Pyroclastic Activity at Home Plate in Gusev Crater, Mars

  title={Pyroclastic Activity at Home Plate in Gusev Crater, Mars},
  author={Steven W. Squyres and Oded Aharonson and Benton C. Clark and Barbara A. Cohen and Larry S. Crumpler and Paulo A. de Souza and William H. Farrand and Ralf Gellert and John A. Grant and John P. Grotzinger and Albert F. C. Haldemann and J. R. Johnson and G{\"o}star Klingelh{\"o}fer and Kevin W. Lewis and R. Li and Timothy J. Mccoy and Alfred S. McEwen and Harry Y. McSween and Doug W. Ming and J. M. Moore and Richard V. Morris and Timothy J. Parker and James William Rice and Steven W. Ruff and M. E. Schmidt and Christian Schr{\"o}der and Laurence A. Soderblom and Albert S. Yen},
  pages={738 - 742}
Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarsegrained lower unit lies under a finer-grained upper unit. Textural observations indicate that the lower strata were emplaced in an explosive event, and geochemical considerations favor an explosive volcanic origin over an impact origin. The lower unit likely represents accumulation of pyroclastic materials… 
Alteration mineralogy of Home Plate and Columbia Hills—Formation conditions in context to impact, volcanism, and fluvial activity
The Mars Exploration Rover Spirit investigated the igneous and alteration mineralogy and chemistry of Home Plate and its surrounding deposits. Here, we focus on using thermochemical modeling to
Iron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mössbauer instrument on the Spirit Mars Exploration Rover
[1] Spirit's Mossbauer (MB) instrument determined the Fe mineralogy and oxidation state of 71 rocks and 43 soils during its exploration of the Gusev plains and the Columbia Hills (West Spur, Husband
Geochemical properties of rocks and soils in Gusev Crater, Mars: Results of the Alpha Particle X-Ray Spectrometer from Cumberland Ridge to Home Plate
[1] Geochemical diversity of rocks and soils has been discovered by the Alpha Particle X-Ray Spectrometer (APXS) during Spirit's journey over Husband Hill and down into the Inner Basin from sol 470
The Case for Ancient Hot Springs in Gusev Crater, Mars
New and existing observations of the Home Plate region with observations from field and laboratory work demonstrate that a volcanic hydrothermal system manifesting both hot spring/geyser and fumarolic activity best explains the opaline silica rocks and proximal S-rich materials, respectively.
’ s repository of research publications and other research outputs Alteration mineralogy of the Home Plate and Columbia Hills – formation conditions in context to impact , volcanism , and fluvial activity
The Mars Exploration Rover Spirit investigated the igneous and alteration mineralogy and chemistry of Home Plate and its surrounding deposits. Here, we focus on using thermochemical modeling to
Alteration Processes in Gusev Crater, Mars
Silica deposits on Mars with features resembling hot spring biosignatures at El Tatio in Chile
It is shown that the nodular and digitate silica structures at El Tatio that most closely resemble those on Mars include complex sedimentary structures produced by a combination of biotic and abiotic processes.
Hydrothermal origin of halogens at Home Plate, Gusev Crater
[1] In the Inner Basin of the Columbia Hills, Gusev Crater is Home Plate, an 80 m platform of layered clastic rocks of the Barnhill class with microscopic and macroscopic textures, including a bomb
Chemical and mineralogical trends during acid‐sulfate alteration of pyroclastic basalt at Cerro Negro volcano and implications for early Mars
Acid‐sulfate alteration of pyroclastic basalts in active fumaroles at Cerro Negro volcano, Nicaragua, was studied as a means to infer the mineralogical and chemical consequences of basalt alteration
Basalt-trachybasalt samples in Gale Crater , Mars Journal Item
The ChemCam instrument on the Mars Science Laboratory (MSL) rover, Curiosity, observed numerous igneous float rocks and conglomerate clasts, reported previously. A new statistical analysis of


Basaltic rocks analyzed by the Spirit Rover in Gusev Crater.
Chemical analyses of rocks by the Alpha Particle X-ray Spectrometer are consistent with picritic basalts, containing normative olivine, pyroxenes, plagioclase, and accessory FeTi oxides, which extend the known range of rock compositions composing the martian crust.
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
The Spirit Rover's Athena science investigation at Gusev Crater, Mars.
The Mars Exploration Rover Spirit and its Athena science payload have been used to investigate a landing site in Gusev crater, but no clear evidence for lacustrine sedimentation has been found to date.
Rocks of the Columbia Hills
[1] The Mars Exploration Rover Spirit has identified five distinct rock types in the Columbia Hills of Gusev crater. Clovis Class rock is a poorly sorted clastic rock that has undergone substantial
Distribution of rocks on the Gusev Plains and on Husband Hill, Mars
The population of rocks larger than 15 cm in diameter was measured at 36 locations imaged by the Spirit rover over ∼ 4 km of the traverse across the Gusev plains and Husband Hill in Gusev crater on
Mössbauer mineralogy of rock, soil, and dust at Gusev crater, Mars: Spirit's journey through weakly altered olivine basalt on the plains and pervasively altered basalt in the Columbia Hills
The Moessbauer spectrometer on Spirit measured the oxidation state of Fe, identified Fe-bearing phases, and measured relative abundances of Fe among those phases for surface materials on the plains
The rocks of Gusev Crater as viewed by the Mini‐TES instrument
[1] The Miniature Thermal Emission Spectrometer (Mini-TES) on board the Mars Exploration Rover Spirit is part of a payload designed to investigate whether a lake once existed in Gusev Crater.
Overview of the Spirit Mars Exploration Rover Mission to Gusev Crater: Landing site to Backstay Rock in the Columbia Hills
Spirit landed on the floor of Gusev Crater and conducted initial operations on soil-covered, rock-strewn cratered plains underlain by olivine-bearing basalts. Plains surface rocks are covered by
Redox control of sulfur degassing in silicic magmas
Explosive eruptions involve mainly silicic magmas in which sulfur solubility and diffusivity are low. This inhibits sulfur exsolution during magma uprise as compared to more mafic magmas such as