中上扬子地区二叠纪缺氧环境*
罗进雄, 何幼斌

Anoxic environments of the Permian of Middle and Upper Yangtze Area
Luo Jinxiong, He Youbin
中上扬子地区中二叠统茅口阶Ⅰ类缺氧沉积分布