论文部分内容阅读
本文系统地描述了该区实测的两条泥盆系剖面,并首次报导了六层含菊石的层位。根据所产的菊石讨论了保山地区泥盆系的划分,新建了中泥盆统的松林沟组,并将该区的泥盆系与国内外进行了对比。由于该区可能缺失了晚泥盆世法门阶和早石炭世杜内阶下部地层,表明该区晚泥盆世晚期和早石炭世初期经历了一段不太长的上升剥蚀阶段。本文最后还描述了滇西保山地区泥盆纪的菊石化石,计八个属六个种,其中Koenenites属系国内初次报导,三个为新种。
This paper systematically describes the two Devonian sections measured in this area and reports the first six layers of ammonites. Based on the produced amethyst, the division of Devonian in Baoshan area was discussed, and the Songlingou Formation in the Middle Devonian was newly established, and the Devonian in this area was compared with that in the world. Since the Upper Devonian Famen and Lower Carboniferous Lower Dunes strata may be missing in this area, it indicates that the Late Devonian and Early Carboniferous experienced a not too long period of uplifting and denudation. At the end of this article, we also describe Devonian ammonite fossils in Baoshan area, western Yunnan, accounting for eight species of six genera, of which Koenenites belong to the first report in China and three are new species.