徐州地区下寒武统馒头组沉积环境分析
首发时间:2015-01-27
摘要:以徐州大北望剖面为研究对象,对下寒武统馒头组进行了地层实测和室内薄片镜下分析。结合前人的研究,总结出下寒武统馒头组沉积组合序列和沉积环境演化。早寒武世缓慢海侵使海平面发生较频繁的显著波动, 形成了多个低级别的沉积旋回,提出主要包括了四种类型的沉积组合序列,沉积环境符合陆表海灰质障壁砂坝沉积模式,主要的沉积相包括了开阔台地相、滩相、近滩一侧潮下浅水相、潟湖相、潮坪相。
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An Analysis of Sedimentary Environment of Mantou Formation of Lower Cambrian in Xuzhou Region
Abstract:Take the Xuzhou Dabeiwang as research object,measured and indoor microscopic analysis the Mantou Formation section of Lower Cambrian。Combined with previous studies,reveal the sedimentary sequence and depositional environment evolution of Mantou Formation of Lower Cambrian。The Early Cambrian,a slow transgression brought the sea fluctuations frequently,Formed several small level of sedimentary cycles。There are mainly four sedimentary sequence combinations,depositional environment meet the Lime Sand Barriers of Epicontinental sedimentary model,the main sedimentary facies include open platform,beach facies,near beach side of the shallow subtidal phase,lagoons phase,tidal flat..
Keywords: Sedimentary environment;Sedimentary combinations;Mantou Formation;Xuzhou region
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No.4630002103284714****
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