fill specific gaps in crucial geographic coverage, and shed light on the extent of marshland boundaries and the antiquity of settlement at key urban centers.The Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform February 202

New insights on the role of environmental dynamics shaping southern Mesopotamia: from the pre-Ubaid to the early Islamic period

Recent fieldwork and archival sedimentary materials from southern Iraq have revealed new insights into the environment that shaped southern Mesopotamia from the pre-Ubaid (early Holocene) until the early Islamic period. These data have been combined with northern Iraqi speleothem, or stalagmite, data that have revealed relevant palaeoclimate information. The new results are investigated in light of textual sources and satellite remote sensing work. It is evident that areas south of Baghdad, and to the region of Uruk, were already potentially habitable between the eleventh and early eighth millennia B.C., suggesting there were settlements in southern Iraq prior to the Ubaid. Date palms, the earliest recorded for Iraq, are evident before 10,000 B.C., and oak trees are evident south of Baghdad in the early Holocene but disappeared after the mid-sixth millennium B.C. New climate results suggest increased aridity after the end of the fourth millennium B.C. For the third millennium B.C. to first millennium A.D., a negative relationship between grain and date palm cultivation in Nippur is evident, suggesting shifting cultivation emphasising one of these crops at any given time in parts of the city. The Shatt en-Nil was also likely used as a channel for most of Nippur's historical occupation from the third millennium B.C. to the first millennium A.D. In the early to mid-first millennium A.D., around the time of the Sasanian period, a major increase in irrigation is evident in plant remains, likely reflecting large-scale irrigation expansion in the Nippur region. The first millennium B.C. to first millennium A.D. reflects a relatively dry period with periodic increased rainfall. Sedimentary results suggest the Nahrawan, prior to it becoming a well-known canal, formed an ancient branch of the Tigris, while the region just south of Baghdad, around Dalmaj, was near or part of an ancient confluence of the Tigris and Euphrates

If the Past Teaches, What Does the Future Learn?: Ancient Urban Regions and the Durable Future

How can we transform urban environments to encourage durability and mediate the social price of myriad risks and vulnerability? Our work here is to build a bridge from archaeology to mainstream architectural and design theory. The study of places, landscapes, and regions links the two fields. Architecture can be shaped and enhanced by the long-term cultural and geographic perspective afforded by archaeology; architecture can offer archaeology a ride into the future. The bridge unites three domains: material, social, and aesthetic. We look to the past to find material technologies—new engineering and conceptual solutions to an array of problems—and the past obliges with many examples.Landscape Architectur

Timing and causes of mid-Holocene mammoth extinction on St. Paul Island, Alaska.

Relict woolly mammoth (Mammuthus primigenius) populations survived on several small Beringian islands for thousands of years after mainland populations went extinct. Here we present multiproxy paleoenvironmental records to investigate the timing, causes, and consequences of mammoth disappearance from St. Paul Island, Alaska. Five independent indicators of extinction show that mammoths survived on St. Paul until 5,600 ± 100 y ago. Vegetation composition remained stable during the extinction window, and there is no evidence of human presence on the island before 1787 CE, suggesting that these factors were not extinction drivers. Instead, the extinction coincided with declining freshwater resources and drier climates between 7,850 and 5,600 y ago, as inferred from sedimentary magnetic susceptibility, oxygen isotopes, and diatom and cladoceran assemblages in a sediment core from a freshwater lake on the island, and stable nitrogen isotopes from mammoth remains. Contrary to other extinction models for the St. Paul mammoth population, this evidence indicates that this mammoth population died out because of the synergistic effects of shrinking island area and freshwater scarcity caused by rising sea levels and regional climate change. Degradation of water quality by intensified mammoth activity around the lake likely exacerbated the situation. The St. Paul mammoth demise is now one of the best-dated prehistoric extinctions, highlighting freshwater limitation as an overlooked extinction driver and underscoring the vulnerability of small island populations to environmental change, even in the absence of human influence

Timing and causes of mid-Holocene mammoth extinction on St. Paul Island, Alaska

Relict woolly mammoth (Mammuthus primigenius) populations survived on several small Beringian islands for thousands of years after mainland populations went extinct. Here we present multiproxy paleoenvironmental records to investigate the timing, causes, and consequences of mammoth disappearance from St. Paul Island, Alaska. Five independent indicators of extinction show that mammoths survived on St. Paul until 5,600 ± 100 y ago. Vegetation composition remained stable during the extinction window, and there is no evidence of human presence on the island before 1787 CE, suggesting that these factors were not extinction drivers. Instead, the extinction coincided with declining freshwater resources and drier climates between 7,850 and 5,600 y ago, as inferred from sedimentary magnetic susceptibility, oxygen isotopes, and diatom and cladoceran assemblages in a sediment core from a freshwater lake on the island, and stable nitrogen isotopes from mammoth remains. Contrary to other extinction models for the St. Paul mammoth population, this evidence indicates that this mammoth population died out because of the synergistic effects of shrinking island area and freshwater scarcity caused by rising sea levels and regional climate change. Degradation of water quality by intensified mammoth activity around the lake likely exacerbated the situation. The St. Paul mammoth demise is now one of the best-dated prehistoric extinctions, highlighting freshwater limitation as an overlooked extinction driver and underscoring the vulnerability of small island populations to environmental change, even in the absence of human influence