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Troctolitic anorthosite from 77115: a magnesian member of the alkalic suite
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kallemeyn, Gregory W. Warren, Paul H. |
| Copyright Year | 1992 |
| Description | Alkalic suite pristine nonmare rocks are distinctly enriched in plagiophile elements such as Na and K, as well as generally incompatible elements, despite modes and textures more characteristic of typical crustal cumulates (most commonly anorthosites) than of the basaltic KREEP rocks that appear to account for the bulk of the lunar crust's total complement of incompatible elements. Our studies indicate that the 77115 troctolitic clasts of Winzer et al. is actually a troctolitic anorthosite (or anorthositic troctolite), probably best classified as a member of the alkalic suite. We managed to obtain a thin section with pyroxene and olivine, and analyzed a 13.4-mg chip by instrumental neutron activation analysis (INAA). The results of this analysis are briefly discussed. |
| File Size | 141228 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930009627 |
| Archival Resource Key | ark:/13960/t4gn3424d |
| Language | English |
| Publisher Date | 1992-12-02 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Olivine Petrology Pyroxenes Neutron Activation Analysis Lunar Geology Lunar Crust Lithology Chemical Composition Breccia Anorthosite Lunar Rocks Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
