Results 11 to 20 of about 64,440 (194)

Non-destructive elemental analysis of a carbonaceous chondrite with direct current Muon beam at MuSIC. [PDF]

Sci Rep, 2017
Electron- or X-ray-induced characteristic X-ray analysis has been widely used to determine chemical compositions of materials in vast research fields. In recent years, analysis of characteristic X-rays from muonic atoms, in which a muon is captured, has ...
Terada K, Sato A, Ninomiya K, Kawashima Y, Shimomura K, Yoshida G, Kawai Y, Osawa T, Tachibana S.   +8 more
europepmc   +2 more sources

Impact-driven oxidation of organics explains chondrite shock metamorphism dichotomy [PDF]

Nature Communications
Shocked meteorites can be used to probe the dynamics of the early Solar system. Carbonaceous chondrites are less shocked than ordinary chondrites, regardless of the degree of aqueous alteration.
Kosuke Kurosawa, Gareth S. Collins, Thomas M. Davison, Takaya Okamoto, Ko Ishibashi, Takafumi Matsui   +5 more
doaj   +2 more sources

Interstellar ices as carriers of supernova material to the early solar system [PDF]

Nature Communications
Planetary materials show systematic variations in their nucleosynthetic isotope compositions that resonate with orbital distance. The origin of this pattern remains debated, limiting how these isotopic signatures can be used to trace the precursors of ...
Martin Bizzarro, Martin Schiller, Jesper Holst, Laura Bouvier, Miroslav Groen, Frédéric Moynier, Elishevah M. M. E. van Kooten, Maria Schönbächler, Troels Haugbølle, Darach Watson, Anders Johansen, James N. Connelly, Emil Bizzarro   +12 more
doaj   +2 more sources

Zhamanshin astrobleme provides evidence for carbonaceous chondrite and post-impact exchange between ejecta and Earth’s atmosphere [PDF]

Nature Communications, 2017
Identifying the original impactor from craters remains challenging. Here, the authors use chromium and oxygen isotopes to indicate that the Zhamanshin astrobleme impactor was a carbonaceous chrondrite by demonstrating that depleted 17O values are due to ...
Tomáš Magna, Karel Žák, Andreas Pack, Frédéric Moynier, Bérengère Mougel, Stefan Peters, Roman Skála, Šárka Jonášová, Jiří Mizera, Zdeněk Řanda   +9 more
doaj   +2 more sources

Meteoritic Evidence for a Ceres-sized Water-rich Carbonaceous Chondrite Parent Asteroid. [PDF]

Nat Astron, 2020
Hamilton VE, Goodrich CA, Treiman AH, Connolly HC, Zolensky ME, Shaddad MH.   +5 more
europepmc   +2 more sources

Petrography, stable isotope compositions, microRaman spectroscopy, and presolar components of Roberts Massif 04133: A reduced CV3 carbonaceous chondrite. [PDF]

Meteorit Planet Sci, 2014
Here, we report the mineralogy, petrography, C‐N‐O‐stable isotope compositions, degree of disorder of organic matter, and abundances of presolar components of the chondrite Roberts Massif (RBT) 04133 using a coordinated, multitechnique approach.
Davidson J, Schrader DL, Alexander CM, Lauretta DS, Busemann H, Franchi IA, Greenwood RC, Connolly HC, Domanik KJ, Verchovsky A.   +9 more
europepmc   +2 more sources

Earth's volatile element depletion pattern inherited from a carbonaceous chondrite-like source. [PDF]

Nat Geosci, 2019
Braukmüller N, Wombacher F, Funk C, Münker C.   +3 more
europepmc   +2 more sources

Early planetesimal differentiation and late accretion shaped Earth’s nitrogen budget [PDF]

Nature Communications
The relative roles of protoplanetary differentiation versus late accretion in establishing Earth’s life-essential volatile element inventory are being hotly debated.
Wenzhong Wang, Michael J. Walter, John P. Brodholt, Shichun Huang   +3 more
doaj   +2 more sources

The Ni isotopic composition of Ryugu reveals a common accretion region for carbonaceous chondrites. [PDF]

Sci Adv
The isotopic compositions of samples returned from Cb-type asteroid Ryugu and Ivuna-type (CI) chondrites are distinct from other carbonaceous chondrites, which has led to the suggestion that Ryugu/CI chondrites formed in a different region of the ...
Spitzer F, Kleine T, Burkhardt C, Hopp T, Yokoyama T, Abe Y, Aléon J, O'D Alexander CM, Amari S, Amelin Y, Bajo KI, Bizzarro M, Bouvier A, Carlson RW, Chaussidon M, Choi BG, Dauphas N, Davis AM, Di Rocco T, Fujiya W, Fukai R, Gautam I, Haba MK, Hibiya Y, Hidaka H, Homma H, Hoppe P, Huss GR, Ichida K, Iizuka T, Ireland TR, Ishikawa A, Itoh S, Kawasaki N, Kita NT, Kitajima K, Komatani S, Krot AN, Liu MC, Masuda Y, Morita M, Moynier F, Motomura K, Nakai I, Nagashima K, Nguyen A, Nittler L, Onose M, Pack A, Park C, Piani L, Qin L, Russell SS, Sakamoto N, Schönbächler M, Tafla L, Tang H, Terada K, Terada Y, Usui T, Wada S, Wadhwa M, Walker RJ, Yamashita K, Yin QZ, Yoneda S, Young ED, Yui H, Zhang AC, Nakamura T, Naraoka H, Noguchi T, Okazaki R, Sakamoto K, Yabuta H, Abe M, Miyazaki A, Nakato A, Nishimura M, Okada T, Yada T, Yogata K, Nakazawa S, Saiki T, Tanaka S, Terui F, Tsuda Y, Watanabe SI, Yoshikawa M, Tachibana S, Yurimoto H.   +90 more
europepmc   +3 more sources

Magnesium and ⁵⁴Cr isotope compositions of carbonaceous chondrite chondrules - Insights into early disk processes. [PDF]

Geochim Cosmochim Acta, 2016
Olsen MB, Wielandt D, Schiller M, Van Kooten EM, Bizzarro M.   +4 more
europepmc   +2 more sources