Loading...
Please wait, while we are loading the content...
Similar Documents
Basaltic clasts in y-86032 feldspathic lunar meteorite: ancient volcanism far from the procellarum kreep terrane
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nyquist, L. E. Takeda, H. Ebihara, M. Bogard, D. Yamaguchi, A. Karouji, Y. |
| Copyright Year | 2008 |
| Description | Lunar meteorite, Y-86032 is a fragmental or regolith breccia enriched in Al2O3 (28-31 wt%) and having very low concentrations of REEs and Th, U [e.g., 1]. Nyquist et al. [2] suggested that Y- 86032 contains a variety of lithologies not represented by the Apollo samples. They found clasts with old Ar-Ar ages and an ancient Sm-Nd age, and negative Nd indicating a direct link to the primordial magma ocean. Importantly, the final lithification of the Y-86032 breccia was likely >3.8-4.1 Ga ago. Therefore, any lithic components in the breccia formed prior to 3.8 Ga, and lithic components in breccia clasts in the parent breccia formed even earlier. Here we report textures and mineralogy of basaltic and gabbroic clasts in Y- 86032 to better understand the nature of ancient lunar volcanism far from the Procellarum KREEP Terrain (PKT) [3] and the central nearside. |
| File Size | 280019 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080013483 |
| Archival Resource Key | ark:/13960/t53f9qx2r |
| Language | English |
| Publisher Date | 2008-03-10 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Low Concentrations Mineralogy Regolith Breccia Magma Lunar Maria Meteorites Terrain Lithology Volcanology Basalt Metamorphism Geology Aluminum Oxides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
