منابع مشابه
Lunar Crustal History from Isotopic Studies of Lunar Anorthosites
Anorthosites occur ubiquitously within the lunar crust at depths of 3-30 km in apparent confirmation of the Lunar Magma Ocean (LMO) hypothesis [1,5]. We will present recent chronological studies of anorthosites [2] that are relevant both to the LMO hypothesis and also to the lunar cataclysm hypothesis. Old (ca. 4.4 Ga) Sm-Nd ages have been determined for some Apollo 16 anorthosites, and primiti...
متن کاملIsotopic variability of nitrogen in lunar regolith.
Hashizume et al. (1) claim that the distribution and isotopic composition of nitrogen in the lunar regolith can be explained by a two-component mixing model. Their report, however, fails to discuss the bulk of existing relevant data— data that show unequivocally that the conclusions in (1) cannot be correct. Although the data, derived by several different groups on many different samples using ...
متن کاملThe Composition of the Lunar Surface Relative to Lunar Samples
Introduction: The non-mare pristine samples are divided into two major suites, the ferroan anorthosites (FAN) and the Mg-suite [1]. FAN is typically characterized by high values of plagiophile interelement ratios, for example, the calcium content of plagioclase, and very high plagioclase content (though more mafic members exist). FAN is well separated from the Mgsuite on a plot of Mg-number vs....
متن کاملOrganics in Apollo Lunar Samples
Introduction: One of many unknowns prior to the Apollo landings concerned the possibility of life, its remains, or its organic precursors on the surface of the Moon. While the existence of lunar organisms was considered highly unlikely, a program of biological quarantine and testing for the astronauts, the Apollo Command Modules, and the lunar rock and soil samples , was instituted in the Lunar...
متن کاملFormation times of Meteorites and Lunar Samples
Atopic abundances and the reso lu t ion of small t ime differ ences in the formation of p lane ta ry objects, Earth Planet. Sci Lett., 5, 3 6 1 3 7 6 , 1 9 6 9 . fmn R ®-> Heavy rare gases in silicates f rom t h e Esterville lesosiderite,X Geophys. Res., 71, 2 8 1 5 2 8 2 9 , 1966 . toin R. 0 . , Trapped neon in meteor i t e s , Earth Planet. Sci ' letl 1 1 3 1 8 , 1967 . Pepin R 0 . , and P. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Mass Spectrometry Society of Japan
سال: 1970
ISSN: 1340-8097,1880-4225,1884-3271
DOI: 10.5702/massspec1953.18.866