长阳组

时代属早石炭世早期。分布于鄂西江陵以西和湘西北地区,为滨海海湾相沉积。主要为灰黑色页片状泥岩、粉砂岩和灰白、灰褐色石英砂岩,时夹煤线和灰岩小透镜体,含黄铁矿、菱铁矿结核,厚度为7~12米。与上覆资丘组和下伏写经寺组均呈整合接触。上部泥岩、粉砂岩中富含腕足类、介形虫和孢子化石,分别为Schuchertella gelaohoensisLeptagonia analoga组合,Bairdia castaB.Profusa组合和Spelaetriletes pertiosusCingulizonates capistratus带;下部泥岩粉砂岩中含孢子化石Vallattisporites verrucosusRetusotriletes incohatus带,所夹灰岩透镜体中有牙形石Siphonodella levisPolygnathus inrnatus带及珊瑚Syringopora ramulosa;腕足类Chonetes cf.ornatus,Plicattifera sp.等。

Concept & Semantic
  34

Alias

长阳组

Contributor

contributed at 2011-10-11

Classification(s)

Earth System(in Chinese)Geostratigraphic stratigraphy

Detailed Description

English
Name Changyang Fm
Chinese
Name 长阳组
Description 时代属早石炭世早期。分布于鄂西江陵以西和湘西北地区,为滨海海湾相沉积。主要为灰黑色页片状泥岩、粉砂岩和灰白、灰褐色石英砂岩,时夹煤线和灰岩小透镜体,含黄铁矿、菱铁矿结核,厚度为7~12米。与上覆资丘组和下伏写经寺组均呈整合接触。上部泥岩、粉砂岩中富含腕足类、介形虫和孢子化石,分别为Schuchertella gelaohoensisLeptagonia analoga组合,Bairdia castaB.Profusa组合和Spelaetriletes pertiosusCingulizonates capistratus带;下部泥岩粉砂岩中含孢子化石Vallattisporites verrucosusRetusotriletes incohatus带,所夹灰岩透镜体中有牙形石Siphonodella levisPolygnathus inrnatus带及珊瑚Syringopora ramulosa;腕足类Chonetes cf.ornatus,Plicattifera sp.等。

How to Cite

NNU_Group (2011). 长阳组, Concept & Semantic, OpenGMS, https://geomodeling.njnu.edu.cn/repository/concept/11f7772a-9f84-41fc-bbc1-7d5b0096e832
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contributed at 2011-10-11

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