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以5cm为间隔取得东太平洋5794岩心早中新世超微化石软泥须（2406～22．06Ma）的55个样品，用同位素质谱仪、耦合等离子光谱仪和化学溶解法分别对欧泥中可溶碳酸盐组分的87Sr／86Sr、全岩的Al2O3和CaCO3含量进行了测定。结果显示，87Sr／86Sr和CaCO3呈反向发育了2个完整旋目和1个半旋回。87Sr／86Sr和CaCO3短期旋回具有重要的古海洋学意义：（1）87Sr/86Sr的正负旋回分别反映了陆壳风化强度和海底火山作用加强的趋势，CaCO3正负旋回分别反映了温度降低和升高的趋势，而火山活动强烈时期与温度下降时期对应。（2）相对早中新世和晚中新世，南极底层流在早中新世对东太平洋的影响较旨，但是也形成两个CaCO3溶解带和底栖有孔虫高含量带。
Fifty-five samples of the Early Miocene Microfossil Sludge (2406 ~ 22.06 Ma) in the core 5794 of the East Pacific Ocean were collected at intervals of 5 cm. The isolates were soluble in European mud by isotope mass spectrometry, coupled plasma spectrometry and chemical dissolution The contents of 87Sr / 86Sr, Al2O3 and CaCO3 in carbonate rock were measured. The results show that 87Sr / 86Sr and CaCO3 reversely developed two complete gyros and one half cycle. Short-term cycles of 87Sr / 86Sr and CaCO3 have important paleoclimatological meanings: (1) The positive-negative cycles of 87Sr / 86Sr reflect the intensification of crustal weathering intensity and submarine volcanoes, respectively. The positive and negative cycles of CaCO3 reflect the decrease of temperature and Rising trend, while the period of intense volcanic activity corresponds to the decline of temperature. (2) Compared with the Early Miocene and Late Miocene, the Antarctic bottom-flow influence the East Pacific over the Early Miocene, but also formed two CaCO3 dissolution zones and high benthic foraminiferal zone.