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The evolution of the moon and the terrestrial planets (Document No: 19750006618)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Toksoez, M. N. Johnston, D. H. |
| Copyright Year | 1974 |
| Description | The thermal evolutions of the Moon, Mars, Venus and Mercury are calculated theoretically starting from cosmochemical condensation models. An assortment of geological, geochemical and geophysical data are used to constrain both the present day temperatures and the thermal histories of the planets' interiors. Such data imply that the planets were heated during or shortly after formation and that all the terrestrial planets started their differentiations early in their history. The moon, smallest in size, is characterized as a differentiated body with a crust, a thick solid mantle and an interior region which may be partially molten. Mars, intermediate in size, is assumed to have differentiated an Fe-FeS core. Venus is characterized as a planet not unlike the earth in many respects. Core formation has occurred probably during the first billion years after the formation. Mercury, which probably has a large core, may have a 500 km thick solid lithosphere and a partially molten core if it is assumed that some heat sources exist in the core. |
| File Size | 3205069 |
| Page Count | 115 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750006618 |
| Archival Resource Key | ark:/13960/t01z8zv6g |
| Language | English |
| Publisher Date | 1974-04-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Venus Planet Lunar Evolution Lunar Crust Moon Planetary Evolution Astronomical Models Mercury Planet Mars Planet Cosmology Earth Planet Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
