Pre-Imbrian craters and basins - Ages, compositions and excavation depths of Apollo 16 breccias

Details Pre-Imbrian craters and basins - Ages, compositions and excavation depths of Apollo 16 breccias Pre-Imbrian craters and basins - Ages, compositions and excavation depths of Apollo 16 breccias

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978gecoa..42.1687m&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 42, Nov. 1978, p. 1687-1720. Research supported by the Swiss National Science Foundation

Mathematics

Logic

19

Apollo 16 Flight, Breccia, Lunar Composition, Lunar Craters, Lunar Evolution, Structural Basins, Argon Isotopes, Lunar Rocks, Radioactive Age Determination, Tables (Data), Samples, Lunar, Basins, Apollo 16, Craters, Petrology, Ages, Exposure Ages, Breccias, Trace Elements, Fragments, 63503, 67603, 67703, Kreep, Anorthosites, Textures, Aluminum, Isotopic Ratios, Potassium, Lanthanum, Mineralogy, Rare Earth Elements, Data, X-Ray Analysis, Melts, Chemical Composition, Metamorphism, Pre-Imbrian, Imbrian, Basin

Scientific paper

Small brecciated fragments selected from three Apollo 16 soil samples are analyzed in order to determine the (Ar-39)-(Ar-40) dates at which the breccia-forming cratering events occurred and also to examine petrologically the textural and compositional properties of each dated fragment. It is found that certain anorthositic breccias have ages in excess of 4.1 AE, indicating cratering within the lunar highlands earlier than the 'cataclysmic' stage of about 3.9 AE, that a group of glassy rocks with occasional devitrification areas and lithic fragments is younger than 2.5 AE, and that the youngest group of ages conforms with the more generalized interpretation of those cratering events that occurred around 3.9 to 4.0 AE ago. The relative ages of the Imbrium, Nectaris, and Serenitatis basins are considered in light of the data.

Affiliated with

Also associated with

No associations

Rating

Pre-Imbrian craters and basins - Ages, compositions and excavation depths of Apollo 16 breccias 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 Pre-Imbrian craters and basins - Ages, compositions and excavation depths of Apollo 16 breccias, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pre-Imbrian craters and basins - Ages, compositions and excavation depths of Apollo 16 breccias will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1067210