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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Massie, Ashtin Fike, David A. Munoz, Samuel E. Gruley, Kristine E. Schroeder, Sissel Williams, John W. |
| Spatial Coverage | Illinois |
| Description | Author Affiliation: Munoz SE ( Departments of Geography and semunoz@wisc.edu.); Gruley KE ( Departments of Geography and.); Massie A ( Departments of Geography and.); Fike DA ( Department of Earth and Planetary Sciences, Washington University, Saint Louis, MO 63130.); Schroeder S ( Anthropology and.); Williams JW ( Departments of Geography and Center for Climatic Research, University of Wisconsin-Madison, Madison, WI 53706); |
| Abstract | Here we establish the timing of major flood events of the central Mississippi River over the last 1,800 y, using floodwater sediments deposited in two floodplain lakes. Shifts in the frequency of high-magnitude floods are mediated by moisture availability over midcontinental North America and correspond to the emergence and decline of Cahokia--a major late prehistoric settlement in the Mississippi River floodplain. The absence of large floods from A.D. 600 to A.D. 1200 facilitated agricultural intensification, population growth, and settlement expansion across the floodplain that are associated with the emergence of Cahokia as a regional center around A.D. 1050. The return of large floods after A.D. 1200, driven by waning midcontinental aridity, marks the onset of sociopolitical reorganization and depopulation that culminate in the abandonment of Cahokia and the surrounding region by A.D. 1350. Shifts in the frequency and magnitude of flooding may be an underappreciated but critical factor in the formation and dissolution of social complexity in early agricultural societies. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 20 |
| Volume Number | 112 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2015-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Floods Indians, North American Archaeology Carbon Radioisotopes Geologic Sediments Chemistry History, Medieval Illinois Mass Spectrometry Particle Size Historical Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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