Paleo Slide Set: Climate and the Classic Maya Civilization
Dr. Jason Curtis holding the mud-water interface corer from Lake Chichancanab.

To retrieve sediment cores from both lakes, two different coring systems were used. 
For the top most sediments that are water-saturated and oozy, a mud-water interface corer, 
consisting of a clear polycarbonate tube (125 cm by 7 cm) was used. Deeper sections of the 
core that occur past the mud-water interface are retrieved in 1 meter intervals using a 
square-rod piston corer 

Photo Credits:
David A. Hodell 
Department of Geology, University of Florida