| 山东莱芜九龙山寒武纪张夏组核形石灰岩分类及沉积环境探讨 |
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| 引用本文： | 迟乃杰,韩作振,单伟,孙雨沁,熊玉新,刘传娥.山东莱芜九龙山寒武纪张夏组核形石灰岩分类及沉积环境探讨[J].山东国土资源,2020,36(2):41-49. |
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| 作者姓名： | 迟乃杰 韩作振 单伟 孙雨沁 熊玉新 刘传娥 |
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| 作者单位： | 山东省地质科学研究院,自然资源部金矿成矿过程与资源利用重点实验室,山东省金属矿产成矿地质过程与资源利用重点实验室,山东济南 250013;山东科技大学地球科学与工程学院,山东青岛 266590;山东科技大学地球科学与工程学院,山东青岛 266590;山东省地质科学研究院,自然资源部金矿成矿过程与资源利用重点实验室,山东省金属矿产成矿地质过程与资源利用重点实验室,山东济南 250013;山东省地矿工程勘察院,山东济南 250014 |
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| 基金项目： | 山东省重点研发计划(2017CXGC1601);国家自然科学基金项目(41772076);山东省自然科学基金项目(ZR2019PD019);省部级重点实验室开放课题(kfkt201810);国家重点研发计划(2016YFC0600606)。 |
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| 摘 要： | 核形石灰岩作为微生物岩的一种重要类型,长期受到地质学家的广泛关注;近年来,随着研究的不断深入,有关核形石灰岩分类、沉积环境等的探讨再次成为沉积学研究的热点。通过野外观察描述与室内镜下分析相结合,对山东莱芜九龙山寒武纪张夏组产出的核形石灰岩进行系统研究。根据核形石灰岩的宏观特征、共生组分及其含量等特征,将该地区产出的含核形石的灰岩分为:生屑质核形石灰岩、含生屑核形石灰岩、含核形石生屑灰岩与含核形石鲕粒灰岩4类,同时对4种含核形石灰岩的沉积环境进行系统分析,主要为潮下低能带与潮下高能带,并简要分析了该地区核形石灰岩的形成过程。
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| 关 键 词： | 寒武系 核形石灰岩 沉积环境 九龙山 山东莱芜 |
Study on Classification and Depositional Environment of Nuclear Limestones in Cambrian Zhangxia Formation in Jiulongshan of Laiwu City in Shandong Province |
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| CHI Naijie,HAN Zuozhen,SHAN Wei,SUN Yuqin,XIONG Yuxin and LIU Chuane.Study on Classification and Depositional Environment of Nuclear Limestones in Cambrian Zhangxia Formation in Jiulongshan of Laiwu City in Shandong Province[J].Land and Resources in SHANDONG Province,2020,36(2):41-49. |
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| Authors: | CHI Naijie HAN Zuozhen SHAN Wei SUN Yuqin XIONG Yuxin and LIU Chuane |
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| Institution: | (Shandong Institute of Geological Sciences,Shandong Key Laboratory fo Geological Processes and Resource Utilization in Metallic Minerals,Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated to the Ministry of Land and Resourcse,Shandong Ji'nan 250013,China;Earth Science and Engineering College of Shandong Universtiry of Science and Technology,Shandong Qingdao 266590,China;Shandong Geo-engineering Exploration Institute,Shandong Ji'nan 250014,China) |
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| Abstract: | Nuclear limestone is an important type of microbial carbonates, which receive a broad attention of geologists. Recently, classification and depositional environments study of nuclear limestone has become one of popular subject in carbonate sedimentology. Based on detailed field observation and microscopic analysis, nuclear limestone in Cambrian Zhangxia formation in Jiulongshan section in Shandong province has been studied systematically in this paper. According to macroscopic characteristics, paragenetic component and contents, nuclear limestones in this area can be classified into four types, they are bioclastic oncolite, oncolite with bioclasts, bioclastic limestone with oncoids and oolitic limestone with oncoids. The depositional environments of the four types of Nuclear limestones have been analyzed comprehensively. They are generally deposited in subtidal zones with either low-energy or high-energy zones. The formation environment of core limestone in this area has been analyzed as well. |
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| Keywords: | Nuclear limestone Cambrian depositional environment Jiulongshan Zhangxia formation |
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