Mark Clementz in the Andes (IMAGE) Geological Society of America Caption Mark Clementz doing fieldwork in the High Andes (Puna Plateau) of northwest Argentina to understand paleoenvironments in the Cenozoic. Credit: Mark Clementz. Credit Mark Clementz Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.