Identifying primitive noble gas components in lunar ferroan anorthosites
نویسندگان
چکیده
منابع مشابه
Melt Migration in the Early Lunar Crust: Formation of the Primitive, Pure Lunar Ferroan
Introduction: Over the years, there have been many proposed mechanisms for moon formation, including fission, capture, and coaccretion, but the most popular and ever-evolving model at present is the giant impact origin [1]. The impact origin points to the existence of a hot, young moon, likely with a global magma ocean [2]. The next logical step, based on the mantle cumulate crystallization seq...
متن کاملStepwise heating of lunar anorthosites 60025, 60215, 65315 possibly reveals an indigenous noble gas component on the Moon
Despite extensive effort during the last four decades, no clear signature of a lunar indigenous noble gas component has been found. In order to further investigate the possible occurrence of indigenous volatiles in the Moon, we have reanalyzed the noble gas and nitrogen isotopic compositions in three anorthosite samples. Lunar anorthosites 60025, 60215 and 65315 have the lowest exposure duratio...
متن کاملLunar Spinel Anorthosites : Updated Constraints from Enthalpy
A. H. Treiman, J. Gross, M. J. Kulis, and A. F. Glazner. Lunar and Planetary Institute, 3600 Bay Area Blvd., Houston TX 77058 [email protected]. Department of Earth and Planetary Sciences, Rutgers University, 610 Taylor Rd., Piscataway NJ 08854, [email protected]. Extreme Environments Laboratory, NASA Glenn Research Center, 2100 Brookpark Road Cleveland, OH 44135, [email protected]...
متن کاملLunar 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 کامل“massif’ Anorthosites in Alha81005: Possible Origin from a Diapir?
Introduction: Ferroan anorthosite is a dominant rock type in the lunar highland crust. Currently it is thought that the crust was formed by the crystallization and flotation of plagioclase from a global magma ocean [1,2]. This hypothesis of the lunar crust formation was made based on numerous analyses of Apollo and Luna lunar samples of ferroan anorthosites. Nevertheless these samples are now k...
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ژورنال
عنوان ژورنال: Icarus
سال: 2020
ISSN: 0019-1035
DOI: 10.1016/j.icarus.2020.113977