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Lunar igneous rocks and the nature of the lunar interior (Document No: 19750006606)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Walker, D. Hays, J. F. |
| Copyright Year | 1974 |
| Description | Lunar igneous rocks are interpreted, which can give useful information about mineral assemblages and mineral chemistry as a function of depth in the lunar interior. Terra rocks, though intensely brecciated, reveal, in their chemistry, evidence for a magmatic history. Partial melting of feldspathic lunar crustal material occurred in the interval 4.6 to 3.9 gy. Melting of ilmenite-bearing cumulates at depths near 100 km produced parent magmas for Apollo 11 and 17 titaniferous mare basalts in the interval 3.8 to 3.6 gy. Melting of ilmenite-free olivine pyroxenites at depths greater than 200 km produced low-titanium mare basalts in the interval 3.4 to 3.1 gy. No younger igneous rocks have yet been recognized among the lunar samples and present-day melting seems to be limited to depths greater than 1000 km. |
| File Size | 731782 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750006606 |
| Archival Resource Key | ark:/13960/t47q3rq7b |
| Language | English |
| Publisher Date | 1974-07-30 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Chemical Analysis Lunar Geology Lunar Crust Igneous Rocks Lunar Landing Sites Minerals Lunar Surface Lunar Rocks Lunar Magnetic Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
