| 内蒙克什克腾旗上新世含圆球形钙质结核古沙丘的发现 |
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| 关键词:Chifeng Baicha River basal ancient dune calcareous concretions |
| 基金项目:地质调查项目(编号: K50E006017)；(编号: K50E006018)；(编号: K50E007017)；(编号: K50E007018) |
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| 摘要: |
| The Discovery of the Pliocene Ancient Dune with Spherical Calcareous Concretions in Hexigten Banner, Inner Mongolia |
| A Pliocene ancient dune was discovered for the first time in Baicha River basalt on the southern bank of the Xilamulun River in northern Chifeng. This discovery proves that Baicha River valley area in northern Chifeng also had the arid circumstance with strong wind which was required for the formation of an ancient dune, quite similar to the extensive growth of grass dunes in the near-by area (in Xilamulun River valley and the high plateau consisting of Hannuoba Formation). This paper also demonstrates the finding of calcareous concretions with excellent sphericity in the ancient dune, whose diagenesis and ancient climate change significance deserve further investigation. |
| YAN Xi-li,ZHAO Xi-tao,HAO Bin.2010.The Discovery of the Pliocene Ancient Dune with Spherical Calcareous Concretions in Hexigten Banner, Inner Mongolia[J].Acta Geoscientica Sinica,31(6):893-896. |
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