理学
;
;The paper has summarized systematically evolutionary law in time and space on petrofacies and paleogeography of Late Paleozoic era in Northern China and distributive law of depositional systems.
根
晚古生代沉积岩系
环境标
,识别出29个相,归并为冲积扇、河流、三角洲、潮汐砂滩、碳酸盐台
等6个沉积体系。
