Physics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91....3s&link_type=abstract
(Lunar and Planetary Institute, NASA, AAS, et al., Lunar and Planetary Science Conference, 17th, Houston, TX, Mar. 17-21, 1986)
Physics
4
Impact Melts, Lunar Composition, Lunar Geology, Lunar Rocks, Petrography, Apollo 16 Flight, Chemical Composition, Crystallization, Lunar Evolution
Scientific paper
Petrographic and major-element analyses are applied to 50 Apollo 16 impact-melt splash (IMS) samples in order to determine their origin and assess the nature of the subregolith source. The macroscopic analyses reveal that the IMSs exhibit a glassy appearance, but the textures range from holohyaline to hyalopilitic. Schlieren-rich glasses dominate the holohyaline areas, and the crystalline areas are mainly spherulitic. It is observed that most IMSs contain feldspathic monomineralic and lithic clasts and no regolithic materials. It is detected that the chemistry of most IMSs is not like the local regolith and appears to represent varied mixtures of VHA impact-melt breccias and anorthosite; the host rocks are mainly dimict breccias. It is concluded that the Cayley Formation is a polymict deposit composed of VHA impact-melt breccias and anorthosites. Tables revealing the macroscopic characteristics of the IMSs and the major-element composition of IMSs and various host rock are presented.
Horz Friedrich
Morris Richard V.
See Thomas H.
No associations
LandOfFree
Apollo 16 impact-melt splashes - Petrography and major-element composition does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Apollo 16 impact-melt splashes - Petrography and major-element composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apollo 16 impact-melt splashes - Petrography and major-element composition will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1150504