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Amazonian chemical weathering rate derived from stony meteorite finds at Meridiani Planum on Mars
Authors
AH Knoll
B Levrard
+34 more
C Schröder
C Schröder
C Schröder
E Jarosewich
FJ Martín-Torres
G Klingelhöfer
HI Savijärvi
I Fleischer
I Fleischer
J Laskar
JA Grant
JA Grant
JA Hurowitz
JP Grotzinger
JW Ashley
JW Head
K Righter
LA Haskin
MP Golombek
MP Golombek
MP Golombek
MR Salvatore
NJ Tosca
PA Bland
PA Bland
PA Bland
PA Bland
R Navarro-González
RE Arvidson
RE Arvidson
RV Morris
RV Morris
SW Squyres
SW Squyres
Publication date
1 January 2016
Publisher
'Springer Science and Business Media LLC'
Doi
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on
PubMed
Abstract
© The Author(s) 2016.Spacecraft exploring Mars such as the Mars Exploration Rovers Spirit and Opportunity, as well as the Mars Science Laboratory or Curiosity rover, have accumulated evidence for wet and habitable conditions on early Mars more than 3 billion years ago. Current conditions, by contrast, are cold, extremely arid and seemingly inhospitable. To evaluate exactly how dry today's environment is, it is important to understand the ongoing current weathering processes. Here we present chemical weathering rates determined for Mars. We use the oxidation of iron in stony meteorites investigated by the Mars Exploration Rover Opportunity at Meridiani Planum. Their maximum exposure age is constrained by the formation of Victoria crater and their minimum age by erosion of the meteorites. The chemical weathering rates thus derived are ~1 to 4 orders of magnitude slower than that of similar meteorites found in Antarctica where the slowest rates are observed on Earth
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info:doi/10.1038%2Fncomms13459
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Stirling Online Research Repository
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