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为研究山西吕梁山地区寒武纪地层的地层学与沉积学问题,根据山西文水苍尔会剖面寒武系地层叠置关系,将该剖面寒武系地层划分为8个三级层序。基于沉积相的变化规律和地层叠置关系的旋回性研究结果,苍尔会剖面存在两个特殊的地层学与沉积学现象:下部为霍山组砂岩直接覆盖在太古宙变质岩系上,其较为良好的出露与明显的地层接触关系,为探讨山西中部霍山组砂岩的地层归属问题提供依据;在该剖面崮山组、长山组、凤山组中分别发育不同的均一石生物丘,代表华北地台寒武纪晚期—奥陶纪中期“随着后生动物辐射,微生物碳酸盐也在增加”微生物碳酸盐复苏期的基本沉积样式。在新的寒武纪年代地层框架下,对山西文水苍尔会剖面进行层序地层划分,不但为研究华北寒武系生物丘沉积组构多样性提供参考实例,同时也为探讨山西中部地区前寒武—寒武巨大的古地理变迁提供实例。
In order to study the stratigraphy and sedimentology of the Cambrian strata in the Luliangshan area, Shanxi Province, the Cambrian stratigraphy is divided into 8 third-order sequences according to the superposition of the Cambrian strata in the Wenloukanghui Section in Shanxi Province. Based on the cyclostationary research results of sedimentary facies and stratigraphic superimposition relationship, there are two special stratigraphic and sedimentological phenomena in the Paleo profile: the lower part is the Huoshan Formation sandstone that directly covers the Archean metamorphic rocks, Good outcrops and obvious contact with the strata, providing evidence for the stratigraphic attribution of the Huoshan Formation sandstone in the central part of Shanxi Province. Different homogeneous stone bio-mounds were developed in the Danshan, Changshan and Fengshan formations, respectively, representing In the late Cambrian-Late Ordovician period of North China, the basic deposition pattern of microbial carbonate during the recovery period of microbial carbonate increased with the irradiation of metazoa. Under the framework of the new Cambrian chronostratigraphy, the sequence stratigraphic division of the Wenshui’er’erhui profile in Shanxi not only provides a reference example for studying the sedimentary fabric diversity of the Cambrian bio-mounds in North China, but also provides a reference for exploring the central part of Shanxi Former Cambrian - Cambrian huge paleogeographic changes provide examples.