(Table T2) Major and trace element analysis of ODP Site 200-1224 basalts@en

During Ocean Drilling Program Leg 200, ~45 Ma igneous basement, was cored in the northeastern Pacific at Site 1224. The basement surface was inferred to be 28 meters below seafloor (mbsf). Basement lithology down to 170 mbsf is divided into three major units: Unit 1 = massive flow, Unit 2 = pillow breccia, and Unit 3 = intermixed pillows and thin flows. […]

在大洋钻探计划（Ocean Drilling Program, ODP）第200航次期间，科研人员于东北太平洋1224站位钻取了约45百万年的火成岩基底（igneous basement）。该基底顶面被推断位于海底以下28米（meters below seafloor，简称mbsf）。对170 mbsf以浅的基底岩性可划分为三个主要单元：单元1为块状熔岩流，单元2为枕状角砾岩，单元3为混杂枕状熔岩与薄层熔岩流。[…]