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The Early-Middle Pleistocene Transition： characterization and proposed guide for the defining boundary 总被引：1，自引：0，他引：1
Martin J. Head Brad Pillans Sarah A. Farquhar 《《幕》》2008,31(2):255-259
The mid-Pleistocene transition （MPT, c. 1.2 to 0.5 Ma） records fundamental changes in Earth＇s climate state, where low-amplitude 41-kyr obliquity-dominated cycles gave way progressively to the high-amplitude, quasiperiodic （c. 100-kyr） fluctuations that characterize the later Pleistocene and Holocene. We use wavelet analysis on the LR04 δ^l8O benthic foraminiferal stack to confirm low-frequency power as early as 1.25-1.20 Ma, determine the persistence of obliquity-dominated cyclicity through and beyond the MPT, and reveal new levels of complexity in climate evolution. 相似文献
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Following the precedence already established during the INQUA Congress in 1932, the Middle/Upper （Late） Pleistocene boundary is defined at the base of the Last Interglacial, the Eemian Stage. It is proposed that a high-resolution core sequence from the Amsterdam Terminal （the Eemian Stage parastratotype） should constitute the Global Stratotype Section and Point （GSSP） for the base of the Upper （Late） Pleistocene Subseries （Quaternary System/Period）. 相似文献
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