Elemental Composition of the Martian Crust

  title={Elemental Composition of the Martian Crust},
  author={Harry Y. McSween and G. Jeffrey Taylor and Michael Bruce Wyatt},
  pages={736 - 739}
Mars Matters Several decades of exploration by orbiting and in situ spacecraft, together with analysis of martian meteorites, have resulted in a wealth of data on the chemical composition of Mars' crust. McSween et al. (p. 736) review these data, which help infer the planet's geological history, discrediting previous ideas suggesting Mars had a wet mantle—similar to that of Earth—and cautioning that martian meteorites are not representative of the planet's crust. The composition of Mars’ crust… Expand
2.10 – Mars
Of all the planets, Mars is the most Earthlike, inviting geochemical comparisons. Geochemical data for Mars are derived from spacecraft remote sensing, surface measurements and Martian meteorites.Expand
Core Formation and Mantle Differentiation on Mars
Geochemical investigation of Martian meteorites (SNC meteorites) yields important constraints on the chemical and geodynamical evolution of Mars. These samples may not be representative of the wholeExpand
Combining meteorites and missions to explore Mars
The history inferred from martian meteorites conflicts with results from recent Mars missions, calling into doubt whether the igneous histor y inferred from the meteorites is applicable to Mars as a whole. Expand
Evidence for extremely rapid magma ocean crystallization and crust formation on Mars
Concomitant high-precision U–Pb ages and Hf-isotope compositions of ancient zircons from the NWA 7034 Martian meteorite suggest that Mars must have formed its primordial crust extremely swiftly, less than 20 million years after the formation of the Solar System. Expand
The bulk composition of Mars
Abstract An accurate assessment of the bulk chemical composition of Mars is fundamental to understanding planetary accretion, differentiation, mantle evolution, the nature of the igneous parent rocksExpand
Origin and age of the earliest Martian crust from meteorite NWA 7533
Evidence for early crustal differentiation implies that the Martian crust, and its volatile inventory, formed in about the first 100 million years of Martian history, coeval with earliest crust formation on the Moon and the Earth. Expand
Mineralogy of the Martian Surface
The past fifteen years of orbital infrared spectroscopy and in situ exploration have led to a new understanding of the composition and history of Mars. Globally, Mars has a basaltic upper crustExpand
Mars has an extensive, long-lived sedimentary record that is complimentary to the terrestrial record, bearing both first-order similarities and first-order differences. The igneous record is composedExpand
Volcanism on Mars controlled by early oxidation of the upper mantle
Detailed information about the chemical composition and evolution of Mars has been derived principally from the SNC (shergottite–nakhlite–chassignite) meteorites, which are genetically relatedExpand
A Unique Piece of Mars
A meteorite with a chemical makeup resembling that of rocks from Mars' Gusev Crater has been identified, and a basaltic breccia unique among known martian meteorites with respect to age, oxygen isotopes, and petrology is found. Expand


Constraints on the composition and petrogenesis of the Martian crust
[1] Spectral interpretation that silicic rocks are widespread on Mars implies that Earth's differentiated crust is not unique. Evaluation of observations bearing on the composition of the MartianExpand
Chemical composition and accretion history of terrestrial planets
  • H. Wänke, G. Dreibus
  • Physics
  • Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1988
The high concentrations of moderately siderophile elements (Ni, Co, etc.) in the Earth’s mantle and the similarity of their Cl normalized abundances to those of moderately volatile elements (F, Na,Expand
The Accretion, Composition and Early Differentiation of Mars
The early development of Mars is of enormous interest, not just in its own right, but also because it provides unique insights into the earliest history of the Earth, a planet whose origins have beenExpand
Evidence for magmatic evolution and diversity on Mars from infrared observations
Observations show that the martian crust, while dominated by basalt, contains a diversity of igneous materials whose range in composition from picritic basalts to granitoids rivals that found on the Earth. Expand
Global mapping of Martian hematite mineral deposits: Remnants of water‐driven processes on early Mars
Near-global (60°S to 60°N) thermal infrared mapping by the Thermal Emission Spectrometer (TES) on Mars Global Surveyor has revealed unique deposits of crystalline gray hematite (α-Fe2O3) exposed atExpand
Mineralogical constraints on the high-silica martian surface component observed by TES
Abstract The Thermal Emission Spectrometer (TES) has observed a high-silica material in the dark regions of Mars that is spectrally similar to obsidian glass and may have a volcanic origin. AnExpand
Global geologic context for rock types and surface alteration on Mars
Petrologic interpretations of thermal emission spectra from Mars orbiting spacecraft indicate the widespread occurrence of surfaces having basaltic and either andesitic or partly altered basaltExpand
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 theExpand
Sedimentary rocks at Meridiani Planum: Origin, diagenesis, and implications for life on Mars
The MER rover Opportunity has carried out the first outcrop-scale investigation of ancient sedimentary rocks on Mars. The rocks, exposed in craters and along fissures in Meridiani Planum, areExpand
Water alteration of rocks and soils on Mars at the Spirit rover site in Gusev crater
Investigation of soils, rock coatings and rock interiors by the Spirit rover from sol (martian day) 1 to sol 156 provides evidence for limited but unequivocal interaction between water and volcanic rocks of the Gusev plains. Expand