Rock rafts could be ‘cradle of life’

Floating rafts of volcanic pumice could have played a significant role in the origins of life on Earth, scientists from Oxford University and the University of Western Australia have suggested. The researchers, writing in the journal Astrobiology, argue that pumice has a unique set of properties which would have made it an ideal habitat for the earliest organisms that emerged on Earth over 3.5 billion years ago.

“Not only does pumice float as rafts but it has the highest surface-area-to-volume ratio of any type of rock, is exposed to a variety of conditions, and has the remarkable ability to adsorb metals, organics and phosphates as well as hosting organic catalysts, such as zeolites,’ said Professor Martin Brasier of Oxford University’s Department of Earth Sciences who led the work with David Wacey of the University of Western Australia. ‘Taken together these properties suggest that it could have made an ideal ‘floating laboratory’ for the development of the earliest micro-organisms.”

via Rock rafts could be ‘cradle of life’.

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2 Responses to Rock rafts could be ‘cradle of life’

  1. alfy says:

    What an excellent idea. Like all the best ideas it makes sense as soon as you hear it. Earlier ideas (Oparin et al) thought of the metal silicates in the clay of mudbanks, but pumice was not only common but had all these adsorptive and surface area properties. Still, if you believe that life arrived from outer space on comets, the poor delusional Profs from Oxford and Australia are wasting their time.

  2. Anonymous says:

    No Noah’s arc did not exist… but a rockraft did!
    Come on people God created the world and He created each and everyone of us.

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