Results 111 to 120 of about 69,839 (285)

Organic Matter in Carbonaceous Chondrites [PDF]

Science, 1966
H C, Urey, J S, Lewis, A L, Burlingame, H K, Schnoes, M H, Studier, R, Hayatsu, E, Anders   +6 more
openaire   +3 more sources

Cometary micrometeorites and input of prebiotic compounds

BIO Web of Conferences, 2014
The apparition of life on the early Earth was probably favored by inputs of extraterrestrial matter brought by carbonaceous chondrite-like objects or cometary material. Interplanetary dust collected nowadays on Earth is related to carbonaceous chondrites
Engrand C.
doaj   +1 more source

Occurrence and characterization of nanosulfide‐rich regions on asteroid Ryugu: Insights from mackinawite and pyrrhotite

Meteoritics &Planetary Science, Volume 61, Issue 1, Page 168-181, January 2026.
Abstract Samples returned from asteroid Ryugu by the Hayabusa2 mission are dominated by fine‐grained matrix material made of phyllosilicates and nanosulfides. Here, we report the mineralogical, textural, and chemical characteristics of nanosulfide‐rich regions identified in Ryugu particles.
Roberto Conconi, Hugues Leroux, Maya Marinova, Sylvain Laforet, Damien Jacob, Léna Jossé, Alice Aléon‐Toppani, Zélia Dionnet, Rosario Brunetto, Corentin Le Guillou   +9 more
wiley   +1 more source

The Loongana (CL) group of carbonaceous chondrites

Geochimica et Cosmochimica Acta, 2021
K. Metzler, D. Hezel, J. Barosch, E. Wölfer, J. Schneider, J. Hellmann, J. Berndt, A. Stracke, J. Gattacceca, R. Greenwood, I. Franchi, C. Burkhardt, T. Kleine   +12 more
semanticscholar   +1 more source

Facies mosaic distribution and stratigraphic disorder of a mixed carbonate–siliciclastic tidal succession

Sedimentology, Volume 73, Issue 1, Page 40-82, January 2026.
ABSTRACT Complex stratigraphic arrangements may be generated through lateral facies transitions from the strata of aeolian depositional systems into bordering peritidal deposits. In such scenarios, sedimentary architectural complexity and associated facies heterogeneities are governed by the interplay between autogenic processes inherent to tidal ...
Victor J. P. Hême de Lacotte, Chester H. C. Davies, Briony J. Bowler, Stuart M. Clarke, A. Graham Leslie, Douglas A. Sprinkel   +5 more
wiley   +1 more source

Gamma-Ray-Induced Amino Acid Formation during Aqueous Alteration in Small Bodies: The Effects of Compositions of Starting Solutions

Life
Organic compounds, such as amino acids, are essential for the origin of life, and they may have been delivered to the prebiotic Earth from extra-terrestrial sources, such as carbonaceous chondrites.
Akari Ishikawa, Yoko Kebukawa, Kensei Kobayashi, Isao Yoda   +3 more
doaj   +1 more source

Sugars in Carbonaceous Chondrites [PDF]

Goldschmidt Abstracts, 2020
Yoshihiro Furukawa, Yoshito Chikaraishi, Naohiko Ohkouchi, Nanako Ogawa, Daniel Glavin, Jason Dworkin, Chiaki Abe, Tomoki Nakamura   +7 more
openaire   +1 more source

Identification of Magnetite in B-type Asteroids

, 2010
Spectrally blue (B-type) asteroids are rare, with the second discovered asteroid Pallas being the largest and most famous example. We conducted a focused, infrared spectroscopic survey of B-type asteroids to search for water-related features in these ...
Adams, Bin Yang, Binzel, Brearley, Bus, Campins, Campins, Clark, Cunningham, David Jewitt, Fernàndez, Gaffey, Green, Hiroi, Hsieh, Hyman, Jewitt, Jewitt, Jewitt, Kasuga, Kojima, Licandro, Mason, McKinley, McSween, Ohtsuka, Rivkin, Tedesco, Tholen, Whipple, Yang, Yang, Zolensky   +32 more
core   +1 more source

Mineralogy and matrix composition of CR chondrites Renazzo and EET 87770, and ungrouped chondrites Essebi and MAC 87300 [PDF]

The fine-grained mineralogy of the matrix of two CR chondrites, Renazzo and EET 87770, and the ungrouped (but possible related) Essebi and MAC 87300 chondrites was characterized using standard microprobe (focussed beam) and transmission electron ...
Zolensky, Michael E.
core   +1 more source

Spectral variability on primitive asteroids of the Themis and Beagle families: space weathering effects or parent body heterogeneity?

, 2016
Themis is an old and statistically robust asteroid family populating the outer main belt, and resulting from a catastrophic collision that took place 2.5$\pm$1.0 Gyr ago.
Barucci, M. A., Campins, H., Fornasier, S., Lantz, C., Nesvorny, D., Perna, D.   +5 more
core   +3 more sources