Record Map (IMAGE) University of Pittsburgh Caption The study compared the record in the Pumacocha sediment core (PC) to various geological records from South America -- Cascayunga Cave (CC), the Quelccaya ice Cap (QIC), and the Cariaco Basin (CB) -- as well as the annual position of the Intertropical Convergence Zone (ITCZ). Credit U. of Pittsburgh Usage Restrictions None 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.