松辽盆地营城组火山岩相发育特征——以吉林省九台地区野外露头为例
Volcanic facies development characteristics of Yingcheng Formation in Songliao Basin:A case study of field outcrops in Jiutai area of Jilin Province
沈艳杰 1李钧如 1张立亚 2周洋 3程日辉1
作者信息
- 1. 吉林大学地球科学学院,吉林长春 130061
- 2. 中国石化东北油气分公司,吉林长春 130062
- 3. 沈阳市皇姑区创新发展研究中心,辽宁沈阳 110031
- 折叠
摘要
为了解松辽盆地营城组火山岩类型、火山岩相类型及成因模式的复杂性、相关性之间的关系,明确其对于油气勘探的意义,利用野外露头、钻井资料、岩石薄片等多种地质资料,识别火山岩类型,划分火山岩相,分析了火山岩相成因特征.结果表明:①营城组发育4大类火山岩类型,即熔岩、火山碎屑熔岩、火山碎屑岩及碎屑沉积岩;②营城组野外露头划分了 5种岩相类型,即火山口—火山通道型、火山口—破火山口型,近火山口—火山斜坡型、火山斜坡型和火山穹窿型;③建立了2类火山岩相成因模式,火山口堆积成因模式和火山斜坡成因模式.
Abstract
To explore the intricate relationship between volcanic rock types,volcanic facies,and genetic models within the Yingcheng Formation of the Songliao Basin,and to understand their implications for oil and gas exploration,a comprehensive analysis was conducted using a wide array of geological data.This included field outcrops,drilling data,and rock slices,allowing for the identification of volcanic rock types,classification of volcanic facies,and analysis of the genesis characteristics of these facies.It is concluded that:①Four types of volcanic rocks are developed in Yingcheng Formation,which are lava,pyroclastic lava,pyroclastic rock,and clastic sedimentary rock;②The outcrops of Yingcheng Formation are divided into five lithofacies types,which are crater facies-volcano channel type,crater-post volcanic type,near crater-volcano slope type,volcanic slope type and volcanic dome type;③ Two genetic modes of volcanic facies,crater accumulation genetic mode and volcanic slope genetic mode,are established.
关键词
松辽盆地/九台地区/营城组/火山岩/火山岩相/成因模式Key words
Songliao Basin/Jiutai area/Yingcheng Formation/volcanic rock/volcanic facies/genetic mode引用本文复制引用
出版年
2024
NETL
NSTL
万方数据