【作者】 聂逢君； 李思田； 解习农；

【Author】 Nie Fengjun Li Sitian(Otina University of Geosciences, Beijing)Xie Xinong(China University of Geosciences, Wuhan)

【机构】 中国地质大学；

【摘要】 珠江口盆地晚渐新世至早中新世所形成的珠江组和珠海组是盆地内烃类的重要储集层,在珠三坳陷中珠江组砂岩比珠海组的更为重要.珠江口盆地珠三坳陷的珠江组、珠海组砂岩的岩石类型有长石石英砂岩、岩屑石英砂岩、岩屑长石砂岩、长石岩屑砂岩,种类虽然较多,但是样品之间的各个碎屑颗粒的含量差别并不是太大,均集中在类型的分界限附近.将碎屑颗粒的成分分别在QFL和QmFLt两个三角图上投影表明,绝大多数点都落在再旋回造山蚀源区内,揭示了整个华南地区新生代受板快挤压的影响,个别点落在克拉通内蚀源区和混合区内,反映了蚀源区性质的复杂性.更多还原

【Abstract】 The sandstones of Zhujiang and Zhuhai formations, which were formed during the Late Oligocene and Early Pliocene, are major reservoir for hydrocarbon in Pearl River Mouth Basin. Zhujiang is more important than Zhuhai in Zhu III depression. According to the samples plotted in the ternary diagram of sandstone classification, the sandstones from Zhujiang and Zhuhai are feldspathic quartz sandstone, lithic quartz sandstone, lithofeldspathic sandstone and feldspathic lithic sandstone. Through triangular diagram analysis, the provenance for sandstone of Zhujiang and Zhuhai formations are mainly recycled orogenic. This is presumably because the evolution of Pearl River Mouth Basin was influenced by the collision between Indian and Eurasian plates and the subduction of western Pacific ocean plate.更多还原