The nature, origin and modification of insoluble organic matter in chondrites, the major source of Earth's C and N

CMOD Alexander, GD Cody, BT De Gregorio, LR Nittler… - Geochemistry, 2017 - Elsevier
All chondrites accreted∼ 3.5 wt.% C in their matrices, the bulk of which was in a
macromolecular solvent and acid insoluble organic material (IOM). Similar material to IOM is …

[HTML][HTML] The aqueous alteration of CM chondrites, a review

MD Suttle, AJ King, PF Schofield, H Bates… - … et Cosmochimica Acta, 2021 - Elsevier
The CM chondrites are samples of primitive water-rich asteroids formed during the early
solar system. They record significant interaction between liquid water and silicate rock …

A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu

T Noguchi, T Matsumoto, A Miyake, Y Igami… - Nature …, 2023 - nature.com
Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies
gradually experience an alteration in composition, structure and optical properties through a …

Asteroid (101955) Bennu's weak boulders and thermally anomalous equator

B Rozitis, AJ Ryan, JP Emery, PR Christensen… - Science …, 2020 - science.org
Thermal inertia and surface roughness are proxies for the physical characteristics of
planetary surfaces. Global maps of these two properties distinguish the boulder population …

Fine-regolith production on asteroids controlled by rock porosity

S Cambioni, M Delbo, G Poggiali, C Avdellidou… - Nature, 2021 - nature.com
Spacecraft missions have observed regolith blankets of unconsolidated subcentimetre
particles on stony asteroids,–. Telescopic data have suggested the presence of regolith …

A history of mild shocks experienced by the regolith particles on hydrated asteroid Ryugu

N Tomioka, A Yamaguchi, M Ito, M Uesugi, N Imae… - Nature …, 2023 - nature.com
Micrometeorites, a possible major source of Earth's water, are thought to form from explosive
dispersal of hydrated chondritic materials during impact events on their parental asteroids …

[HTML][HTML] Modal mineralogy of CI and CI-like chondrites by X-ray diffraction

AJ King, PF Schofield, KT Howard… - … et Cosmochimica Acta, 2015 - Elsevier
The CI chondrites are some of the most hydrated meteorites available to study, making them
ideal samples with which to investigate aqueous processes in the early Solar System. Here …

Thermal alteration of CM carbonaceous chondrites: mineralogical changes and metamorphic temperatures

AJ King, PF Schofield, SS Russell - Geochimica et Cosmochimica Acta, 2021 - Elsevier
The CM carbonaceous chondrite meteorites provide a record of low temperature (< 150° C)
aqueous reactions in the early solar system. A number of CM chondrites also experienced …

Organic synthesis on Mars by electrochemical reduction of CO2

A Steele, LG Benning, R Wirth, S Siljeström… - Science …, 2018 - science.org
The sources and nature of organic carbon on Mars have been a subject of intense research.
Steele et al.(2012) showed that 10 martian meteorites contain macromolecular carbon …

Prevalence and nature of heating processes in CM and C2-ungrouped chondrites as revealed by insoluble organic matter

E Quirico, L Bonal, P Beck, H Yabuta… - … et Cosmochimica Acta, 2018 - Elsevier
Chondrites are exhumed from their parent bodies by impacts, which at the same time can
result in heating and mechanical modification (compaction, deformation, fracturing, etc.) …