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Full-Text Articles in Paleobiology
Another Possible Source Of Archeological Maize Found In Chaco Canyon, Nm: The Tohatchi Flats Area, Nm, Usa, Deanna Grimstead, Sharon M. Buck, Bradley J. Vierra, Larry V. Benson
Another Possible Source Of Archeological Maize Found In Chaco Canyon, Nm: The Tohatchi Flats Area, Nm, Usa, Deanna Grimstead, Sharon M. Buck, Bradley J. Vierra, Larry V. Benson
United States Geological Survey: Staff Publications
Understanding the linkage and relationship between Chaco Canyon and its residents to surrounding communities has been a primary research question for several decades. This research has focused on identifying the Chacoan road systems, similar architectural designs, and the sourcing of economic and non-economic goods to outlier communities of origin. Extensive fieldwork has been completed to identify potential source regions of Chacoan corncobs, but the San Juan Basin and surrounding regions are vast and many potential agricultural features remain uninvestigated. One such region is the Tohatchi Flats, located near modern day Gallup, New Mexico. This paper uses 87Sr/86Sr …
Evidence Of Holocene Climate Change In A Nebraska Sandhills Wetland, Barbara Nicholson, James B. Swinehart
Evidence Of Holocene Climate Change In A Nebraska Sandhills Wetland, Barbara Nicholson, James B. Swinehart
Great Plains Research: A Journal of Natural and Social Sciences
The Nebraska Sandhills consist of 50,000 km2 of dunes, currently stabilized by vegetation. Radiocarbon dates of paleosols, blocked paleovalleys, and sand beds found in interdunal wetlands suggest that the Holocene had significant periods of dune reactivation. A paleoecological investigation was conducted in Jumbo Valley, NE, in an interdunal wetland known to contain sand layers interbedded with peat. The sedimentary record in two cores is continuous, except for some loss due to surficial burns. Macrofossils indicate that the late Pleistocene was cool and wet, with current vegetation establishing around 12,000 years ago. Sand and bulk density profiles reveal significant periods …