(Table 1) Mass-accumulation rates for the non-authigenic, inorganic, crystalline, eolian component of sediments recovered at DSDP Hole 62-463@en

Elevated regions in the central parts of ocean basins are excellent for study of accumulation of eolian material. The mass-accumulation rates of this sediment component appear to reflect changes in the influx of volcanic materials through the Early Cretaceous to Recent history of Deep Sea Drilling Project Site 463, on the Mid-Pacific Mountains. Four distinct episodes of eolian accumulation occurred during the Cretaceous: two periods of moderate accumulation, averaging about 0.2 to 0.3 g/cm**2/10**3 yr, 67 to 70.5 m.y. ago and 91 to 108 m.y. ago; a period of low accumulation, approximately 0.03 g/cm**2/10**3 yr, 70.5 to 90 m.y. ago; and a period of high accumulation, about 0.9 g/cm**2/10**3 yr, 109 to 117 m.y. ago (bottom of the hole). Much of the Cenozoic section is missing from Site 463. Upper Miocene to Recent sediments record an upward increase in accumulation rates, from less than 0.01 to about 0.044 g/cm**2/10**3 yr. The late Pliocene-Pleistocene peak may reflect the change to glacial-wind regimes, as well as an increase in volcanic source materials.海盆中央隆起区是研究风成物质堆积特征的绝佳研究载体。该沉积物组分的质量堆积速率，似乎能够反映中太平洋海山（Mid-Pacific Mountains）上的深海钻探计划（Deep Sea Drilling Project）463站位从早白垩世至今的火山物质输入量变化。白垩纪期间共存在4个特征明确的风成堆积阶段：两个中等堆积期，堆积速率平均约为0.2~0.3 g/cm²·10³a，对应时代分别为67~70.5百万年前与91~108百万年前；一个低堆积期，速率约0.03 g/cm²·10³a，对应70.5~90百万年前；以及一个高堆积期，速率约0.9 g/cm²·10³a，对应109~117百万年前（钻孔底部）。463站位缺失了大部分新生代地层。上新统顶部至现代的沉积物记录了堆积速率的持续上升，从不足0.01 g/cm²·10³a增至约0.044 g/cm²·10³a。上新世晚期-更新世的堆积速率峰值，可能反映了冰川型风场的转变，同时也与火山物质源区的供给增加有关。