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Depleted carbon isotope compositions observed at Gale crater, Mars

Carbon isotopic analysis is among the most pervasive geochemical approaches because the fractionation of carbon isotopes produces a natural tracer of biological and chemical processes. Rover-based carbon isotopic analyses of sedimentary rocks on Mars have the potential to reveal modes of Martian carbon cycling. We report carbon isotopic values of the methane released during pyrolysis of samples obtained at Gale crater. The values show remarkable variation indicating different origins for the carbon evolved from different samples. Samples from multiple locations within Gale crater evolved methane with highly fractionated carbon isotopes. We suggest three routes by which highly fractionated carbon could be deposited on Mars, with each suggesting that Martian carbon cycling is quite distinct from that of the present Earth.

All MSL SAM data are available at the Geosciences Node of NASA’s Planetary Data System (<https://pds-geosciences.wustl.edu/missions/msl/sam.htm>). All st ....

Aeolis Palus , Glen Torridon , John Klein , Yellowknife Bay , Carolyn Shoemaker , Mount Sharp , Siccar Point , Ogunquit Beach , Bagnold Dune ,

Mars Panorama - Curiosity rover: Martian solar day 2469 360 Panorama

Mars Panorama - Curiosity rover: Martian solar day 2469 360 Panorama
360cities.net - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from 360cities.net Daily Mail and Mail on Sunday newspapers.

Catherine Oconnell Cooper , Glen Torridon , Nasa Mars Exploration Program Image , Environmental Theme Group , Exploration Program , Harlaw Rise , Southern Outcrop , Rover Environmental Monitoring System , Dynamic Albedo ,

Mars Panorama - Curiosity rover: Martian solar day 2405 360 Panorama

360° panorama photo from Out of this World by Andrew Bodrov. NASA's Mars Exploration Program (Image credit: NASA/JPL-Caltech/MSSS) 
 
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Vivian Sun , Glen Torridon , Nasa Mars Exploration Program Image , Propulsion Laboratory , Exploration Program , Mars Hand Lens Imager ,