scholarly journals Hydrocarbon biomarkers preserved in carbonate veins of potentially Paleoproterozoic age, and implications for the early biosphere

Geobiology ◽  
2018 ◽  
Vol 16 (6) ◽  
pp. 577-596 ◽  
Author(s):  
Carl A. Peters ◽  
Simon C. George
Keyword(s):  
Hydrocarbon Biomarkers ◽  
Early Biosphere

The Origin of Life and the Early Biosphere

Microfossils ◽  
2013 ◽  
pp. 37-47
Author(s):  
Howard A. Armstrong ◽  
Martin D. Brasier
Keyword(s):  
Origin Of Life ◽  
The Origin Of Life ◽  
Early Biosphere

Genesis of Oils in Eastern Kamchatka: Evidence from Hydrocarbon Biomarkers

2018 ◽  
Vol 56 (7) ◽  
pp. 735-742
Author(s):  
I. V. Konopleva ◽  
L. N. Vlasova ◽  
T. N. Nemchenko
Keyword(s):  
Eastern Kamchatka ◽  
Hydrocarbon Biomarkers

The case for life on Mars

2008 ◽  
Vol 7 (2) ◽  
pp. 117-141 ◽  
Author(s):  
Dirk Schulze-Makuch ◽  
Alberto G. Fairén ◽  
Alfonso F. Davila
Keyword(s):  
Great Success ◽  
Detection Experiment ◽  
Microbial Life ◽  
Life On Mars ◽  
Extremophilic Microorganisms ◽  
Chain Of Evidence ◽  
Life Detection ◽  
Water On Mars ◽  
Cumulative Evidence ◽  
Early Biosphere

AbstractThere have been several attempts to answer the question of whether there is, or has ever been, life on Mars. The boldest attempt was the only ever life detection experiment conducted on another planet: the Viking mission. The mission was a great success, but it failed to provide a clear answer to the question of life on Mars. More than 30 years after the Viking mission our understanding of the history and evolution of Mars has increased vastly to reveal a wetter Martian past and the occurrence of diverse environments that could have supported microbial life similar to that on Earth for extended periods of time. The discovery of Terran extremophilic microorganisms, adapted to environments previously though to be prohibitive for life, has greatly expanded the limits of habitability in our Solar System, and has opened new avenues for the search of life on Mars. Remnants of a possible early biosphere may be found in the Martian meteorite ALH84001. This claim is based on a collection of facts and observations consistent with biogenic origins, but individual links in the collective chain of evidence remain controversial. Recent evidence for contemporary liquid water on Mars and the detection of methane in the Martian atmosphere further enhance the case for life on Mars. We argue that, given the cumulative evidence provided, life has and is likely to exist on Mars, and we have already found evidence of it. However, to obtain a compelling certainty a new mission is needed, one which is devoted to the detection of life on Mars.

Stable isotope (S, C) chemostratigraphy and hydrocarbon biomarkers in the Ediacaran upper section of Sierras Bayas Group, Argentina

2013 ◽  
Vol 231 ◽  
pp. 388-400 ◽  
Author(s):  
M. Bagnoud-Velásquez ◽  
J.E. Spangenberg ◽  
D.G. Poiré ◽  
L.E. Gómez Peral
Keyword(s):  
Stable Isotope ◽  
Hydrocarbon Biomarkers
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