krumov

Hi there all, I'm a student in Molecular Biology with an interest in Biochemistry and this is what I'm going to specialize in the future.I am currently doing a coursework (a review article) in one of my favourite research fields in science - the origin of life and the evolution of metabolism so you are probably already guessing why I am writing in the Earth Science section.I am slightly lost among all those papers regarding the early conditions of our planet and It's hard for me to form an opinion.And this is very important since I have to be able to discuss the process of abiogenesis with respect to these conditions.So I need some help from a person with a good background in Geology and Earth science. I see that the earliest views regarding the early Earth are that the atmosphere was considered reductive in character (which will support the famous Urey-Miller experiment) - mainly composed of chemicals like methane, amonnia and hydrogen.However, It seems that the views have changed and in the last decade there is also an opinion that It has actually been neutral to slightly reductive - richer in compounds like carbon dioxide.Despite that in some recent papers I read that the concept of a reductive atmosphere is not dead (which with respect to the origin of life will make the Urey-Miller experiment still relevant).Can someone help me to get an orientation about the current model regarding the primitive conditions of Earth? (I saw the homework section but I decided to create a topic here since I think this is not a question with a precise and simple answer and maybe requires to be discussed.Besides, I think that early Earth was a pretty interesting place ) Thank You