靖远组

时代属早石炭世大塘期晚期至德坞期。分布于甘肃靖远、武威一带。命名地点在甘肃靖远磁窑附近。为浅海及滨海相含煤沉积。下段为灰白至灰黑色砂质页岩,下部夹薄层灰岩和薄层石膏,厚30~70米,含菊石Eumorphoceras bisulcatum aff.varicatum及植物化石Cardiopteridium cf. spetsbergense,Eleutherophyllum mirabile等;中段为灰黑至黑色砂质页岩,顶部夹煤线,厚30米,含植物化石Lepidodendron aolungbulukense,Bothrodendron cf.circular,Neuroptreis cf.gigantea,Sphenopteris? sp.等;上段为灰黑至黑色砂质页岩夹薄层灰岩和钙质页岩,含可采煤层,厚70米,含腕足类Choristites yanghukouensis,Martinia remota,Linoproductus sinensis及菊石类Gastrioceras cf.listeri。在靖远东北不远的宁夏同心一带已发现菊石Homoceras。与下伏臭牛沟组可能呈假整合接触。

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Contributor(s)

Initial contribute: 2011-10-11

Classification(s)

Geographic semantic resource libraryEarth System(in Chinese)Geostratigraphic stratigraphy

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English
Name Jingyuan Fm
Chinese
Name 靖远组
Description 时代属早石炭世大塘期晚期至德坞期。分布于甘肃靖远、武威一带。命名地点在甘肃靖远磁窑附近。为浅海及滨海相含煤沉积。下段为灰白至灰黑色砂质页岩,下部夹薄层灰岩和薄层石膏,厚30~70米,含菊石Eumorphoceras bisulcatum aff.varicatum及植物化石Cardiopteridium cf. spetsbergense,Eleutherophyllum mirabile等;中段为灰黑至黑色砂质页岩,顶部夹煤线,厚30米,含植物化石Lepidodendron aolungbulukense,Bothrodendron cf.circular,Neuroptreis cf.gigantea,Sphenopteris? sp.等;上段为灰黑至黑色砂质页岩夹薄层灰岩和钙质页岩,含可采煤层,厚70米,含腕足类Choristites yanghukouensis,Martinia remota,Linoproductus sinensis及菊石类Gastrioceras cf.listeri。在靖远东北不远的宁夏同心一带已发现菊石Homoceras。与下伏臭牛沟组可能呈假整合接触。

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NNU_Group (2011). 靖远组, Concept & Semantic, OpenGMS, https://geomodeling.njnu.edu.cn/repository/concept/aca9f1bb-67c5-4e3c-ba60-e902be1dad75
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Contributor(s)

Initial contribute : 2011-10-11

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