Abstract: Abstract We studied seven stratigraphic sections in Rembang Zone, North East Java Basin, Central Java based on quantitative analyses of benthic faunas and planktonic foraminiferas. The parts consist of upper-part of Ledok Formation, calcareous shales/marls of Mundu Formation, glouconitic Globigerinid sands of Selorejo Formation, and blue-green shales of Tambakromo Member of Lidah Formation. We identified an N21 sequence in the Late Pliocene, with a sequence boundary (SB-21) which superimposed with irregular contact between marl of Mundu Formati...
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