The characterization of CaCO3 in a geothermal environment : A sem/tem-eels study - Kim, Jin-Wook (Yonsei University. Department of Earth System Sciences) ; Kogure, Toshihiro (University of Tokyo. Department of Earth and Planetary Science) ; Yang, Kiho (Yonsei University. Department of Earth System Sciences) ; Kim, Sang-Tae (McMaster University. School of Geography and Earth Sciences) ; Jang, Young-Nam (Korea Institute of Geoscience and Mineral Resources) ; Baik, Hion-Suck (Korea Basic Science Institute) ; Geesey, Gill (Montana State University. Department of Microbiology)