| 李向东,魏泽昳,杨敏.内波、内潮汐沉积及其沉积矿产意义研究综述[J].地质找矿论丛,2024,39(3):386-393 |
| 内波、内潮汐沉积及其沉积矿产意义研究综述 |
| A review of internal-wave and internal-tide deposits and the significance for sedimentary mineral resources |
| 投稿时间：2024-01-24 |
| DOI：10.6053/j.issn.1001-1412.2024.03.011 |
| 中文关键词: 内波、内潮汐沉积 沉积流体 沉积型磷矿 页岩气 |
| 英文关键词:internal-wave and internal-tide deposits sedimentary fluid flow sedimentary phosphor ore shale gas |
| 基金项目:国家自然科学基金面上项目"阿拉善地块东南缘与鄂尔多斯盆地西缘中、上奥陶统浊流演化及其与内波相互作用研究"(编号:41272119)和中国地质科学院地质研究所基本科研项目"宁夏香山群复杂水动力条件下浊流沉积特征研究"(编号:J1110)共同资助。 |
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| 中文摘要: |
| 深水环境中内波、内潮汐沉积研究至今已有30多年的研究历史,且在地层记录中发现了较多的研究实例,较系统地总结了该类型沉积的鉴别标志,为其在沉积矿产方面的应用奠定了基础。笔者在已有的内波、内潮汐沉积研究成果的基础上,从沉积流体演化的角度对已总结的沉积鉴别标志进行了梳理,对特征性的沉积构造和垂向序列的应用范围进行了限定,强调特征性鉴别标志与内波、内潮汐沉积一般特征的结合使用。依据内波、内潮汐在沉积过程中的作用,将内波、内潮汐在海底的作用区域划分为改造海底已有沉积物的改造作用带、与深水其它流体发生交互作用的交互作用带和静水效应带,分别探讨了三个作用带与常规油气和页岩气勘探的关系。同时认为:①内波、内潮汐作用在沉积型磷矿成因中可能成为联系"上升洋流"学说和"生物成磷"学说之间的纽带,并有可能形成再沉积型磷矿;②目前已发现的地层记录中的内波、内潮汐沉积基本上发育在改造作用带内;③内波、内潮汐不直接作用于海底的交互作用带和静水效应带的研究非常薄弱,可能成为今后急需加强的研究方向,其重点在于探讨和总结内波、内潮汐沉积的微观和地球化学鉴别标志。 |
| 英文摘要: |
| The research of internal-wave and internal-tide deposits in deep-water environments have been studied for more than 30 years. Many cases of study on internal-wave and internal-tide deposits recorded in strata has been carried out, identification marks of the deposits summarized systematically laying a sound foundation for the application to sedimentary mineral resources. Based on the research results available at present the authors streamline the summarized identification marks according to evolution of the internal-wave and internal-tide sedimentary fluid flow and define the scope of the characteristic sedimentary structure and vertical succession, emphasize the combination of characteristic and general identification marks. The submarine internal wave and internal tide action is divided into reworked action zone, the previous submarine sediments (reworked), interaction zone (the internal wave and internal tide flow interacts with other sub-marine flow) and still water zone. Relation of the three zones to conventional oil and gas and shale gas is discussed and considered that the internal wave and internal tide action would become a genetic link between the rising ocean flow theory and that of biogenetic theory of phosphor ore, the internal wave and internal tide deposits recorded in strata are generally developed in the reworked zone, study on that the internal wave and internal tide are not directly acted on the interaction zone and still water zone is very weak and should be urgently strengthened in future and focus should be on the microscopic and geochemical identification marks. |
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