Old Rocks
Diamond Member
Lordy, lordy, Walleyes, read a little further than the lead paragraphs, and quit making such a fool of yourself.
Disruption of patterns of rainfall. And less overall rainfall.
Land Use History of the Colorado Plateau-The Anasazi "Collapse"
'There was a major reshuffling of organizational systems once the Anasazi got here,' Dr. Ware said. 'That suggests there was a catastrophe.'
"It may have been a change in climate after all, but one different from the drought Dr. Van West questions. Recent climatological studies by other scientists suggest that rainfall patterns were disrupted in a way that might have made the Anasazi disillusioned with their old religion. Studying tree rings from 27 sites across the Southwest, Dr. Jeffrey Dean of the University of the Arizona tree-ring laboratory has found evidence of a major disruption in the area's typical rainfall. Suddenly, the customary pattern of heavy snows in the winter followed by summer monsoons had become unpredictable. Even if there was not a great drought, moisture may have been coming at the wrong times. The summer rains, so necessary to keep the spring crops from dying, were no longer reliable. The rain dances were not working anymore.
"'This would have represented a major upset,' Dr. Dean said. 'And it happens to occur exactly at the time when you're getting all these population movements and cultural changes
Disruption of patterns of rainfall. And less overall rainfall.
Land Use History of the Colorado Plateau-The Anasazi "Collapse"
'There was a major reshuffling of organizational systems once the Anasazi got here,' Dr. Ware said. 'That suggests there was a catastrophe.'
"It may have been a change in climate after all, but one different from the drought Dr. Van West questions. Recent climatological studies by other scientists suggest that rainfall patterns were disrupted in a way that might have made the Anasazi disillusioned with their old religion. Studying tree rings from 27 sites across the Southwest, Dr. Jeffrey Dean of the University of the Arizona tree-ring laboratory has found evidence of a major disruption in the area's typical rainfall. Suddenly, the customary pattern of heavy snows in the winter followed by summer monsoons had become unpredictable. Even if there was not a great drought, moisture may have been coming at the wrong times. The summer rains, so necessary to keep the spring crops from dying, were no longer reliable. The rain dances were not working anymore.
"'This would have represented a major upset,' Dr. Dean said. 'And it happens to occur exactly at the time when you're getting all these population movements and cultural changes