Upper Cretaceous calcareous nannofossils from Broken Ridge and Ninetyeast Ridge
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Drilling at Broken Ridge and Ninetyeast Ridge during Ocean Drilling Program Leg 121 yielded thick sections of Upper Cretaceous nannofossil-bearing sediments including calcareous...
大洋钻探计划（Ocean Drilling Program）第121航次在破碎海岭（Broken Ridge）与九十度东海岭（Ninetyeast Ridge）开展钻探作业，获取了晚白垩世含超微化石的厚层沉积序列，其中包含钙质……
