Age constraints on a Neogene tropical rainforest in China and its relation to the Middle Miocene Climatic Optimum
Age constraints on a Neogene tropical rainforest in China and its relation to the Middle Miocene Climatic Optimum
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中国新近纪热带雨林的年龄限制及其与中中新世最适气候的关系
DOI:
10.1016/j.palaeo.2019.01.019
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发表时间:
2019-03
期刊:
影响因子:
--
通讯作者:
Chang Su-Chin
中科院分区:
文献类型:
--
作者:
Zheng Daran;Shi Gongle;Hemming Sidney R.;Zhang Haichun;Wang Weiming;Wang Bo;Chang Su-Chin
Tropical rainforests have strongly influenced Earth systems throughout their evolutionary history. Plant taxa found in the Fotan Group of Fujian Province indicate that an Asian tropical rainforest prevailed in southeastern China during the Miocene. Abundant insect-bearing ambers co-occur with diagnostic plant fossils in outcrop. Fotan Group fossils demonstrate that highly diverse tropical ecosystems existed during the early Neogene in southeastern China. This study reports a robust40Ar/39Ar age of 14.7 ± 0.4 Ma for the Fotan fossils. This age constrains interpretations of 1) when tropical rainforest ecosystems developed in China, 2) whether the Fotan flora temporally overlapped with the Asian tropical forest in India, and 3) whether the Middle Miocene Climatic Optimum triggered expansion of tropical rainforests in Asia. A precise age for Fotan units provides important constraints on the biogeographic history of the field area and paleographic models linking Asian and Indian biota.
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