贵州几个区域地质问题的研究现状及存在问题

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本文简要的介绍了8个有关贵州区域地质问题的研究现状及存在问题:①贵州大地构造可分为扬子陆块、江南加里东造山带、右江印支一燕山造山带三个单元;②贵州有老于梵净山群、四堡群的陆壳;③江南加里东造山带的构造样式在贵州表现为平卧褶皱及逆冲叠瓦扇构造。由大面积前寒武系出露而构成的雪峰隆起在中三叠世以前并不存在,它是印支-燕山期由南东向北西逆冲-推覆的结果;④右江地区是印支-燕山期的造山带,地壳结构可与Catter建立的大陆地壳结构模式相比拟,其区别在于右江地区具有更明显的分层、分块的不均一性;⑤野外追索及所含化石群的研究表明:领组下部的时代应属早三叠世晚期。领组与下伏地层之间系区域性的超覆不整合面,在局部地区其下有玄武岩。这一事实表明:东吴运动似乎发生在早二叠世晚期.而不是发生在早晚二叠世之间;⑥瓮安晚震旦世早期磷块岩中,早已发现世界上最早的生命性分化的痕迹。最近又发现可疑动物胚胎化石和完整的海绵个体及海绵骨针。海绵化石及海绵骨针能得到证实和公认,这将是目前已知的世界上出现最早的动物化石,也将对寒武纪生物大爆炸理论给予巨大的冲击。风冈硐卡拉早志留世晚期维管植物是目前国内已知的层位最低的维管植物群;⑦暴露环境下碳酸盐沉积──钙结? This paper briefly introduces the research status quo and existing problems of eight regional geological problems in Guizhou: (1) The geotectonic structure of Guizhou Province can be divided into three types: the Yangtze block, the Jiangdong Caledonian orogenic belt, the Yanshan-Yayanshan orogen; There are old continental crusts in Fanjingshan Group and Sibao Group; (3) The tectonic style of the Gali East orogenic belt in the southern part of the Yangtze River is characterized by horizontal folds and laminated thrust fan in Guizhou Province. The Xuefeng uplift formed by the exposition of a large area of ​​the Precambrian did not exist before the Middle Triassic. It was the result of the thrusting of the Indosinian-Yanshanian period from south to east to the northwest; ④ The Youjiang area was Indosinian-Yanshanian orogenic belt, the crustal structure can be compared with the Catter established continental crustal structural model, the difference lies in the Youjiang region has more obvious stratification, block heterogeneity; ⑤ field recourse and contained The study of fossil assemblages shows that the epoch of the lower member of the epicenter should belong to the late Early Triassic. There is a regional overlying unconformity between the formation and the underlying strata, with basalts underneath. This fact shows that the Soochow movement seems to have occurred in the late Early Permian. Rather than occur in the early and late Permian; ⑥ Weng’an early Sinn Possifluid, has long been found in the world’s earliest traces of life differentiation. Recently found suspicious animal embryonic fossils and a complete sponge and sponge spicules. Sponge fossils and sponge spicules can be confirmed and recognized, which will be the earliest known animal fossils in the world and will also exert a tremendous impact on the theory of the Big Bang of the Cambrian. The windward hole Calan early Late Permian vascular plant is currently the lowest known vascular plant flora; ⑦ exposure to carbonate deposition under the environment -
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