一、朝鲜北半部下古生界概述朝鲜北半部的下古生界,过去长时间称为朝鲜界。后经过多年的工作,发现黄州地区的下古生界地层发育较好,化石亦较丰富,有其一定的代表性。在深入研究该区的基础上,将朝鲜界改称为黄州界。该界几乎全系浅海相沉积,且广泛分布于朝鲜北半部,剖面的下部常以碎屑岩为主,上部几乎全是碳酸盐岩,岩层的厚度一般为1200至1500m,最 First, the northern half of the North Paleozoic Overview North Korea’s northern Paleozoic, the past for a long time as the North Korean community. After many years of work, it was found that the Lower Paleozoic strata in Huangzhou area developed well and the fossils were also rich, with some representativeness. On the basis of an in-depth study of the area, the North Korean community will be renamed Huang State. The area is almost all facies of the shallow marine sedimentary, and widely distributed in the northern half of North Korea, often the lower part of the profile of clastic rocks, the upper part of almost all carbonate rocks, the thickness of the rock formation is generally 1200 to 1500m, the most