Composition, Mineralogy, and Noble Gas Content of Apollo 17 Particles and Soils From the 73002 Drive Tube

IF 3.9 1区地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS

Journal of Geophysical Research: Planets Pub Date : 2025-03-12 DOI:10.1029/2024JE008329

Barbara A. Cohen, Natalie M. Curran, Sarah N. Valencia, Catherine M. Corrigan, Emma S. Bullock, Elana G. Alevy, Scott A. Eckley, the ANGSA Science Team

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Abstract

As part of the Apollo Next-Generation Sample Analysis (ANGSA) program, we provide bulk composition, mineralogy, petrology, and noble gas assays of lunar particles and soils from the top half of the 73001/2 double-drive tube (i.e., 73002) studied by the ANGSA consortium. The particles are derived from lithologies of the South Massif, including anorthosites, anorthositic breccias, high-Ti basalts, noritic impact-melt breccias, agglutinates, and regolith breccias. The impact-melt breccias are distinguished by their inclusion of high-Mg spinel that may extend the compositional family of pink spinel troctolites. The noble gas data provide cosmic-ray exposure ages representing the emplacement of the light mantle unit at 60 Ma preceded by soil exposure in an avalanche-emplaced surface around 100 Ma. These measurements provide additional insight into the geologic evolution of the Apollo 17 site and the light mantle unit sampled by the double-drive tube.

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阿波罗17号粒子和73002驱动管土壤的组成、矿物学和惰性气体含量

作为阿波罗下一代样本分析（ANGSA）计划的一部分，我们提供了由ANGSA联盟研究的73001/2双驱动管（即73002）上半部分的月球颗粒和土壤的整体成分，矿物学，岩石学和稀有气体分析。这些颗粒来自南地块的岩性，包括斜长岩、斜长角砾岩、高钛玄武岩、北岩冲击熔融角砾岩、胶结物和风化角砾岩。冲击熔体角砾岩的特征是含有高镁尖晶石，这可能扩展了粉红尖晶石橄榄岩的组成家族。稀有气体数据提供了宇宙射线暴露年龄，代表了60 Ma时轻地幔单元的就位，随后是100 Ma左右雪崩就位表面的土壤暴露。这些测量为了解阿波罗17号地点的地质演化和双驱动管取样的轻地幔单元提供了额外的见解。

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来源期刊

Journal of Geophysical Research: Planets Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

8.00

自引率

27.10%

发文量

254

期刊介绍： The Journal of Geophysical Research Planets is dedicated to the publication of new and original research in the broad field of planetary science. Manuscripts concerning planetary geology, geophysics, geochemistry, atmospheres, and dynamics are appropriate for the journal when they increase knowledge about the processes that affect Solar System objects. Manuscripts concerning other planetary systems, exoplanets or Earth are welcome when presented in a comparative planetology perspective. Studies in the field of astrobiology will be considered when they have immediate consequences for the interpretation of planetary data. JGR: Planets does not publish manuscripts that deal with future missions and instrumentation, nor those that are primarily of an engineering interest. Instrument, calibration or data processing papers may be appropriate for the journal, but only when accompanied by scientific analysis and interpretation that increases understanding of the studied object. A manuscript that describes a new method or technique would be acceptable for JGR: Planets if it contained new and relevant scientific results obtained using the method. Review articles are generally not appropriate for JGR: Planets, but they may be considered if they form an integral part of a special issue.