Results 51 to 60 of about 43,126 (119)

Poorly characterized phases in C2M carbonaceous chondrites : proposed structures and significance [PDF]

, 1984
Poorly characterized phases (PCP's) may constitute up to 30 volume percent of some C2M carbonaceous chondrite matrices [1] and are an important key to an understanding of matrix evolution. PCPs are usually fine-grained (
Zolensky, Michael E., Mackinnon, Ian D.R.   +1 more
core  

The Effects of Parent Body Processes on Amino Acids in Carbonaceous Chondrites [PDF]

, 2010
To investigate the effect of parent body processes on the abundance, distribution, and enantiomeric composition of amino acids in carbonaceous chondrites, the water extracts from nine different powdered Cl, CM, and CR carbonaceous chondrites were ...
Glavin, Daniel P., Callahan, Michael P., Dworkin, Jason P., Elsila, Jamie E.   +3 more
core  

New analyses of Antarctic carbonaceous chondrites [PDF]

, 1981
P(論文)New analyses have been made on the Antarctic carbonaceous chondrites ALHA77306 and ALHA77307. Only traces of amino acids have been detected in ALHA77307. Non-protein amino acids were not detected.
Ma, Maw-Suen, Pizzarello, Sandra, Moore, Carleton B., Cronin, John R., Schmitt, Roman A.   +4 more
core   +1 more source

Arrival and magnetization of carbonaceous chondrites in the asteroid belt before 4562 million years ago. [PDF]

Commun Earth Environ, 2020
O'Brien T, Tarduno JA, Anand A, Smirnov AV, Blackman EG, Carroll-Nellenback J, Krot AN.   +6 more
europepmc   +1 more source

Carbon isotopes in bulk carbonaceous chondrites [PDF]

, 1985
The chemical and physical processes involved in the formation of the solar system are examined. Primitive matter has been found on a microscopic scale in a variety of meteorites: fragments of small solar system bodies that were never part of a large ...
Mayeda, T. K., Clayton, R. N., Halbout, J.   +2 more
core  

Pyrolytic studies of carbonaceous matter in Antarctic carbonaceous chondrites [PDF]

, 1987
P(論文)Pyrolysis products of the major carbonaceous matter in six Antarctic carbonaceous chondrites, Y-74662 (C2), Y-791198 (C2), Y-793321 (C2), B-7904 (C2), Y-791717 (C3), and ALH-77307 (C3), have been examined by GC-FID and GC-MS.
Murae, Tatsushi, Masuda, Akimasa, Takahashi, Takeyoshi   +2 more
core  

Formation of the parent bodies of the carbonaceous chondrites

, 1979
We have carried out extensive particle track studies for several C2 chondrites. On the basis of these and the available data on spallogenic stable and radioactive nuclides in several C1 and C2 chondrites, we have constructed a scenario for the ...
Goswami, J. N., Lal, D.
core   +1 more source

Boron concentrations in carbonaceous chondrites

, 1978
We have analyzed B in carbonaceous chondrites in order to clarify a factor of 100 difference between the solar system B abundance derived from the solar photosphere and that inferred from previous meteorite data. Consistent results were obtained from two
Burnett, D. S., Weller, Martha Riherd, Furst, Marian, Tombrello, T. A.   +3 more
core  

Evidence of Microfossils in Carbonaceous Chondrites [PDF]

, 1998
Investigations have been carried out on freshly broken, internal surfaces of the Murchison, Efremovka and Orgueil carbonaceous chondrites using Scanning Electron Microscopes (SEM) in Russia and the Environmental Scanning Electron Microscope (ESEM) in the
Gorlenko, V. M., Hoover, Richard B., Rozanov, Alexei Y., Zhmur, S. I.   +3 more
core  

Supporting data for Spectral Insights into Carbonaceous Chondrites Origins: Correlating Main-Belt Asteroids with CV Chondrites

The dataset for the manuscript "Spectral Insights into Carbonaceous Chondrites Origins: Correlating Main-Belt Asteroids with CV Chondrites" that contains mteoritic spectral data (ATR-absorbance and respective conversion to reflectance and emissivity ...
Singh, Ankit Prakash
core   +1 more source