The Discovery of Silicified Wood in the Early Carboniferous Strata on the Northern Margin of Yili Block, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on">West Tianshan Mountains</st1:place>, and Its Significance

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The Discovery of Silicified Wood in the Early Carboniferous Strata on the Northern Margin of Yili Block, West Tianshan Mountains, and Its Significance

详细信息

责任者：Bai Jianke (Xi’an Center ; China Geological Survey ; Xi’an 710054 ; China) ; Li Zhipei
刊名：Geological Bulletin of China
出版年：2011
卷期：30(10)
关键词：木化石 ; fossil wood ; 早石炭世 ; Lower Carboniferous ; 天山 ; Tianshan Mountains ; 伊犁盆地 ; Yili Basin
页码：p.1557-1562
图表：2 illus., 1 plate, 28 refs.
分类号：1102
issnNo：ISSN1671-2552
isbnNo：CN11-4648/P

摘要

Recently silicified wood was discovered for the first time in Qiong Axi valley on the northern margin of Yili block, West Tianshan Mountains, and its basic characteristics are described in this paper. The identification of brachiopods and corals reveals that the strata are of the Early Carboniferous Visean stage, and hence the strata that produced silicified wood should be the Lower Carboniferous Akeshake Formation. It is also proved that the ancient geographical position of the study area was not far from the old land. This new discovery is of great significance for re-understanding Early Carboniferous paleogeography and paleotectonic framework of Yili block.