华北山西阶与有关含(竹蜓)地层之对比

    CORRELATION OF THE SHANXI STAGE IN NORTH CHINA AND RELATED FUSULINID-BEARING STRATA IN CERTAIN AREAS

    • 摘要: 山西阶是笔者建立的华北地层区晚古生代的地方性(区域性)阶之一,兹选太原西山山西组(岩石地层单位)层型剖面为山西阶之层型,并选晋东南晋城—陵川地区自黄水沟砂岩(与太原西山北岔沟砂岩层位相当)之底至佳样砂岩(与太原西山骆驼脖子砂岩层位相当)之底的一段地层为山西阶的次层型。在山西东南部,山西

       

      Abstract: The correlation of the Shanxi Stage in North China and its related fusu- linid-bearing strata in certain areas is shown in a table. The correlation indicates that the Shanxian Stage (Zhang Zhicun, 1985) in North China as well as the uppermost part of the Taiyuanian Stage is roughly equivalent to the lower part of the Darvasites ordinatus zone from the Swine Limestone Formation in Chuanshan of Jiangsu, to the Robustoschwagerina schellwieni zone from the Baomoshan Formation in Pu’an of Guizhou, to the Staffella zone from the Maping Formation in Yishan of Guangxi, to the Nagatoella lower subzone from the Schwagerina cushmani zone of the generalized Chihsia Formation in southeastern Hunan and to the Sakmarian Stage, characterized by the Robustoschwagerina-Paraschwagerina zone, in southwestern Darwas of Central Asia. It is not correct to correlate the Shanxi Stage in Shanxi with the generalized Chihsia Stage as a whole corresponding to the Sakmarian, Artinskian, Chihsian and Kubergandian Stages in Central Asia (Leven, Scherbovich, 1978) and South China.

       

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