本文孢粉样采集于山西宁武县轩岗矿区黄甲堡矿小立石沟。山西组沉积连续,旋迴清楚,化石孢粉相当丰富,是建立和划分孢粉组合带的理想地区,地层剖面简述如下: 上覆地层:下石盒子组(P_(1x))底部为灰白、浅灰色中粒长石石英砂岩,具明显的交错层 Sporoderm samples collected in this paper Xuanwu County, Shanxi Huanggang mine Huangjiabao small trenches. The sedimentary succession of Shanxi group is clear and the cycle is clear. The fossil sporopollen is quite rich. It is an ideal region to establish and divide the sporopollen belt. The stratigraphic profile is as follows: Overlying stratum: the bottom of the lower Shi box group (P_ (1x)) is gray , Light gray medium feldspar quartz sandstone, with obvious interlacing layer