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重新研究了珠江口盆地LF13-2-1井3020～3272.5m井段的孢粉地层学.根据重新鉴定的孢粉资料,3140～3230m井段孢粉组合称栎粉-五边粉组合,可与珠三坳陷WC19-1-3井文昌组—神狐组及北部湾盆地WS1-3-1井流沙港组二段的孢粉组合对比,时代为中始新世.该井段以下12m厚的安山质凝灰岩、砂泥岩的孢粉组合称栎粉-桤木粉-紫箕孢组合.在南海北部陆架,这一孢粉组合可与WS1-3-1井流沙港组三段孢粉组合对比,时代为早始新世.建议将合该孢粉组合的这一岩组命名为“陆丰组”.
The spore-pollen stratigraphy of well 3020-3272.5m in LF13-2-1 well of Pearl River Mouth Basin was re-studied.According to the re-identified sporopollen data, Compared with the sporopollen assemblages of the second member of the Wenchang Formation-Shenhu Formation and the WS1-3-1 well of the Beibuwan Basin in the Zhu San Depression, the age was middle-Eocene. The thick andesitic tuff and sandstone-mudstone assemblages of pollen assemblages are called the combination of Quercus mongolicus and Porphyra sp. In the northern shelf of the South China Sea, this sporopollen assemblage can be associated with the third-stage spores of the Liushagang Formation in WS1-3-1 Comparison of powder composition, the era of the Eocene. Proposed combination of the palynological rock group named “Lufeng group.”