The documentation of biosignatures in Precambrian rocks is an important requirement in the search for evidence of life on other ancient planetary surfaces. Three major kinds of biosignatures are crucially important: primary microbial sedimentary textures, diagenetic organomineral assemblages, and stable isotope compositions. This study presents new petrographic, mineralogical, and organic geochemical analyses of biosignatures in dolomitic stromatolites from the Pethei Group (N.W.T., Canada) and the Kasegalik Formation of the Belcher Group (Nunavut, Canada). Both are approximately contemporary late Paleoproterozoic stromatolite-bearing dolomitic units deposited after the Great Oxidation Event. Micro-Raman and optical microscopy are used to i...
The Mars Science Laboratory (MSL) has an instrument package capable of making measurements of past a...
This report provides a rationale for the advances in instrumentation and understanding needed to ass...
If life ever existed, or still exists, on Mars, its record is likely to be found in minerals formed ...
The earliest signatures of life preserved in Earth’s rock record are found within fossilized organos...
The recognition of past habitable environments on Mars has increased the urgency to understand biosi...
Extensive stromatolitic carbonate platforms developed during and after the Palaeoproterozoic Great O...
In this work, we address the difficulty of reliably identifying traces of life on Mars. Several inde...
Paleoarchean stromatolites are among the oldest compelling evidence for life. We present advanced tw...
In this work, we address the difficulty of reliably identifying traces of life on Mars. Several inde...
Fossilized microorganisms (microfossils) preserved within Precambrian sedimentary rocks represent a ...
Fossilized microorganisms (microfossils) preserved within Precambrian sedimentary rocks represent a ...
This PhD study focused on organic, inorganic and isotopic geochemical studies of modern stromatolite...
Recent reviews on the oldest traces of life on Earth discuss the biotic and abiotic arguments propos...
This report provides a rationale for the advances in instrumentation and understanding needed to ass...
****Please view the README4.txt file for more detailed documentation of data.**** Contact informatio...
The Mars Science Laboratory (MSL) has an instrument package capable of making measurements of past a...
This report provides a rationale for the advances in instrumentation and understanding needed to ass...
If life ever existed, or still exists, on Mars, its record is likely to be found in minerals formed ...
The earliest signatures of life preserved in Earth’s rock record are found within fossilized organos...
The recognition of past habitable environments on Mars has increased the urgency to understand biosi...
Extensive stromatolitic carbonate platforms developed during and after the Palaeoproterozoic Great O...
In this work, we address the difficulty of reliably identifying traces of life on Mars. Several inde...
Paleoarchean stromatolites are among the oldest compelling evidence for life. We present advanced tw...
In this work, we address the difficulty of reliably identifying traces of life on Mars. Several inde...
Fossilized microorganisms (microfossils) preserved within Precambrian sedimentary rocks represent a ...
Fossilized microorganisms (microfossils) preserved within Precambrian sedimentary rocks represent a ...
This PhD study focused on organic, inorganic and isotopic geochemical studies of modern stromatolite...
Recent reviews on the oldest traces of life on Earth discuss the biotic and abiotic arguments propos...
This report provides a rationale for the advances in instrumentation and understanding needed to ass...
****Please view the README4.txt file for more detailed documentation of data.**** Contact informatio...
The Mars Science Laboratory (MSL) has an instrument package capable of making measurements of past a...
This report provides a rationale for the advances in instrumentation and understanding needed to ass...
If life ever existed, or still exists, on Mars, its record is likely to be found in minerals formed ...