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Constraints on the formation of the terrestrial planets from experimental geochemistry
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Drake, Michael J. |
| Copyright Year | 1990 |
| Description | The abundances of V, Cr, and Mn in the mantles of the Earth and Moon are very similar, and are distinct from all other sampled solar system bodies. This similarity has led to the suggestion that there is a genetic relationship between the Earth and Moon, more specifically, that the Moon was derived from the mantle of the Earth after formation of the core. This proposal is at odds with the Giant Impact paradigm of lunar origin and our current understanding of the formation of the terrestrial planets. During the award period, some of the necessary experimental procedures were developed. Specifically, an assembly design has been developed to permit heating of metal by insulating it from highly conducting diamond. A Nd-YAG laser was assembled, aligned and tested. The technique for preparation of the run products for electron microprobe analysis was developed, and an alternative approach has been identified. A scheme to carry out polybaric experiments on a single charge was developed. The experiments carried out did not lead to conclusive results, and the arguments advanced by Drake et aL (1989) and Drake (1990) remain the best summary of the status of the problem. |
| File Size | 39190 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980025537 |
| Archival Resource Key | ark:/13960/t3jx38p7p |
| Language | English |
| Publisher Date | 1990-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Terrestrial Planets Lunar Evolution Lunar Geology Lunar Crust Moon Earth Mantle Yag Lasers Vanadium Geochemistry Abundance Earth Sciences Planetary Evolution Chromium Manganese 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 |
