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Alluvial cycles, climate, and puebloan settlement shifts near Zuni Salt Lake, New Mexico, USA by Gary Huckleberry; Andrew I. Duff is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract Twenty‐seven ^14^C dates from alluvial deposits and soils exposed in modern arroyos near Zuni Salt Lake, New Mexico, provide evidence for past episodes of piedmont and valley entrenchment by low‐order ephemeral streams. We recognize two episodes of entrenchment at A.D. 900–1050 and A.D. 1300–1400 that correlate to other arroyo‐cutting events in the region. Episodes of piedmont and valley entrenchment are followed by approximately 200–300 years of aggradation until arroyos are filled and shallow flooding with expansive sedimentation returns, completing an alluvial cycle. Many alluvial cycles appear synchronous across much of the southern Colorado Plateau and are likely linked to changes in climate and flood regime. Flooding on small basin drainages near Zuni Salt Lake is related to the Southwest summer monsoon, a meteorological event that is poorly linked to El Niño. Alluvial cycles on small basin drainages affected indigenous floodwater farming by locally lowering water tables and reducing irrigable area during phases of entrenchment and contributed to the aggregation of Puebloan communities on the southern Colorado Plateau in the A.D. 1300s. © 2008 Wiley Periodicals, I

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Author

Gary Huckleberry; Andrew I. Duff

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0883-6353)

Published

2007

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)