Report of the Okayama University of Science - Mongolian Institute of  Paleontology and Geology Joint Expedition in 2016

IshIgakI S., Tsogtbaatar K., Saneyoshi M., Mainbayar B., Aoki K., Ulziitseren S., Imayama T., Takahashi A., Toyoda S., Bayardorj C., Buyantegsh B., Batsuk J., Purevsuren B., Asai H., Tsutanaga S., and Fujii K. 

Abstract. We briefly report the results of the Okayama University of Science (OUS) and Institute of Paleontology and Geology, Mongolian Academy of Sciences (IPG) Joint Expedition conducted in the Gobi Desert of Mongolia during the field season of 2016. We carried out geological surveys and fossil prospection in eight Upper Cretaceous fossil localities in South Gobi Aimag, southern Mongolia. Of these, Bayshin Tsav, Khoorai Tsav, Baishin Tsav West, Amtgai, and Amtgai North which are attributed to Baynshirenian age (Late Cretaceous). Shar Tsav which is assigned to Nemegtian age (Late Cretaceous), and two newly found ichnofossil sites in the northwest of Bayshin Tsav. The age of newly found ichnosites are unknown. We also visited Khongil Tsav, Burkhant, and Baynshire (Baynshirenian age, Late Cretaceous) in East Gobi Aimag for geological reconnaissance and rock sampling. We have collected 28 plaster jackets including an egg nest at Urlibe Khuduk, partial skeleton of a hadrosauroid at Bayshin Tsav, and a hadrosauroid pelvic part at Khoorai Tsav. Many fragmental body fossils of dinosaurs and turtles were also collected. In newly found ichnosites, we discovered many dinosaur footprints including extremely large footprints of sauropod. In the field work, we have collected geological samples for physical and chemical analysis by means of LA-ICPMS (Laser Ablation Inductively Coupled Plasma Mass Spectrometry), ESR (Electron Spin Resonance), and CL (Cathodeluminescence) methods. 

自然科学研究所研究報告

岡山理科大学

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