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SEEKING SIGNS OF LIFE ON MARS: A STRATEGY FOR SELECTING AND ANALYZING RETURNED SAMPLES FROM HYDROTHERMAL DEPOSITS.

Campbell, K.A. and the iMOST-Team and Rettberg, Petra (2018) SEEKING SIGNS OF LIFE ON MARS: A STRATEGY FOR SELECTING AND ANALYZING RETURNED SAMPLES FROM HYDROTHERMAL DEPOSITS. 2nd International Mars Sample Return Conference, April 25-27, 2018, Berlin, Germany.

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Abstract

Highly promising locales for biosignature prospecting on Mars are ancient hydrothermal deposits, formed by the interaction of surface water with heat from volcanism or impacts [1-3]. On Earth, they occur throughout the geological record (to at least ~3.5 Ga), preserving robust mineralogical, textural and compositional evidence of thermophilic microbial activity [e.g., 3-5]. Hydrothermal systems were likely present early in Mars’ history [6], including at two of the three finalist candidate landing sites for M2020, Columbia Hills [7-9] and NE Syrtis Major [10 & refs. therein]. Hydrothermal environments on Earth’s surface are varied, constituting subaerial hot spring aprons, mounds and fumaroles; shallow to deep-sea hydrothermal vents (black and white smokers); and vent mounds and hot-spring discharges in lacustrine and fluvial settings. Biological information can be preserved by rapid, spring-sourced mineral precipitation [1,2,9], but also could be altered or destroyed by postdepositional events [5,11,12]. Thus, field observations need to be followed by detailed laboratory analysis to verify potential biosignatures.

Item URL in elib:https://elib.dlr.de/120715/
Document Type:Conference or Workshop Item (Speech)
Title:SEEKING SIGNS OF LIFE ON MARS: A STRATEGY FOR SELECTING AND ANALYZING RETURNED SAMPLES FROM HYDROTHERMAL DEPOSITS.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Campbell, K.A. and the iMOST-Teamka.campbell (at) auckland.ac.nz.UNSPECIFIED
Rettberg, PetraPetra.Rettberg (at) dlr.dehttps://orcid.org/0000-0003-4439-2395
Date:25 April 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Mars, Mars Sample Return campaign, iMOST study
Event Title:2nd International Mars Sample Return Conference
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:April 25-27, 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:29 Jun 2018 10:18
Last Modified:31 Jul 2019 20:18

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