Encounters with an unearthly mudstone: Understanding the first mudstone found on Mars

  title={Encounters with an unearthly mudstone: Understanding the first mudstone found on Mars},
  author={Juergen Schieber and David L. Bish and Max Laurence Coleman and Mark H. Reed and Elisabeth M. Hausrath and John W. Cosgrove and Sanjeev Gupta and Michelle E. Minitti and Kenneth S. Edgett and Mike Malin},
The Sheepbed mudstone forms the base of the strata examined by the Curiosity rover in Gale Crater on Mars, and is the first bona fide mudstone known on another planet. From images and associated data, this contribution proposes a holistic interpretation of depositional regime, diagenesis and burial history. A lake basin probably received sediment pulses from alluvial fans. Bed cross‐sections show millimetre to centimetre‐scale layering due to distal pulses of fluvial sediment injections (fine… 
An interval of high salinity in ancient Gale crater lake on Mars
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 Hesperian (around
Source‐to‐Sink Terrestrial Analogs for the Paleoenvironment of Gale Crater, Mars
It is shown that the geochemistry and mineralogy of most of the fine‐grained sedimentary rocks in Gale crater display first‐order similarities with sediments generated in climates that resemble those of present‐day Iceland, while other parts of the stratigraphy indicate even colder baseline climate conditions.
Shaler: in situ analysis of a fluvial sedimentary deposit on Mars
This paper characterizes the detailed sedimentology of a fluvial sandbody on Mars for the first time and interprets its depositional processes and palaeoenvironmental setting. Despite numerous
Predicting the Mechanical and Fracture Properties of Mars Analog Sedimentary Lithologies
Rock fractures and veins have been well documented by the Curiosity rover in the lithologies within Gale crater, Mars, and an understanding of the rock mechanical properties of Mars analog samples
Mineralogy and geochemistry of sedimentary rocks and eolian sediments in Gale crater, Mars_ A review after six Earth years of exploration with Curiosity
The Mars Science Laboratory Curiosity rover arrived at Mars in August 2012 with a primary goal of characterizing the habitability of ancient and modern environments. Curiosity was sent to Gale crater
Extraformational sediment recycling on Mars.
The results permit prediction that lithified deltaic sediments at the Perseverance and Rosalind Franklin rover field sites could contain extraformational recycled sediment, indicating the dominance of physical weathering processes during the second known cycle of tectonism.
Early diagenesis at and below Vera Rubin ridge, Gale crater, Mars
Data returned by NASA’s Mars Science Laboratory Curiosity rover showed evidence for abundant secondary materials, including Fe‐oxides, phyllosilicates, and an amorphous component on and below Vera
Mineralogy and stratigraphy of the Gale crater rim, wall, and floor units
The Curiosity rover has detected diverse lithologies in float rocks and sedimentary units on the Gale crater floor, interpreted to have been transported from the rim. To understand their provenance,


Subaqueous shrinkage cracks in the Sheepbed mudstone: Implications for early fluid diagenesis, Gale crater, Mars
The Sheepbed mudstone, Yellowknife Bay formation, Gale crater, represents an ancient lakebed now exhumed and exposed on the Martian surface. The mudstone has four diagenetic textures, including a
Porosity Reduction and Major Controls on Diagenesis of Cretaceous-Paleocene Volcaniclastic and Arkosic Sandstone, Middle Park Basin, Colorado
ABSTRACT Thin-section and X-ray diffraction analyses of 31 outcrop samples show that the early diagenesis of heterogeneous volcaniclastic and arkosic sandstone and conglomerate of the Middle Park
Ancient and recent clay formation on Mars as revealed from a global survey of hydrous minerals in crater central peaks
Clay minerals on Mars have commonly been interpreted as the remnants of pervasive water‐rock interaction during the Noachian period (>3.7 Ga). This history has been partly inferred by observations of
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars
The absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low-temperature, circumneutral pH, rock-dominated aqueous conditions during the early history of Mars.
Chemical variations in Yellowknife Bay formation sedimentary rocks analyzed by ChemCam on board the Curiosity rover on Mars
The Yellowknife Bay formation represents a ~5 m thick stratigraphic section of lithified fluvial and lacustrine sediments analyzed by the Curiosity rover in Gale crater, Mars. Previous works have
Calcium sulfate veins characterized by ChemCam/Curiosity at Gale crater, Mars
The Curiosity rover has analyzed abundant light‐toned fracture‐fill material within the Yellowknife Bay sedimentary deposits. The ChemCam instrument, coupled with Mastcam and ChemCam/Remote Micro
Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars
Sedimentary rocks at Yellowknife Bay (Gale crater) on Mars include mudstone sampled by the Curiosity rover, indicating that clay mineral formation on Mars extended beyond Noachian time.
Diagenesis in the Murray Formation, Gale Crater, Mars
The Mars Science Laboratory (MSL) Curiosity rover began investigating the rocks of Mt. Sharp in September 2014. The Murray formation is the lowermost unit, which is mostly comprised of finely
Characteristics of terrestrial ferric oxide concretions and implications for mars
Concretions are diagenetic products of cementation that establish significant records of groundwater flow through porous sedimentary deposits. Common spheroidal ferric oxide concretions form by
Alkaline volcanic rocks from the Columbia Hills, Gusev crater, Mars
[1] Irvine, Backstay, and Wishstone are the type specimens for three classes of fine-grained or fragmental, relatively unaltered rocks with distinctive thermal emission spectra, found as float on the