吴峰;郭来源;张道军;解习农;尤丽;杜学斌;何云龙;商志垒;许马光;

• 1:中国地质大学构造与油气资源教育部重点实验室
• 2:中海石油(中国)有限公司湛江分公司研究院
• 3:中国地质大学丝绸之路地质资源国际研究中心
• 4:中海油研究总院

摘要(Abstract)：

生物礁生长对水体环境参数要求苛刻,因而生物礁体系垂向演化藴藏了丰富的古海平面、古环境变化信息。基于海平面变化的层序格架内,生物礁体中元素地球化学指标呈现出较好的规律性分布。利用Panalytical衍射仪和Itrax岩心扫描仪分别对西科1井第四系生物礁滩体进行了矿物组分和元素地球化学分析,其中矿物组分结果显示不稳定的文石、高镁方解石主要分布在第四系浅层,而深层以低镁方解石为主。根据矿物组分,将第四系划分为2段:富文石段和富方解石段,分别选用不同元素指标采用频谱分析和小波变换,有效地进行了五级层序、六级层序划分,其中富文石段可进一步划分出6个五级层序和24个六级层序,富方解石段划分出21个五级层序和74个六级层序,划分结果显示,高频单元内元素指标亦呈现出规律性变化,反映了周期性的环境变化。

关键词(KeyWords)： 生物礁;元素;矿物组分;层序地层;米氏旋回

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(91028009;41372112);国家自然科学基金青年科学基金项目(41202086);; 国家重大油气专项(2011ZX05025-002-02)

作者(Author): 吴峰;郭来源;张道军;解习农;尤丽;杜学斌;何云龙;商志垒;许马光;

Email:

DOI:

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