珠江口盆地东部东沙隆起中新世碳酸盐岩与生物礁地震响应特征及其识别
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摘要
利用地震数据,对珠江口盆地东部东沙隆起中新世发育的碳酸盐岩台地的顶面、底面、侧面以及内部地震响应特征进行了分析,总结了台地与生物礁的地震识别方法。对该区碳酸盐岩具有多期叠合的地震特征进行了分析,认为陆丰、惠州、流花3个地区的碳酸盐岩岩台地依次代表了早中新世早、中、晚3个主要碳酸盐岩发育期的特征。结合钻井资料,普查了碳酸盐岩及生物礁的分布范围,对东沙隆起的碳酸盐岩厚度进行了预测。
Seismic data were used to analyze the seismic response characteristics on the top,bottom,by the side and in the interval of carbonate platform of Dongsha massif on the Pearl Rive-month Basin,summarize the identification method of carbonate platform and reefs.After analyzing the seismic characteristics of several superimposed platforms,it was figured out that the platform of Lufeng-Huizhou-Liuhua Areas represented three main developing periods in early Miocene.On the basis of well data,the distribution range of carbonate platform on Dongsha rift and thickness of carbonate platform and reefs are predicted.
Seismic data were used to analyze the seismic response characteristics on the top,bottom,by the side and in the interval of carbonate platform of Dongsha massif on the Pearl Rive-month Basin,summarize the identification method of carbonate platform and reefs.After analyzing the seismic characteristics of several superimposed platforms,it was figured out that the platform of Lufeng-Huizhou-Liuhua Areas represented three main developing periods in early Miocene.On the basis of well data,the distribution range of carbonate platform on Dongsha rift and thickness of carbonate platform and reefs are predicted.
引文
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[2]郭伯举,谢衍兴,胡平忠,等.珠江口盆地生物礁的地震反射特征及其勘探效果[A].地球物理与中国建设——庆祝中国地球物理学会成立50周年文集[C].北京:中国地球物理学会,1997.
[3]胡平忠,王金中.珠江口盆地第三纪生物礁[A].胡平忠.中国生物礁与油气[C].北京:海洋出版社,1996.294～323.
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