Science. 1992 Oct 9;258(5080):255-60. doi: 10.1126/science.258.5080.255.
Oxygen-18 (delta(18)O) variations in a 36-centimeter-long core (DH-11) of vein calcite from Devils Hole, Nevada, yield an uninterrupted 500,000-year paleotemperature record that closely mimics all major features in the Vostok (Antarctica) paleotemperature and marine delta(18)O ice-volume records. The chronology for this continental record is based on 21 replicated mass-spectrometric uranium-series dates. Between the middle and latest Pleistocene, the duration of the last four glacial cycles recorded in the calcite increased from 80,000 to 130,000 years; this variation suggests that major climate changes were aperiodic. The timing of specific climatic events indicates that orbitally controlled variations in solar insolation were not a major factor in triggering deglaciations. Interglacial climates lasted about 20,000 years. Collectively, these observations are inconsistent with the Milankovitch hypothesis for the origin of the Pleistocene glacial cycles but they are consistent with the thesis that these cycles originated from internal nonlinear feedbacks within the atmosphere-ice sheet-ocean system.
来自内华达州魔鬼洞的 36 厘米长静脉方解石芯（DH-11）中的氧-18（δ18O）变化提供了一个不间断的 50 万年古温度记录，该记录与沃斯托克（南极洲）古温度和海洋 δ18O 冰量记录中的所有主要特征非常吻合。这个大陆记录的年代学基于 21 个重复的质谱铀系列测年。在中更新世和末次冰期之间，方解石记录的最后四个冰川旋回的持续时间从 8 万年增加到 13 万年；这种变化表明主要的气候变化是无规律的。特定气候事件的时间表明，太阳辐射的轨道控制变化并不是引发冰川消退的主要因素。间冰期气候持续了大约 2 万年。总的来说，这些观察结果与米兰科维奇假说（Milankovitch hypothesis）不一致，该假说认为更新世冰川旋回的起源是太阳辐射的轨道变化，但它们与这些旋回起源于大气-冰盖-海洋系统内部非线性反馈的论点一致。
