浅水砂质辫状河结构单元的新认识
|
摘要
由于辫状河沉积粒度变化大且对沉积环境的解释因人而异,尚未总结出一个普遍认可的辫状河结构模式。从现代沉积入手,选择湖北罗田县胜利河砂质辫状河段,采用Google Earth卫星照片分析、野外实地测量等方法,对辫状砂坝典型结构单元进行研究,并对砂坝沉积特征与形成过程进行研究,建立浅水砂质辫状河储层结构模式。取得如下认识:1)浅水砂质辫状河储层结构单元主要包括辫状砂坝、坝槽、沟道和洼坑;2)水流在坝面上具有分散流动的特征,流速具有分带性;3)辫状砂坝的形成与横向环流并无关系。
Due to the large changes in grain size of sediments of braided river, we have known various interpretations of the sedimentary environment. Till now,a well-approved structure model of braided river has not been summarized. The paper made a research on the typical structural unit types, as well as sedimentary characteristics. We obtain the formation process of braided sand bars in the sandy braided river section of Shengli River in Luotian County of Hubei province. Through an analysis of Google Earth satellite,we know that the field measurement and the structure model of shallow water sandy braided river was established. Structure units of shallow water sandy braided river will consist of braided sand bars,including chutes,channels and abandoned pools. Water flow on the surface is dispersive and the flow rate is various in different zones on the surface. The formation of braided sand bars and two-way circulation are not related.
Due to the large changes in grain size of sediments of braided river, we have known various interpretations of the sedimentary environment. Till now,a well-approved structure model of braided river has not been summarized. The paper made a research on the typical structural unit types, as well as sedimentary characteristics. We obtain the formation process of braided sand bars in the sandy braided river section of Shengli River in Luotian County of Hubei province. Through an analysis of Google Earth satellite,we know that the field measurement and the structure model of shallow water sandy braided river was established. Structure units of shallow water sandy braided river will consist of braided sand bars,including chutes,channels and abandoned pools. Water flow on the surface is dispersive and the flow rate is various in different zones on the surface. The formation of braided sand bars and two-way circulation are not related.
引文
[1]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2002.
[2]裘怿楠.碎屑岩储层沉积基础[M].北京:石油工业出版社,1987.
[3]Simth D G,Putnam P E.Anastomosed river deposits,modern and ancient examples,Alerta,Canada[J].Earth Science,1980.
[4]王建国,王德发.山前辫状河储层地质模型建立初探——以阜新盆地海洲露头砂体研究为例[J].沉积学报,1995,13(1):41-47.
[5]廖保方,薛培华.辫状河现代沉积研究与相模式:中国永定河剖析[J].沉积学报,1998,16(1):34-50.
[6]陈彬滔,于兴河,王天奇,等.砂质辫状河岩相与构型特征——以山西大同盆地中侏罗统云岗组露头为例[J].石油与天然气地质,2015,36(1):111-117.
[7]杨丽莎,陈彬滔,李顺利,等.基于成因类型的砂质辫状河泥岩分布模式——以山西大同侏罗系砂质辫状河露头为例[J].天然气地球科学,2013,24(1):93-98.
[8]冯增昭.沉积岩石学[M].北京:石油工业出版社,1993.
[9]奉伟,胡光明,喻小涛.辫状河侧积体的特征及形成机理[J].中国锰业,2017,35(2):1-3.
[10]Miall A D.Architecture-element analysis:a new method of facies analysis applied to fluvial deposits[J].Earth Science Reviews,1985(22):261-308.
[11]Miall A D.Architecture element and bounding surfaces in fluvial deposits:Anatomy of the Kayenta formation(lower Jurassic),southwest Colorado[J].Sedimentary Geology,1988(55):233-262.
[12]Galloway W E,Hobday D K.陆源碎屑沉积体系在石油、煤和铀勘探中的应用[M].北京:石油工业出版社,1989.
[13]曹耀华,张春生,刘忠保,等.长江枝江段凤凰滩现代沉积特征[J].江汉石油学院学报,1994,16(4):8-14.
[14]张昌民,尹太举,赵磊,等.辫状河储层内部建筑结构分析[J].地质科技情报,2013,32(4):7-13.
[15]王冬冬,宋亚开,郭宇鹏.基于Google Earth软件对曲流河点坝的研究[J].中国锰业,2017,35(2):141-143.
[16]田豹.重矿物物源分析研究进展[J].中国锰业,2017,35(1):107-109.
[2]裘怿楠.碎屑岩储层沉积基础[M].北京:石油工业出版社,1987.
[3]Simth D G,Putnam P E.Anastomosed river deposits,modern and ancient examples,Alerta,Canada[J].Earth Science,1980.
[4]王建国,王德发.山前辫状河储层地质模型建立初探——以阜新盆地海洲露头砂体研究为例[J].沉积学报,1995,13(1):41-47.
[5]廖保方,薛培华.辫状河现代沉积研究与相模式:中国永定河剖析[J].沉积学报,1998,16(1):34-50.
[6]陈彬滔,于兴河,王天奇,等.砂质辫状河岩相与构型特征——以山西大同盆地中侏罗统云岗组露头为例[J].石油与天然气地质,2015,36(1):111-117.
[7]杨丽莎,陈彬滔,李顺利,等.基于成因类型的砂质辫状河泥岩分布模式——以山西大同侏罗系砂质辫状河露头为例[J].天然气地球科学,2013,24(1):93-98.
[8]冯增昭.沉积岩石学[M].北京:石油工业出版社,1993.
[9]奉伟,胡光明,喻小涛.辫状河侧积体的特征及形成机理[J].中国锰业,2017,35(2):1-3.
[10]Miall A D.Architecture-element analysis:a new method of facies analysis applied to fluvial deposits[J].Earth Science Reviews,1985(22):261-308.
[11]Miall A D.Architecture element and bounding surfaces in fluvial deposits:Anatomy of the Kayenta formation(lower Jurassic),southwest Colorado[J].Sedimentary Geology,1988(55):233-262.
[12]Galloway W E,Hobday D K.陆源碎屑沉积体系在石油、煤和铀勘探中的应用[M].北京:石油工业出版社,1989.
[13]曹耀华,张春生,刘忠保,等.长江枝江段凤凰滩现代沉积特征[J].江汉石油学院学报,1994,16(4):8-14.
[14]张昌民,尹太举,赵磊,等.辫状河储层内部建筑结构分析[J].地质科技情报,2013,32(4):7-13.
[15]王冬冬,宋亚开,郭宇鹏.基于Google Earth软件对曲流河点坝的研究[J].中国锰业,2017,35(2):141-143.
[16]田豹.重矿物物源分析研究进展[J].中国锰业,2017,35(1):107-109.