Geologic constraints on early Mars climate

ES Kite - Space Science Reviews, 2019 - Springer
Early Mars climate research has well-defined goals (MEPAG 2018). Achieving these goals
requires geologists and climate modelers to coordinate. Coordination is easier if results are …

Paleo-rock-hosted life on Earth and the search on Mars: a review and strategy for exploration

TC Onstott, BL Ehlmann, H Sapers, M Coleman… - Astrobiology, 2019 - liebertpub.com
Here we review published studies on the abundance and diversity of terrestrial rock-hosted
life, the environments it inhabits, the evolution of its metabolisms, and its fossil biomarkers to …

An interval of high salinity in ancient Gale crater lake on Mars

W Rapin, BL Ehlmann, G Dromart, J Schieber… - Nature …, 2019 - nature.com
Precipitated minerals, including salts, are primary tracers of atmospheric conditions and
water chemistry in lake basins. Ongoing in situ exploration by the Curiosity rover of …

Independent confirmation of a methane spike on Mars and a source region east of Gale Crater

M Giuranna, S Viscardy, F Daerden, L Neary… - Nature …, 2019 - nature.com
Reports of methane detection in the Martian atmosphere have been intensely debated. The
presence of methane could enhance habitability and may even be a signature of life …

The potential science and engineering value of samples delivered to Earth by Mars sample return: International MSR Objectives and Samples Team (iMOST)

DW Beaty, MM Grady, HY McSween… - … & Planetary Science, 2019 - Wiley Online Library
Return of samples from the surface of Mars has been a goal of the international Mars
science community for many years. Affirmation by NASA and ESA of the importance of Mars …

Evidence for plunging river plume deposits in the Pahrump Hills member of the Murray formation, Gale crater, Mars

KM Stack, JP Grotzinger, MP Lamb, S Gupta… - …, 2019 - Wiley Online Library
Recent robotic missions to Mars have offered new insights into the extent, diversity and
habitability of the Martian sedimentary rock record. Since the Curiosity rover landed in Gale …

Mars Science Laboratory observations of chloride salts in Gale crater, Mars

NH Thomas, BL Ehlmann, PY Meslin… - Geophysical …, 2019 - Wiley Online Library
Abstract The Mars Science Laboratory Curiosity rover is traversing a sequence of stratified
sedimentary rocks in Gale crater that contain varied eolian, fluviodeltaic, and lake deposits …

Mineral‐filled fractures as indicators of multigenerational fluid flow in the Pahrump Hills member of the Murray formation, Gale crater, Mars

RE Kronyak, LC Kah, KS Edgett… - Earth and Space …, 2019 - Wiley Online Library
Mineral‐filled fractures (veins) are valuable indicators of deformation and fluid flow within a
sedimentary package. Information obtained from vein morphology, texture, and chemistry …

A diverse array of fluvial depositional systems in Arabia Terra: Evidence for mid‐Noachian to early Hesperian rivers on Mars

JM Davis, S Gupta, M Balme… - Journal of …, 2019 - Wiley Online Library
Branching to sinuous ridges systems, hundreds of kilometers in length and comprising
layered strata, are present across much of Arabia Terra, Mars. These ridges are interpreted …

The sedimentary cycle on early Mars

SM McLennan, JP Grotzinger… - Annual Review of …, 2019 - annualreviews.org
Two decades of intensive research have demonstrated that early Mars (2 Gyr) had an active
sedimentary cycle, including well-preserved stratigraphic records, understandable within a …