桥镇组

时代属早奥陶世,分布于陕西镇巴、紫阳、岚皋、镇坪一带。下部为条带状板岩、钙质板岩,含炭粉砂质板岩及泥质灰岩,上部夹砂质大理岩;上部为粉砂质板岩、条带状板岩,夹凝灰质或炭质板岩。底部以泥质灰岩的出现与下伏上寒武统顶部角砾状灰岩区分,顶部以上覆权河口组底部厚层砂岩的出现为分界标志。上、下均呈整合接触。化石稀少,上部含笔石Tetragraptus quadribrachiatus,三叶虫Niobella sp.,腹足类Obolus sp.;高滩任河西岸本组下部含三叶虫Niobella sp.,Hysterolenus sp.等;岚皋花里溪大毛沟含笔石Dictyonema murragi,Clonograptus sp.,三叶虫Niobella ziyangensis,Geragnostus sp.及腕足类,海百合茎。厚1027m。厚500~1478米。

Concept & Semantic
  14

Alias

桥镇组

Contributor

contributed at 2011-10-11

Classification(s)

Earth System(in Chinese)Geostratigraphic stratigraphy

Detailed Description

English
Name Qiaozhen Fm
Chinese
Name 桥镇组
Description 时代属早奥陶世,分布于陕西镇巴、紫阳、岚皋、镇坪一带。下部为条带状板岩、钙质板岩,含炭粉砂质板岩及泥质灰岩,上部夹砂质大理岩;上部为粉砂质板岩、条带状板岩,夹凝灰质或炭质板岩。底部以泥质灰岩的出现与下伏上寒武统顶部角砾状灰岩区分,顶部以上覆权河口组底部厚层砂岩的出现为分界标志。上、下均呈整合接触。化石稀少,上部含笔石Tetragraptus quadribrachiatus,三叶虫Niobella sp.,腹足类Obolus sp.;高滩任河西岸本组下部含三叶虫Niobella sp.,Hysterolenus sp.等;岚皋花里溪大毛沟含笔石Dictyonema murragi,Clonograptus sp.,三叶虫Niobella ziyangensis,Geragnostus sp.及腕足类,海百合茎。厚1027m。厚500~1478米。

How to Cite

NNU_Group (2011). 桥镇组, Concept & Semantic, OpenGMS, https://geomodeling.njnu.edu.cn/repository/concept/6a523e04-0ebd-4744-9b0c-00d29657dd2a
Copy

QR Code

Contributor

contributed at 2011-10-11

QR Code


{{ item.label }} {{ item.value }}