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"Pool, Christopher"
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The Oxford handbook of Mesoamerican archaeology
Unique among recent works, this title brings together in a single volume article-length regional syntheses and topical overviews written by active scholars in the field of Mesoamerican archaeology.
Book
Integrative detection and analysis of structural variation in cancer genomes
Structural variants (SVs) can contribute to oncogenesis through a variety of mechanisms. Despite their importance, the identification of SVs in cancer genomes remains challenging. Here, we present a framework that integrates optical mapping, high-throughput chromosome conformation capture (Hi-C), and whole-genome sequencing to systematically detect SVs in a variety of normal or cancer samples and cell lines. We identify the unique strengths of each method and demonstrate that only integrative approaches can comprehensively identify SVs in the genome. By combining Hi-C and optical mapping, we resolve complex SVs and phase multiple SV events to a single haplotype. Furthermore, we observe widespread structural variation events affecting the functions of noncoding sequences, including the deletion of distal regulatory sequences, alteration of DNA replication timing, and the creation of novel three-dimensional chromatin structural domains. Our results indicate that noncoding SVs may be underappreciated mutational drivers in cancer genomes.
The authors present an integrative framework for identifying structural variants (SVs) in cancer that applies optical mapping, Hi-C, and whole-genome sequencing. They find SVs affecting distal regulatory sequences, DNA replication, and three-dimensional chromatin structure.
Journal Article
Creating Memory and Negotiating Power in the Olmec Heartland
The creation of political landscapes requires the production of places made significant through acts of social remembering. The Gulf lowlands of Mexico exhibit some of the best known acts of social remembering in Mesoamerican prehistory. In this article, we engage political and practice-based frameworks for understanding the process of collective remembering in an examination of how the Olmecs and their successors inscribed their landscape with buildings, monuments, and rock art in ways that invoked the past while reframing it within the needs of their present. In particular, we explore the Olmecs' memorialization of individuals and events in sculptures and offerings and their creation of narratives through the juxtaposition of sculptures and architecture. We then examine the creation and erasure of collective memory at the regional center of Tres Zapotes as expressed in the biographies of six monuments. We end with a comparison of \"metropolitan\" and hinterland carvings recorded in regional survey around Tres Zapotes. These examples situate social memory as an evolving entity molded and stretched by competing interests in an ongoing process of conflict and negotiation.
Journal Article
The Archaeology of Disjuncture
Reconstructing human interaction systems has been a major objective of archaeological research, but we have typically examined the topic in a conceptually limited manner. Most studies have—intentionally or unintentionally—focused on how trade, communication, conquest, and migration foster cultural similarities over long distances. It has largely been a positivistic endeavor that exclusively features groups linked through a single network but glosses over how alternative networks intersect with the former through common nodes. Models of long-distance interaction have largely ignored variation in how external influences are negotiated across space within the receiving region. We adapt Arjun Appadurai’s concept of disjuncture to conceptualize how human groups negotiate cultural messages transmitted through multiscalar interaction networks. Disjuncture fundamentally refers to the decoupling of different facets of culture, economy, and politics where human interactions follow variable trajectories through space. The variability with which human groups reconcile foreign cultural information within local social networks leads to cultural diversity across space in the receiving region. We use the concept to detail the variability with which Teotihuacan symbols, ideology, and economic influences were adopted across the Tuxtlas region of southern Veracruz, Mexico.
Journal Article
TRANSISTHMIAN TIES: EPI-OLMEC AND IZAPAN INTERACTION
In 1943, Matthew Stirling (1943:72) once opined, “Izapa appears to be much more closely related to the earth-mound sites of southern Veracruz … than it does with sites in the Maya area.” Since then, scholars have postulated ties of varying strength between Late Formative polities on either side of the Isthmus of Tehuantepec. Ceramic similarities have been noted between southern Chiapas and the Gulf Coast, but discussion of Late Formative transisthmian interaction has focused primarily on sculptural similarities between Izapa and sites of the lower Papaloapan basin, including Tres Zapotes, El Mesón, and Alvarado. Indeed, Michael Coe (1965b:773) suggested that the Izapan art style may have originated on the Gulf Coast rather than on the Pacific slope. In this article, we reexamine Late Formative interaction between Izapa and Epi-Olmec polities with an expanded data set based on recent iconographic studies and archaeological investigations in and around Tres Zapotes.
