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河南鲁山地区寒武系第三统馒头组三段上部碳酸盐岩中发育了大量微生物岩,包括3种类型核形石和2种类型凝块石,其内发现了大量钙化的蓝细菌化石Girvanella(葛万菌)和Epiphyton(附枝菌)。根据凝块石-核形石—鲕粒的演化关系,可识别出5个微生物岩旋回。凝块石总是位于微生物岩旋回的底部,形成于潮下低能环境中;核形石位于旋回的中部,形成于潮下低-高能周期性变化的环境中;鲕粒灰岩出现在旋回的顶部,发育于持续搅动的潮下高能环境中。水动力条件的逐渐增强是微生物岩类型及其旋回演化的主控因素。
A large number of microbial rocks are developed in the upper part of the third member of the Third Member of the Third Member of the Cambrian in the Lushan Mountain, Henan Province. There are three types of kerogen and two types of agglomerates. A large number of calcified cyanobacteria Girvanella and Epiphyton. Based on the evolution of the clinker-stone-oolite, five microbial rocks can be identified. The clinker stone is always located at the bottom of the microbial rock gyration and formed in the subducted low-energy environment. The pyroxene stone is located in the central part of the cycle and forms in the environment with low and high-tectonic period. The oolitic limestone appears at the top of the cycle , Developed in the continued stirring under the tidal high-energy environment. The gradual enhancement of hydrodynamic conditions is the main controlling factor of microbial rock types and their evolution.