Late Paleozoic macrofloral assemblages from Weibei Coalfield, with reference to vegetational change through the Late Paleozoic Ice-age in the North China Block
Late Paleozoic macrofloral assemblages from Weibei Coalfield, with reference to vegetational change through the Late Paleozoic Ice-age in the North China Block
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DOI：
10.1016/j.coal.2009.10.007
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发表时间：
2010-08
影响因子：
5.6
通讯作者：
Jun Wang
中科院分区：
文献类型：
--
作者：
Jun Wang
根据华北陆块典型含煤盆地渭北煤田7个剖面的研究，重新划分了晚古生代本溪组、太原组、下石盒子组和上石盒子组的植物宏体化石组合序列。这些带是：Paripteris spp.-Linopteris spp.-Conchophyllum richthofenii组合（本溪组），Neuropterispseudovata-Lepidodendronposthumii组合（太原组和山西组），山西组上部和石河子组下部的翅蕨-三角翅翅蕨-怀氏华夏蕨组合，大果刺蕨Gigantonoclea lagrelii-Fascipteris hallei-Lobatannularia heianensis组合作为这种生物地层重新分析的结果，已经清楚地表明，生物地层边界并不像人们所认为的那样与岩石地层边界完全相关。华北陆块陆相沉积的生物地层与IUGS全球年代地层进行了对比。更精确的年代地层的限制，作为这项研究的结果，使人们有可能更精确地将植被演替的同时上蜡和晚古生代冰盖的减弱。
Based on investigations of seven stratigraphic sections in the Weibei Coalfield, a typical coal basin in the North China Block, the succession of Late Paleozoic plant macrofossil assemblages from the Benxi (or Penchi in old spelling), Taiyuan, Shanxi, Lower Shihhotse and Upper Shihhotse Formations were redefined. These zones are the: Paripteris spp.–Linopteris spp.–Conchophyllum richthofenii Assemblage (Benxi Fm.), Neuropteris pseudovata–Lepidodendron posthumii Assemblage (Taiyuan and lower Shanxi Fms.), Emplectopteridium alatum–Emplectopteris triangularis–Cathaysiopteris whitei Assemblage (upper Shanxi and Lower Shihhotse Fms.), Gigantonoclea lagrelii–Fascipteris hallei–Lobatannularia heianensis Assemblage (Upper Shihhotse Fm.). As a result of this biostratigraphic reanalysis, it has become clear that biostratigraphic boundaries do not exactly correlate to lithostratigraphic boundaries as has been thought. The biostratigraphy of the terrestrial deposits in the North China Block were correlated to the IUGS Global Chronostratigraphy. The more precise chronostratigraphic constraints that were obtained as a result of this study make it possible to more precisely correlate the vegetational successions to the concurrent waxing and waning of the Late Paleozoic ice sheets.