Journal Article
The Environs of Tres Zapotes as the Find-Spot of the Tuxtla Statuette
The famous greenstone figure known as the Tuxtla Statuette is one of only 12 objects known to bear an epi-Olmec inscription and was the first to become known to scholarship. For more than a century its original find-spot was imprecisely and erroneously identified as lying in the township of San Andrés Tuxtla or, more generally, in the Tuxtla Mountains. Correspondence in the National Anthropology Archives of the Smithsonian Institution documents that the figure was found on the Hacienda de Hueyapan de Mimendi, near the colossal head of Tres Zapotes. Archival research in Mexico's National Museum of Anthropology and the Archivo General del Estado de Veracruz, as well as interviews with descendants of owners of the Hacienda de Hueyapan and the statuette, allow us to confirm several features of the Smithsonian correspondence. The data indicate that the statuette was found within or very near the epi-Olmec regional center of Tres Zapotes and within the township of Santiago Tuxtla.
Journal Article
FORMATIVE OBSIDIAN PROCUREMENT AT TRES ZAPOTES, VERACRUZ, MEXICO: IMPLICATIONS FOR OLMEC AND EPI-OLMEC POLITICAL ECONOMY
We report the results of chemical sourcing of obsidian artifacts from Tres Zapotes using X-ray fluorescence analysis. This is the first obsidian sourcing study for this major Olmec and Epi-Olmec center in which samples are drawn from secure archaeological proveniences specifically assigned to Early, Middle, Late Formative, and Protoclassic periods. We employed a stratified random sampling strategy to select 180 obsidian artifacts from excavated assemblages, supplementing the random sample with another 24 specimens drawn from rare visual categories. Consequently, we are able to characterize changes in the relative importance of different obsidian sources in the political economy of Tres Zapotes across the critical transition from Olmec to Epi-Olmec society with greater confidence than has been possible for the Gulf lowlands while extending our observations to the full sample of 5,713 visually characterized obsidian artifacts—2,695 of which come from the well-dated Formative contexts examined in this article. Our study confirms the absence of obsidian from Otumba and from Guatemalan sources in the excavated Olmec assemblage in favor of sources from eastern Puebla and Veracruz, supporting a model of overlapping autonomous networks for obsidian procurement at Gulf Olmec sites. Presence of the Guatemalan San Martín Jilotepeque source in Epi-Olmec contexts may relate to the reestablishment of trans-Isthmian contacts, while increasing prevalence of Zaragoza-Oyameles obsidian from eastern Puebla marks the beginning of a long-term trend. Although more even representation of obsidian sources in Epi-Olmec contexts is consistent with the hypothesized transition from an exclusionary Olmec political economy toward a more “corporate” system associated with power sharing among factional leaders at Tres Zapotes, neither Olmec nor Epi-Olmec elites monopolized a particular obsidian source or technology.
Journal Article
ASKING MORE AND BETTER QUESTIONS: OLMEC ARCHAEOLOGY FOR THE NEXT KATUN
The two decades since the publication of Regional Perspectives on the Olmec have seen a great expansion of basic archaeological research in the “Olmec heartland” region of Mexico's southern Gulf lowlands as well as important new work on Formative period interregional interaction and its effects on local economies and polities. Olmec research, however, has not achieved as prominent a place as it merits in comparative research on the evolution of social complexity. In this essay I review this work and make some suggestions for future research directions.
Journal Article
Current Research on the Gulf Coast of Mexico
The Gulf Coast of Mesoamerica is a culturally and environmentally heterogeneous area that encompasses the lowlands along the Gulf of Mexico as well as rugged inland highlands. Blessed with a wealth of valued resources and a favorable geographical setting, the pre-Hispanic Gulf Coast played a critical role as a cultural and economic crossroads, and its cultures contributed vital elements to other Mesoamerican traditions. Gulf Coast archaeology currently is experiencing the most active period in its history. This recent research underscores the diversity and dynamism of the area's cultures and environment. An enormous expansion of settlement pattern studies reveals considerable diversity in sociopolitical organization, urbanism, and human-land relationships. A second important trend focuses on documenting and understanding variation in craft production and exchange systems. A third is the continuing emphasis on interregional interaction through all time periods. These three foci merge in a growing interest in variation and change in Gulf Coast political economies. Future research will need to incorporate theoretical perspectives that focus on the generation of cultural variation, including agency-based models of technological choice and political economy, as well as those, like Darwinian approaches, that emphasize the differential persistence of variation.
Journal Article
The political economy of hazards and disasters
Throughout history, societies have had to decide whom to \"sacrifice\" and whom to help in times of disaster. This volume examines how elite groups attempt to maintain power through the use of particular economic, political, and ideological instruments and how both ruling elites and common people endeavor to create meaningful traditions while enduring hardship.The Political Economy of Hazards and Disasters demonstrates how vulnerability is economically constructed, primary producers adapt their production regimes, how traders and merchants adapt their practices, and how political economic objectives play out in recovery efforts.
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