| 滇西南孟连曼信地区早石炭世磷结核中的放射虫 |
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| 引用本文： | 张凡,冯庆来.滇西南孟连曼信地区早石炭世磷结核中的放射虫[J].微体古生物学报,2002,19(1):99-104. |
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| 作者姓名： | 张凡 冯庆来 |
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| 作者单位： | 中国地质大学地球科学学院,武汉,430074 |
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| 摘 要： | 滇西南昌宁－孟连构造带下石炭统平掌组火山岩之硅质岩夹层中，存在大量结核，X衍射分析证明，这些结核全部为磷结核。其中一块磷结核经分析，获得放射虫化石7属9种（其中包括一未定种）：Albaillella paradoxa Deflandre,Archocyrtium sp.,Robotium validum Cheng,Triaenosphaera sicarius Deflandre,Entactinia herculea Foreman,Entactinia parva Won,Astroentactinia multispinosa(Won),Entactinosphaera inusitata Foreman,Entactiosphaera palimbola Foreman，均属杜内期中期Albaillella paradoxa带。这些磷结核应该沉积在上升洋流形成的洋岛环境，而不是裂谷中。
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| 关 键 词： | 放射虫 早石炭世 磷结核 滇西南 孟连曼信地区 |
EARLY CARBONIFEROUS RADIOLARIANS IN PHOSPHORIC NODULE FROM MANXIN,MENGLIAN,SOUTH-WESTERN YUNNAN |
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| ZHANG Fan and FENG Qing-lai.EARLY CARBONIFEROUS RADIOLARIANS IN PHOSPHORIC NODULE FROM MANXIN,MENGLIAN,SOUTH-WESTERN YUNNAN[J].Acta Micropalaeontologica Sinica,2002,19(1):99-104. |
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| Authors: | ZHANG Fan and FENG Qing-lai |
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| Abstract: | There are many nodules in the silicalite interlayer in the volcanic rock of Pingzhang Formation in the Lower Carboniferous from the Changning-Menglian structure belt,South-West Yunnan.It's proved that they are all phosphoric nodules according to X-ray diffraction analysis.The fossil radiolarians in one of them consist 9 species (including 1 undefined species) belonging to 7 genera, Albaillella paradoxa Deflandre, Archocyrtium sp., Robotium validum Cheng, Triaenosphaera sicarius Deflandre,Entactinia herculea Foreman, Entactinia parva Won, Astroentactinia multispinosa (Won), Entactinosphaera inusitata Foreman, Entactosphaera palimbola Foreman, which belong to Albaillella paradoxa zone in the middle of Tournaisian age. These phosphoric nodule should be deposited in oceanic island formed by uplifted oceanic flow, not in rift valley. |
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| Keywords: | radiolaria taxonomy Early Carboniferous South-Western Yunnan |
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