燕山地区下寒武统昌平组豹斑状灰岩的古环境意义
张俊明 ,周仰康 ,丘金玉
摘要(Abstract)：
<正> 燕山地区的昌平组以豹斑状灰岩为主的碳酸盐岩地层,假整合覆于震旦系青白口统景儿峪组之上,与上覆地层馒头组呈整合接触。昌平组在北京昌平县龙山一带发育最好。项礼文等(1964)在该地昌平组灰岩中发现Palaeolenus fengyangensis Chu和Redlichia sp.
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作者(Author): 张俊明 ,周仰康 ,丘金玉
DOI: 10.19839/j.cnki.dcxzz.1981.01.008
参考文献(References)：
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