Stable Carbon Isotope Enrichment Before Late Miocene and Its Iimplication for Landscape Change in the Amazon Basin

Donghyun Kim, Seoul National University, Seoul, Korea, Republic of (South), Yong Il Lee, Seoul National University, School of Earth and Environmental, Seoul, South Korea, Kiseong Hyeong, KIOST Korea Institute of Ocean Science and Technology, Ocean Georesources Research Department, Busan, South Korea and Yoo Chan Min, Korea Institute of Ocean Science & Technology, Seoul, Korea, Republic of (South)