Results 131 to 140 of about 52,439 (271)

Hydrogen-bearing phases in carbonaceous (and other) chondrites [PDF]

, 2023
Thomas Rigaudier, Laurette Piani, Yves Marrocchi, Margot Debruycker   +3 more
openalex   +1 more source

Accretion of differentiated achondritic and aqueously altered chondritic materials in the early solar system—Significance of an igneous fragment in the CM chondrite NWA 12651 [PDF]

, 2019
S. Ebert, Markus Patzek, Sarah Lentfort, A. Bischoff   +3 more
openalex   +1 more source

A study of the morphology, composition and mineral associations of Fe-Ni sulphides in CM carbonaceous chondrites [PDF]

, 2004
A study of the compositional and textural variations between Fe-Ni sulphides in a suite of pristine to extensively aqueously altered CM chondrites, using SEM and EMP ...
Bullock, E. S., Gounelle, M., Grady, Monica, Russell, S. S.   +3 more
core  

Signatures of the post-hydration heating of highly aqueously altered CM carbonaceous chondrites and implications for interpreting asteroid sample returns

, 2020
P. Lindgren, Martin Lee, R. Sparkes, R. C. Greenwood, R. D. Hanna, I. A. Franchi, A. J. King, Cameron J. Floyd, Pierre‐Etienne Martin, V. E. Hamilton, C. W. Haberle   +10 more
openalex   +2 more sources

The ingredients of the “Subsolar” noble gas component [PDF]

, 2003
On the basis of several experiments on separates of the EH5 chondrite St. Mark–s, we will argue that the 'subsolar' noble gas component is a mixture of solar-like, Q- and terrestrial noble ...
Baur, H., Busemann, H., Eugster, O., Wieler, R.   +3 more
core  

Laser Irradiation of Carbonaceous Chondrite Simulants: Space-weathering Implications for C-complex Asteroids

The Planetary Science Journal
Surfaces of carbonaceous asteroids (C-complex) have shown diverse, contrasting spectral variations, which may be related to space weathering. We performed laser irradiation experiments on CI and CM simulant material under vacuum to mimic the spectral ...
Andy J. López-Oquendo, Mark J. Loeffler, David E. Trilling   +2 more
doaj   +1 more source

Altitude Profile and Isotopic Composition for N2 From Pioneer Venus Mass Spectra

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract We report the highest resolution altitude profile and isotopic composition for N2 at Venus, to date. These results were obtained through re‐analysis of data acquired by the Pioneer Venus Large Probe Neutral Mass Spectrometer (LNMS). The N2 is non‐uniformly mixed across the clouds and sub‐cloud atmosphere (∼59–15 km) yet uniformly mixed across ...
R. Mogul, S. S. Limaye, M. J. Way
wiley   +1 more source

Were Presolar Grains Destroyed by the Nebular Process Responsible for the Volatile Element Fractionation? [PDF]

, 2008
We present SiC abundances from a number of CM and CR chondrites using NanoSIMS raster ion imaging of acid residues.
Alexander, C. M. O'd., Busemann, H., Davidson, J., Franchi, I. A., Grady, M. M., Hoppe, P., Nittler, L. R.   +6 more
core  

The mineralogy and alteration history of the Yamato-type (CY) carbonaceous chondrites

, 2023
Martin D. Suttle, A. J. King, Cheryl S. Harrison, Q. H. S. Chan, A. Greshake, R. Bartoschewitz, Andrew G. Tomkins, T. Salge, P. F. Schofield, S. S. Russell   +9 more
openalex   +1 more source

Stable Nitrogen Isotope Analysis of Amino Acids by Orbitrap Mass Spectrometry: Application for Extraterrestrial Samples

Rapid Communications in Mass Spectrometry, Volume 39, Issue 23, 15 December 2025.
ABSTRACT Background Obtaining isotopic data on soluble organic compounds, such as amino acids, in extraterrestrial samples is crucial for understanding their origins, prebiotic chemistry, and potential contamination. Conventional GC‐IRMS requires grams of material to measure isotopic compositions, limiting the analysis of low‐concentration organics in ...
O. M. McIntosh, A. A. Baczynski, M. Matney, H. L. McLain, K. K. Farnsworth, J. P. Dworkin, D. P. Glavin, J. E. Elsila, H. Xie, K. H. Freeman   +9 more
wiley   +1 more source