红土洼组

时代属晚石炭世早期。分布于北祁连山东段,即甘肃永昌以东及宁夏中宁、中卫等地。由一套杂色页岩夹灰岩组成,下部以黑、灰黑色页岩、钙质页岩为主,夹薄层灰岩及煤线;上部为浅灰色、土黄色粉砂质页岩,夹黑色泥质灰岩及页岩。底部含牙形石Declinognathodus noduliferous带,中、上部含菊石Bilinguites superbilingue,B.metabilinguis,Cancelloceras asianum等,在相当Goniatites的R2—G1带,内含牙形石Idiognathodus sinuatus,I.corrugatus及I.sulcatus。与下伏靖远组和上覆羊虎沟组均呈整合接触,厚75米。宁夏中卫称靖远组上段(相当于红土洼组),包含2个菊石带Reticuloceras带和Gastrioceras带和孢子Reticulatisporites reticulatusDensosporites triangularis带。

Concept & Semantic
  7

Contributor

contributed at 2011-10-11

Classification(s)

Earth System(in Chinese)Geostratigraphic stratigraphy

Detailed Description

EN_US
Name Hongtuwa Fm
ZH_CN
Name 红土洼组
Description 时代属晚石炭世早期。分布于北祁连山东段,即甘肃永昌以东及宁夏中宁、中卫等地。由一套杂色页岩夹灰岩组成,下部以黑、灰黑色页岩、钙质页岩为主,夹薄层灰岩及煤线;上部为浅灰色、土黄色粉砂质页岩,夹黑色泥质灰岩及页岩。底部含牙形石Declinognathodus noduliferous带,中、上部含菊石Bilinguites superbilingue,B.metabilinguis,Cancelloceras asianum等,在相当Goniatites的R2—G1带,内含牙形石Idiognathodus sinuatus,I.corrugatus及I.sulcatus。与下伏靖远组和上覆羊虎沟组均呈整合接触,厚75米。宁夏中卫称靖远组上段(相当于红土洼组),包含2个菊石带Reticuloceras带和Gastrioceras带和孢子Reticulatisporites reticulatusDensosporites triangularis带。

How to cite

NNU_Group (2020). 红土洼组, Concept & Semantic, OpenGMS, https://geomodeling.njnu.edu.cn/repository/concept/44f5e35c-68ce-40cd-a918-3ef94f3452c8
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contributed at 2011-10-11

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