搜索结果: 1-3 共查到“国际动态 地球科学总论 oxygen”相关记录3条 . 查询时间(0.015 秒)
![](http://www.firstlight.cn/upload/imgfile/20206/19/202061911303340.jpg)
Volcanic activity and changes in Earth's mantle were key to rise of atmospheric oxygen(图)
Volcanic activity changes Earth mantle were key rise atmospheric oxygen
font style='font-size:12px;'>
2020/6/19
Oxygen first accumulated in the Earth's atmosphere about 2.4 billion years ago, during the Great Oxidation Event. A long-standing puzzle has been that geologic clues suggest early bacteria were photos...
![](http://www.firstlight.cn/upload/imgfile/201412/3/201412317546163.jpg)
Lack of oxygen delayed the rise of animals on Earth(图)
oxygen Earth animals
font style='font-size:12px;'>
2014/12/3
Geologists are letting the air out of a nagging mystery about the development of animal life on Earth.
Scientists have long speculated as to why animal species didn’t flourish sooner, once sufficient...
![](http://www.firstlight.cn/upload/imgfile/200912/21/2009122113511.jpg)
Deep sea rocks point to early oxygen on earth(图)
Deep sea rocks early oxygen earth
font style='font-size:12px;'>
2009/12/21
Red jasper cored from layers 3.46 billion years old suggests that not only did the oceans contain abundant oxygen then, but that the atmosphere was as oxygen rich as it is today, according to geologis...