Chapter 9: Theory and processes relating to the lunar maria from the surveyor experiments
Prior to the Surveyor missions, there were three principal theories about the chemical constitution of the lunar maria: that the maria were (1) chondritic, (2) basaltic, or (3) silicic. Three types of materials recovered on Earth were suspected of coming from the maria: (1) chondritic meteorites, (2) basaltic achondrites, and (3) tektites.
The Surveyor chemists have now spoken: Turkevich, Franzgrote, and Patterson find that, in Mare Tranquillitatis (ref. 9-1) and Sinus Medii (see ch. 7 of this report), the composition is basaltic. It is unmistakably too poor in magnesium to be like either kind of chondritic meteorite. It is too rich in the heavier elements, iron and calcium, to resemble terrestrial silicic rocks (the granitic kindred) or tektites.
|Publication type||Book chapter|
|Publication Subtype||Book Chapter|
|Title||Chapter 9: Theory and processes relating to the lunar maria from the surveyor experiments|
|Publisher||National Aeronautics and Space Administration|
|Description||NASA SP-166, 5 p.|
|Larger Work Type||Report|
|Larger Work Subtype||Federal Government Series|
|Larger Work Title||Surveyor VI: A preliminary report|
|Other Geospatial||Lunar maria, Moon|
|Google Analytic Metrics||Metrics page|