ODP2 0 9航次将沿 14°～ 16°N大西洋中脊 (MAR)钻取上地幔的岩心。该区域是 1996年大洋岩石圈科学钻探计划进入 2 1世纪后 ,在低速扩张脊非补偿岩浆部分钻取一系列浅钻获取上地幔岩心的理想地区。在本区 ,火成岩地壳部分缺失 ,地幔的结构和成分可以通过沿走向超过 10 0km的那 The ODP2 0 9 voyage drills the core of the upper mantle along the MAR 14 ° ~16 ° N mid-oceanic ridge (MAR). This area was the ideal area for drilling a series of shallow drilling for upper mantle core in the part of unconsolidated magma at low speed expanding ridge after the 1996 marine lithospheric scientific drilling program entered the 21st century. In this area, part of the igneous crust is absent, and the structure and composition of the mantle can pass through that along the strike of more than 100 km