The emergence of life from iron monosulphide bubbles at a submarine hydrothermal redox and pH front [0.03%]
铁硫化物气泡在海底热液还原和pH梯度上产生生命的假说
M J Russell,A J Hall
M J Russell
Here we argue that life emerged on Earth from a redox and pH front at c. 4.2 Ga. This front occurred where hot (c. 150 degrees C), extremely reduced, alkaline, bisulphide-bearing, submarine seepage waters interfaced with the acid, warm (c. ...
Periodicity in extinction and the problem of catastrophism in the history of life [0.03%]
灭绝的周期性与生命史上灾变作用的问题
J J Sepkoski Jr
J J Sepkoski Jr
The hypothesis that extinction events have recurred periodically over the last quarter billion years is greatly strengthened by new data on the stratigraphic ranges of marine animal genera. In the interval from the Permian to Recent, these ...
F Kenig,J M Hayes,B N Popp et al.
F Kenig et al.
A total of 165 samples was obtained from the Oxford Clay Formation at seven different sites. Nearly all were from the Peterborough Member (Lower Oxford Clay), but seven were from the Stewartby and Weymouth Members (Middle and Upper Oxford C...