Sand transport graphic (IMAGE) Aarhus University Caption Simplified graphic showing long-shore transport of sands from the mouth of the Nile up along the Levantine coast (today Israel). Glass factories at Jalame and Apollonia used the sands in glass production during Roman and Byzantine times. Along the way North, some of the zircon minerals contained in the sands drop out leading to the different hafnium isotopic compositions of Egyptian and Levantine glass. Also shown is the location of Jerash, Jordan. Credit UrbNet, Aarhus University Usage Restrictions May only be used with appropriate caption and credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.