龙门组
时代属中侏罗世。分布于北京西山地区。命名剖面位于北京西山门头沟龙门村北山坡。为灰黑、黑色粉砂岩、炭质粉砂岩与灰、绿灰色砂岩、含砾粗砂岩互层，夹灰色砾岩及煤线，底砾岩普遍发育(2～10米)，且较稳定，与下伏窑坡组和上覆九龙山组均呈假整合接触。厚160～395.5米。含植物化石Todites denticulata，T.williamsoni，Clathropteris pekingensis，Cladophlebis aff.scariosa，Pterophyllum sp.，Anomozamites sp.，Nilssoniopteris vittata，Elatocladus manchurica，Podozamites sp.等。
Classification(s)
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Geographic semantic resource library Earth System(in Chinese) Geostratigraphic stratigraphy
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| English |
|---|
| Name | Longmen Fm |
| Chinese |
|---|
| Name | 龙门组 |
| Description | 时代属中侏罗世。分布于北京西山地区。命名剖面位于北京西山门头沟龙门村北山坡。为灰黑、黑色粉砂岩、炭质粉砂岩与灰、绿灰色砂岩、含砾粗砂岩互层，夹灰色砾岩及煤线，底砾岩普遍发育(2～10米)，且较稳定，与下伏窑坡组和上覆九龙山组均呈假整合接触。厚160～395.5米。含植物化石Todites denticulata，T.williamsoni，Clathropteris pekingensis，Cladophlebis aff.scariosa，Pterophyllum sp.，Anomozamites sp.，Nilssoniopteris vittata，Elatocladus manchurica，Podozamites sp.等。 |
{{htmlJSON.HowtoCite}}
NNU_Group (2011). 龙门组, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/f93f6ee2-f55a-4ad6-a5fe-54b8bc8d05d5
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