| 白云岩—蒸发岩共生体系研究进展及展望 |
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| 引用本文： | 文华国,霍飞,郭佩,甯濛,梁金同,钟怡江,苏中堂,徐文礼,刘四兵,温龙彬,蒋华川.白云岩—蒸发岩共生体系研究进展及展望[J].沉积学报,2021,39(6):1321-1343. |
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| 作者姓名： | 文华国 霍飞 郭佩 甯濛 梁金同 钟怡江 苏中堂 徐文礼 刘四兵 温龙彬 蒋华川 |
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| 作者单位： | 1.成都理工大学沉积地质研究院，成都 610059 |
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| 基金项目： | 国家自然科学基金41972109, 42002116, 42102136 |
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| 摘 要： | 白云岩—蒸发岩共生体系在全球范围内分布广泛，在前寒武纪至第四纪地层中均有发现，然而该共生体系的发育机理及控制因素目前研究薄弱，亟待厘清。在调研国内外大量文献的基础上，结合研究团队对国内白云岩—蒸发岩共生体系的已有研究，系统总结了白云岩—蒸发岩共生体系发育特征及组合类型，并进一步探讨了其形成机制。在此基础上，明确了白云岩—蒸发岩共生体系的研究意义，并提出目前白云岩—蒸发岩共生体系研究存在的问题及下一步研究方向。首先，通过梳理全球范围内已报道的各地质历史时期白云岩—蒸发岩共生体系的特征，发现白云岩—蒸发岩共生体系广泛分布于全球51个地区，以北半球为主，且亚洲分布最多；其次为欧洲和北美洲，非洲分布相对较少；此外在南美洲及大洋洲也有零星分布；共生体系分布层位众多，从前寒武系到第四系均有分布，以二叠系居多。总结了蒸发岩与白云岩共生组合方式的5种类型:白云岩与蒸发岩互层、厚层白云岩上覆于厚层蒸发岩、厚层蒸发岩上覆于厚层白云岩、厚层白云岩夹薄层蒸发岩、厚层蒸发岩夹薄层白云岩，并探讨了共生差异的形成过程、分布规律、主要控制因素以及共生体系发育的特殊性和普遍性规律。其次，在全球共生体系矿物类型、特征精细表征基础之上，由宏观现象分析向微观机理解释转变，并划分出共生体系中6种蒸发岩和5种白云岩类型，初步分析了共生体系特征及成因。最后，总结了白云岩—蒸发岩共生体系中成岩流体的性质、特征、来源及流体演化路径。对白云岩—蒸发岩共生体系的研究不仅为解决“白云岩（白云石）问题”提供了新的思路，也将推动对白云岩—蒸发岩共生体系重要基础地质问题的认识，并为共生体系内油气资源勘探提供理论指导。
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| 关 键 词： | 白云岩 蒸发岩 共生关系 形成机制 主控因素 研究进展 展望 |
| 收稿时间： | 2021-10-18 |
Advances and Prospects of Dolostone-evaporite Paragenesis System |
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| WEN HuaGuo,HUO Fei,GUO Pei,NING Meng,LIANG JinTong,ZHONG YiJiang,SU ZhongTang,XU WenLi,LIU SiBing,WEN LongBin,JIANG HuaChuan.Advances and Prospects of Dolostone-evaporite Paragenesis System[J].Acta Sedimentologica Sinica,2021,39(6):1321-1343. |
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| Authors: | WEN HuaGuo HUO Fei GUO Pei NING Meng LIANG JinTong ZHONG YiJiang SU ZhongTang XU WenLi LIU SiBing WEN LongBin JIANG HuaChuan |
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| Institution: | 1.Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China3.Key Laboratory of Carbonate Reservoir, CNPC, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | Dolostone-evaporite paragenesis systems （DEPS） have been widely found in Precambrian to Quaternary strata worldwide. However， despite its wide spatio-temporal distribution， the formation mechanism and controlling factors of DEPS remain poorly studied. By reference to copious literature from China and elsewhere combined with previous knowledge of DEPS in China， this study comprehensively summarizes the development characteristics， combination patterns and formation mechanism of DEPS. Firstly， its spatio-temporal distribution is clarified based on published studies: laterally， DEPS is known to be widely distributed in 51 regions globally， mainly in the northern hemisphere （mostly in Asia， followed by Europe and North America）. Comparatively， it is found less often in Africa and is only scattered in South America and Oceania. Stratigraphically， although DEPS is found in many Precambrian to Quaternary strata， it appears mostly in the Permian. The combination patterns of evaporite and dolostone in DEPS include the interbedding of dolostone and evaporite， with thick dolostone overlying thick evaporite， thick evaporite overlying thick dolostone， thick dolostone mixed with thin evaporite， and thick evaporite mixed with thin dolostone. The formation process， distribution and main controlling factors of symbiotic differences as well as the particularity and universality of the paragenetic system development are discussed. Secondly， based on macro- to microscale characterization of mineral types in DEPS， six types of evaporites and five types of dolostones have been found and their genesis is discussed. Finally， the properties， characteristics， sources and evolution paths of diagenetic fluids in DEPS are summarized. DEPS studies provide new concepts for solving the “dolostone （or dolomite？）” question， and promote the understanding of the important basic geological problems associated with DEPS. Such studies also provide theoretical guidance for the exploration of oil and gas resources in the paragenetic system. |
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