scholarly journals Spatial and temporal variations in streamflow, dissolved solids, nutrients, and suspended sediment in the Rio Grande Valley study unit, Colorado, New Mexico, and Texas, 1993–95

2002 ◽  
Author(s):  
Jesse Ballenger ◽  
Vance Holliday ◽  
Guadelupe Sanchez

Paleoindian occupations across the Southwest are known largely from surface artifact collections because relatively few in situ sites are known. Clovis is the exception, with one of the world’s highest concentrations of Clovis mammoth kills occurring in southeast Arizona (Murray Springs, Naco, and Lehner). Otherwise Clovis is thinly scattered across New Mexico, Chihuahua, and Sonora. Folsom is the most common Paleoindian projectile point type in the Southwest in terms of numbers, but is largely concentrated in the basins of the Upper Rio Grande valley in New Mexico and Colorado. Unfluted Paleoindian artifact styles are widely scattered throughout the region, but most are concentrated along the Upper Rio Grande valley.


The Condor ◽  
1966 ◽  
Vol 68 (6) ◽  
pp. 541-561 ◽  
Author(s):  
Ralph J. Raitt ◽  
Robert D. Ohmart

1996 ◽  
Vol 462 ◽  
Author(s):  
Nicholas E. Pingitore ◽  
David Hill ◽  
Joshua Villalobos ◽  
Jeff Leach ◽  
John A. Peterson

ABSTRACTICP-MS isotopie analysis of lead ceramic glazes suggests at least two sources were exploited by Ancestral Pueblo potters to obtain the lead raw material, presumably galena (PbS). Five Rio Grande lead glazeware sherds from the Sandia area and two found at Socorro share a common isotopie fingerprint. The temper of one of the Socorro sherds confirms an origin in the Sandia area; petrography of the temper of the second sherd does not tie to any known Socorro source rock. Two other glazeware sherds from Socorro have a distinctly different lead isotopie signature. A fifth Socorro glaze may be a mixture of the Sandia and Socorro lead source materials. The differences in lead isotopie signature thus accord well with mineralogical differences in the ceramic pastes. Lead isotopie signatures generated by ICP-MS analysis are a powerful new tool for grouping glazeware sherds, classifying individual samples, defining lead sources, and delineating trade routes.


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