Mid-Cretaceous (Albian–Cenomanian) fossil woods from Hwawon-myeon in Jeollanam-do,Korea, and their palaeoclimatic implications |
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| Institution: | 1. Department of Geology, University of Wisconsin Oshkosh, Oshkosh, WI 54901, USA;2. Department of Geological and Mining Engineering and Sciences, Michigan Technological University, Houghton, MI 49931, USA;3. Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Zurich, 8092, CH, Switzerland;1. Museo Geominero, Instituto Geológico y Minero de España - IGME, Ríos Rosas 23, Madrid E-20003, Spain;2. Departamento de Sistemas y Recursos Naturales, E.T.S. de Ingeniería de Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, 28040, Madrid, Spain;3. CGG Services (UK) Ltd., Llandudno, North Wales LL30 1 SA, UK;1. Coal Geology and Organic Petrology Laboratory, Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, Jharkhand, India;2. Polymer Petroleum and Coal Chemistry Group, Materials Science & Technology Division, CSIR- North East Institute of Science and Technology, Jorhat 785006, Assam, India |
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| Abstract: | Two coniferous fossil wood taxa are reported from the Hwawon Formation (middle Cretaceous) at Hwawon-myeon in Jeollanam-do, Korea: Agathoxylon sp. and Taxodioxylon sp. Agathoxylon has a clear affinity with the Araucariaceae and its occurrence in the Hwawon Formation suggests that a dry and tropical–subtropical climate prevailed in this area during the middle Cretaceous. The presence of traumatic resin canals in the Taxodioxylon specimens indicates that flooding occurred repeatedly as part of an alternation between dry and rainy seasons. The low diversity observed for the Cretaceous fossil wood assemblages from the Korean Peninsula could be explained by the palaeoclimatologically stressful environment, as a dry tropical–subtropical climate prevailed over the region at that time. |
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