scholarly journals Bed-material entrainment and associated transportation infrastructure problems in streams of the Edwards Plateau, central Texas

Fact Sheet ◽  
2008 ◽  
Author(s):  
Franklin T. Heitmuller ◽  
William H. Asquith
2005 ◽  
Vol 26 (3) ◽  
pp. 289-329 ◽  
Author(s):  
Peter Pagoulatos

This article presents an experimental study concerning the use of thermally altered stone, commonly referred to as fire-cracked, or burned rock. A series of controlled cooking experiments were initiated as limestone cobbles were placed within a prepared earth-oven and re-heated; this type of earth-oven is similar to those found within prehistoric burned rock mounds on the Edwards Plateau of central Texas. Twelve experiments were conducted in this study, as four different sets of cobble assemblages were each re-heated three times, at six, twelve, twenty-four, and forty-eight hour intervals. These heated limestone cobbles were then analyzed for thermal alteration characteristics such as color change, cracking, and spalling, for comparative purposes. Quantitative analyses were then applied to the data in order to establish whether different patterns of thermal alteration exist dependent upon short-term and long-term re-uses.


1948 ◽  
Vol 13 (3) ◽  
pp. 227-232 ◽  
Author(s):  
C. H. Webb

Studies of Louisiana's prehistory have been devoted largely to the pottery-making and mound-building cultures. The topography of the state is primarily responsible for this fact, since the delta lands of southern Louisiana and the wide, fertile river valleys of the northern part were particularly suitable for the agricultural peoples whose numerous sites have attracted attention. Witness to this fact is the long sequence of pottery-containing cultures (Tchefuncte, Marksville, Troyville, Coles Creek, Plaquemine, historic Natchez) delineated by Ford, Willey, and Quimby in central and southern Louisiana, while the Red and Ouachita River valleys in the northern portion present another series of culture periods (Marksville, Coles Creek, Gahagan, Bossier, Belcher, Glendora) which culminate in the historic Caddo.Despite these facts, evidences of pre-pottery cultures are appearing in the state and these may be expected to increase as more careful investigations are pursued. This could be anticipated from the situation in surrounding states—the Edwards Plateau culture of central Texas, the Ozark Bluff Dweller culture of Arkansas and the several strata which underlie the pottery containing cultures in the Southeast, recently reviewed by Haag.


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