On Thursday, the scientists reported that an analysis of rings on a stalagmite from a cave near Jerusalem reveals a drier climate in the region at a time in history when the Roman and Byzantine empires were in decline.
The chemical composition of individual rings as small as one-hundredth of a millimeter across was analyzed by University of Wisconsin geologists, which formed the stalagmite growing up from the floor of the Soreq Cave near Jerusalem between 200 BC and 1100 AD.
“The climate was drier in the eastern Mediterranean between 100 AD and 700 AD, with steep drops in rainfall around 100 AD and 400 AD.; a period of waning Roman and Byzantine power in the region,” said Geologists John Valley and Ian Orland.