In a message dated 10/2/2006 5:45:10 P.M. Eastern Standard Time, [EMAIL PROTECTED] writes:
Chaco Canyon have all shared the feature of being > settled in a > marginal environment. Is a marginal environment a > prerequisite for "collapse"? Chaco may not have been so marginal at the outset. Chaco probably shared features with the fertile crescent (now basically desert) and Australia (later chapter) in that what was initially a good looking environment which could not restore itself over time. _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
