In particular we studied the meteorite Angra dos Reis (ADR), an augite achondrite, which is known to have a high uranium concentration (> 170 p.p.b. by weight) 7–9 and for which the concentrations 10–12 of rare gases, both fissiogenic and cosmogenic, are well known. ADR is rich...
THIS unique olivine-clinopyroxenite meteorite (angrite) has been intensively studied first because it contains evidence of the existence of extinct radionuclidesand second because it is the meteorite richest in Ti and Ca and is therefore most similar to lunar rocks. In addition, it has been ...
Cite this article Ludwig, E., Tschermak, G. Nachtrag zu der Mitteilung über den Meteoriten von Angra dos Reis.Mineralog. und petrogr. Mitt.28, 110–114 (1909). https://doi.org/10.1007/BF02996008 Download citation Issue DateJanuary 1909 DOIhttps://doi.org/10.1007/BF02996008...
Xenon spallation systematics in Angra dos Reis Literature Xe data for the Angra dos Reis meteorite has been resolved into constituent spallation, fission and trapped components. The spallation Xe compos... CM Hohenberg,B Hudson,BM Kennedy,... - 《Geochimica Et Cosmochimica Acta》 被引量: 156发表...
exposure to cosmic rays increased the ratio 150Sm/ 149Sm in Angra dos Reis by 6 parts in 10 4.doi:10.1016/0012-821X(77)90131-5G.W. LugmairK. MartiElsevier B.V.Earth and Planetary Science LettersLugmair, GW, Marti, K (1977) Sm-Nd-Pu timepieces in the Angra dos reis meteorite. ...
Angra dos Reis meteoriteachondrite/ A9650M Meteorites, micrometeoritesThe preatmospheric mass of Angra dos Reis is estimated to be about 80 kg, based on cosmic ray track densities of 13 脳 10 6 cm 2 in feldspars, olivines, and pyroxenes. The 244Pu-fission track densities in pyroxenes ...
Literature Xe data for the Angra dos Reis meteorite has been resolved into constituent spallation, fission and trapped components. The spallation Xe compos... CM Hohenberg,B Hudson,BM Kennedy,... - 《Geochimica Et Cosmochimica Acta》 被引量: 156发表: 1981年 Laboratory diagnosis of keratomycosis...
Xenon released in stepwise heating of the Angra dos Reis stone is found to be largely cosmogenic (from cosmic ray spallation reactions) and fissiogenic (presumably from the spontaneous fission of 82 million year Pu 244). This meteorite contains the largest proportion of these two components ...
Mao, HK, Bell, PM, Virgo, D (1977) Crystal field spectra of fassaite from the Angra dos Reis meteorite. Earth Planet. Sci. Lett. 35: pp. 353-356Mao H. K., Bell P. M., and Virgo D. 1977. Crystal-field spectra of fassaite from the Angra dos Reis meteorite. Earth and ...
We have resolved literature Xe data for the Angra dos Reis meteorite into constituent spallation, fission and trapped components. The spallation Xe compositions vary over a range wider than observed in any other samples, including lunear samples. These variations are due to the mixing of spallation...