早更新世末中更新世早期的环境事件与灾变

综术了发生在早更新世末到中更新世早期：即大致从１．１￣０．７ＭａＢＰ的各种环境事件，包括气候异常变化、构造活化、侵蚀沉积事件、天文事件、生物迁徙以及古地磙的异常等，其中气候异常和构造活化是基本的环境事件，对其它事件有控制作用。根据气候异常和构造活化的特征，可以认为：从１．１ＭａＢＰ和０．７ＭａＢＰ是一个连续的环境异常过程，这一时期各类环境事件集中发生，环境事件或为灾变的原因，或为灾变的结果，处自然

Environmental events and catastrophes from the end of early pleistocene to the early stage of middle pleistocene

In this paper, the author descfibes several kinds of environmental events (includingabnormal changes of climate, tectonic activation, erosion and deposition events, astronomicalevents, migrations of creature and some other events such as the reversal of paleo -magneticpo1ar) from the end of Early Pleistocene to the early stage of Middle Pleistocene, approximately1.1- 0.7MaB.P.. Abnormal changes of climate and tectonic activation are the essential forsome other environmental events, such as erosion, deposition events and migrations ofcreature, and contro1 these events. There are two clusters of impact events which are supposedto happen at about 1.1 Ma B.P. and 0.7Ma B.P. respectively and the paleo - magnetic polarreverse three times duril1g the time of 1.1 ~0.7 Ma B.P.. Based on the characteristics of abnor-mal changes of climate and tectonic activation, the author combines these events together andregards the whole period from 1.1 to 0.7 Ma B.P. as a continuous procession full of abnor-lnal environmental events. Some environmental events are the causes of catastrophes, and someare the results. There are close relationships between environmental events and naturalcatastrophes.