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华北板块晚古生代海侵事件古地理研究
  • 期刊名称:湖南科技大学学报(自然科学版),2009.9,24(3):16-22
  • 时间:0
  • 分类:P539.2[天文地球—古生物学与地层学;天文地球—地质学]
  • 作者机构:[1]山东科技大学地质学院,山东青岛266510, [2]山东省重点实验室"沉积成矿作用与沉积矿产实验室",山东青岛266510
  • 相关基金:国家自然科学基金资助项目(40872100);山东省高校沉积成矿作用与沉积矿产重点实验室(山东科技大学)开放基金资助项目(DMSM200801):
  • 相关项目:海域区古近纪典型盆地煤聚积模式及转换机制研究
中文摘要:

为了研究华北地区晚古生代海侵事件沉积古地理分布,采用层序地层学、沉积学、煤地质学等多学科综合方法,将研究区地层划分6个层序,进行了陆表海层序的海侵事件古地理分析,研究结果表明:层序1突发型海侵沉积期海水由东北向西南侵入,以台地相和潮坪相沉积为主,事件沉积组合主要集中在华北中北部地区.层序2海侵事件沉积明显,海侵体系域主要是由庙沟-毛儿沟沉积期沉积而成,为最大的海侵事件,全盆地主要为台地相,聚煤中心南移至华北中部的山西地区.层序3海侵体系域古地理的海侵范围局限于华北中南部和南部地区,海侵事件发生于南华北地区,聚煤中心南移周4,参9.

英文摘要:

In order to study distribution of the transgresive event paleogeography about the Late Paleozoic of North China, sequence stratigraphy, sedimentology, coal geology and their integrative methods were applied to analyzed to the sequence strata and transgressive event paleogeography. The result shows that:in the time of sequence 1th, the event transgression happened from NE to SW. There are mainly platform facies and tidal facies. And the combination of event distributed the North Centre of North China. Transgressive event deposits are very obvious in the sequence 2th, when TST is the depositional stage of the Miaogou-maoergou, which are the largest transgressive event. Platform facies are the main facies of the basin. The centre of coal accumulation lies in Shanxi Prinvince, where are the middle areas of the North China. The scope of transgressive event of sequence 3th was limited to the south and middle south of North China. So the transgressive event firstly happened in the south of North China and the centre of coal accumulation moved towards south. 4figs., 9refs.

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