Results 31 to 40 of about 7,944 (214)

Distant Formation and Differentiation of Outer Main Belt Asteroids and Carbonaceous Chondrite Parent Bodies

AGU Advances, 2022
Volatile compositions of asteroids provide information on the Solar System history and the origins of Earth's volatiles. Visible to near‐infrared observations at wavelengths of 4) and low temperatures (10 au) and could be transported to their current ...
H. Kurokawa, T. Shibuya, Y. Sekine, B. L. Ehlmann, F. Usui, S. Kikuchi, M. Yoda   +6 more
doaj   +1 more source

Trace element geochemistry of ordinary chondrite chondrules: the type I/type II chondrule dichotomy [PDF]

, 2015
We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations ...
Alard, Olivier, Gounelle, Matthieu, Jacquet, Emmanuel   +2 more
core   +2 more sources

A divergent heritage for complex organics in Isheyevo lithic clasts [PDF]

, 2017
Primitive meteorites are samples of asteroidal bodies that contain a high proportion of chemically complex organic matter (COM) including prebiotic molecules such as amino acids, which are thought to have been delivered to Earth via impacts during the ...
Alexander, Alexander, Alexander, Alexander, Alexander N. Krot, Alt, Altwegg, Aléon, Becker, Belloche, Bergin, Biver, Bizzarro, Bockelée-Morvan, Bollard, Bonal, Bonal, Briani, Brownlee, Bunch, Busemann, Chakraborty, Ciesla, Clayton, Cleeves, Cleeves, Coakley, Cobb, Cody, Cody, Cooper, Daniel P. Wielandt, Davidson, De Gregorio, De Gregorio, De Marcellus, De Marcellus, Deloule, Dodson-Robinson, Doyle, Dworkin, Ehrenfreund, Elishevah M.M.E. van Kooten, Fitzsimons, Floss, Franke, Garenne, Garvie, Grady, Hartogh, Heays, Herbst, Hily-Blant, Hily-Blant, Ian A. Franchi, Injerd, Iqbal, Ishii, Ivanova, Jes K. Jørgensen, Jon P. Ramsey, Jørgensen, Kazuhide Nagashima, Kebukawa, Keller, Kerridge, King, Krot, Kuga, Lajaunie, Larsen, Laurent, Le Guillou, Lis, Lyons, Martin Bizzarro, Martin Schiller, Marty, Marty, Messenger, Millar, Mumma, Mūller, Nakamura-Messenger, Paton, Piani, Pizzarello, Pizzarello, Pizzarello, Remusat, Remusat, Remusat, Robert, Rodgers, Roueff, Schrader, Shinnaka, Starkey, Susanne F. Wampfler, Søren Frimann, Takeshi Kasama, Terzieva, Tomeoka, Van Kooten, Vollmer, Walsh, Wampfler, Wasson, Weisberg, Wirström, Yabuta, Yang, Zega, Zoltan I. Balogh, Zubavichus   +114 more
core   +3 more sources

A Mineralogical Context for the Organic Matter in the Paris Meteorite Determined by A Multi-Technique Analysis

Life, 2019
This study is a multi-technique investigation of the Paris carbonaceous chondrite directly applied on two selected 500 × 500 µm² areas of a millimetric fragment, without any chemical extraction.
Manale Noun, Donia Baklouti, Rosario Brunetto, Ferenc Borondics, Thomas Calligaro, Zélia Dionnet, Louis Le Sergeant d’Hendecourt, Bilal Nsouli, Isabelle Ribaud, Mohamad Roumie, Serge Della-Negra   +10 more
doaj   +1 more source

Grain Size Effects on UV–MIR (0.2–14 μm) Spectra of Carbonaceous Chondrite Groups

The Planetary Science Journal, 2023
Carbonaceous chondrites are among the most important meteorite types and have played a vital role in deciphering the origin and evolution of our solar system.
David C. Cantillo, Vishnu Reddy, Adam Battle, Benjamin N. L. Sharkey, Neil C. Pearson, Tanner Campbell, Akash Satpathy, Mario De Florio, Roberto Furfaro, Juan Sanchez   +9 more
doaj   +1 more source

Delivery of Dark Material to Vesta via Carbonaceous Chondritic Impacts

, 2012
NASA's Dawn spacecraft observations of asteroid (4) Vesta reveal a surface with the highest albedo and color variation of any asteroid we have observed so far. Terrains rich in low albedo dark material (DM) have been identified using Dawn Framing Camera (
Adams, Andreas Nathues, Andrew W. Beck, Beck, Binzel, Binzel, Bogard, Bottke, Bottke, Buchanan, Buchanan, Christopher T. Russell, Cloutis, Cloutis, Daniel D. Durda, David Blewett, David Mittlefehldt, David Nesvorny, David P. O’Brien, Debra Buczkowski, Desnoyers, Edward A. Cloutis, Elizabeth M. Palmer, Gaffey, Gaffey, Gomes, Gounelle, Grady, Harry Y. McSween, Hasegawa, Hiroi, Holger Sierks, Holsapple, Jaumann, Jean-Philippe Combe, Jennifer E.C. Scully, Jian-Yang Li, Jutzi, Keil, Kris J. Becker, Le Corre, Levison, Love, Love, Lucille Le Corre, Mayne, Megha U. Bhatt, Melosh, Michael J. Gaffey, Mittlefehldt, Nesvorny, Nesvorny´, O’Brien, Paul J. Mann, Reddy, Reddy, Rivkin, Robert Gaskell, Rubin, Sierks, Svetsov, Taylor, Thomas, Thomas B. McCord, Tsiganis, Vishnu Reddy, Wasson, William F. Bottke, Wilson, Wilson, Wilson, Zolensky   +71 more
core   +1 more source

Exploring Exogenic Sources for the Olivine on Asteroid (4) Vesta

, 2015
The detection of olivine on Vesta is interesting because it may provide critical insights into planetary differentiation early in our Solar System's history.
Cloutis, Edward A., Corre, Lucille Le, Dunn, Tasha, Izawa, Matthew R. M., Mann, Paul, Nathues, Andreas, Reddy, Vishnu, Sanchez, Juan A.   +7 more
core   +1 more source

A geochemical study of the winonaites: Evidence for limited partial melting and constraints on the precursor composition [PDF]

, 2017
The winonaites are primitive achondrites which are associated with the IAB iron meteorites. Textural evidence implies heating to at least the Fe, Ni–FeS cotectic, but previous geochemical studies are ambiguous about the extent of silicate melting in ...
Benedix, Gretchen K., Bland, Philip A., Hammond, Samantha J., Hunt, Alison C., Kreissig, Katharina, Rehkämper, Mark, Strekopytov, Stanislav   +6 more
core   +2 more sources

Protracted Timescales for Nebular Processing of First-formed Solids in the Solar System

The Astrophysical Journal, 2023
The calcium–aluminum-rich inclusions (CAIs) from chondritic meteorites are the first solids formed in the solar system. Rim formation around CAIs marks a time period in early solar system history when CAIs existed as free-floating objects and had not yet
Prajkta Mane, Maitrayee Bose, Meenakshi Wadhwa, Céline Defouilloy   +3 more
doaj   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source