Of Martian atmospheres, oceans, and fossils

Details Of Martian atmospheres, oceans, and fossils Of Martian atmospheres, oceans, and fossils

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...87..228h&link_type=abstract

Icarus (ISSN 0019-1035), vol. 87, Sept. 1990, p. 228-235.

Biology

7

Atmospheric Moisture, Extraterrestrial Life, Fossils, Mars Atmosphere, Mars Environment, Oceans, Bacteria, Exobiology, Mars Craters, Planetary Composition, Planetary Evolution, Prokaryotes

Scientific paper

A scenario is presently developed in which a substantial resemblance between Martian conditions up to 1.5 Gyr ago and those of the ancient earth led to the development of rudimentary life in Mars, in stages and on timescales that may be broadly comparable to terrestrial ones. The warm Martian oceans would give rise to both aerobic and anaerobic photosynthesizing prokaryotes, as well as such structures as stromatolites, which could in due course have transformed the Martian atmosphere as profoundly as those on earth. It is anticipated that the fossil remains of these rudimentary organisms can be found along the fringes of the ancient Martian oceans, which currently take the form of northern lowland plains.

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