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North massif lithologies and chemical compositions viewed from 2-4 mm particles of soil sample 76503
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bishop, Kaylynn M. Haskin, Larry A. Korotev, Randy L. Jolliff, Bradley L. |
| Copyright Year | 1992 |
| Description | We identify the lithologic and compositional components of soil 76503 based on INAA of 243 2-4-mm particles and 72 thin sections from these and associated 1-2-mm particles (76502). We present a statistical distribution of the major compositional types as the first step of a detailed comparative study of the North and South Massifs. The soil sample was collected well away from any boulder and is more representative of typical North Massif material than any single large rock or boulder sample. So far, our examination of the 76503 particles has provided a better definition of precursor igneous lithologies and their petrogenetic relationships. It has enabled us to refine the nature of mixing components for the North Massif less than 1-mm fines. It has confirmed the differences in lithologies and their proportions between materials of the North and South Massifs; e.g., the North Massif is distinguished by the absence of a 72275-type KREEP component, the abundance of a highly magnesian igneous component, and the absence of certain types of melt compositions found in the South Massif samples. |
| File Size | 247142 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930009599 |
| Archival Resource Key | ark:/13960/t10p60007 |
| Language | English |
| Publisher Date | 1992-12-02 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Soil Sampling Massifs Highlands Lunar Geology Lithology Statistical Distributions Lunar Soil Chemical Composition Regolith Lunar Rocks Kreep 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 |
