J
John Parnell
Researcher at University of Aberdeen
Publications - 341
Citations - 7255
John Parnell is an academic researcher from University of Aberdeen. The author has contributed to research in topics: Fluid inclusions & Source rock. The author has an hindex of 42, co-authored 311 publications receiving 6512 citations. Previous affiliations of John Parnell include New Mexico Institute of Mining and Technology & Queen's University Belfast.
Papers
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Journal ArticleDOI
Impact-generated hydrothermal systems on Earth and Mars
Gordon R. Osinski,Livio L. Tornabene,Neil R. Banerjee,Charles S. Cockell,Roberta L. Flemming,Matthew R.M. Izawa,Jenine McCutcheon,John Parnell,L. J. Preston,Annemarie E. Pickersgill,Alexandra Pontefract,Haley M. Sapers,Gordon Southam +12 more
TL;DR: Marzo et al. as discussed by the authors showed that most impact events that result in the formation of complex impact craters (i.e., >2-4 and >5-10 km diameter on Earth and Mars, respectively) are potentially capable of generating a hydrothermal system.
Book
Geofluids : origin, migration and evolution of fluids in sedimentary basins
TL;DR: The fundamental importance of fluid migration and evolution to rock composition and structure is reflected in a growing interest in fluid processes, including a series of successful conferences on water-rock interaction.
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Groundwater activity on Mars and implications for a deep biosphere
Joseph R. Michalski,Joseph R. Michalski,Javier Cuadros,Paul B. Niles,John Parnell,A. Deanne Rogers,S. P. Wright +6 more
TL;DR: In this article, an evaluation of the possibility of groundwater upwelling, which might provide clues to subsurface habitability, reveals evidence in the deep McLaughlin crater for clays and carbonates that probably formed in an alkaline, groundwater-fed lacustrine setting.
Journal ArticleDOI
Searching for life on Mars: selection of molecular targets for ESA's aurora ExoMars mission
John Parnell,David C. Cullen,Mark R. Sims,Stephen A. Bowden,Charles S. Cockell,Richard W. Court,Pascale Ehrenfreund,Francois Gaubert,William D. Grant,Victor Parro,Michel Rohmer,Mark A. Sephton,Helga Stan-Lotter,Andrew Steele,Jan Toporski,Jorge L. Vago +15 more
TL;DR: The European Space Agency's ExoMars mission will seek evidence of organic compounds of biological and non-biological origin at the martian surface, and it is necessary to define and prioritize specific molecular targets for antibody development.
Journal ArticleDOI
Weighing the deep continental biosphere.
Sean McMahon,John Parnell +1 more
TL;DR: The evidence continues to support a deep continental biomass estimate of 10(16) -10(17) g C, or 2-19% of Earth's total biomass.